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Class Information
Number: 73
Name: Measuring and testing >
Description: (1) This is the generic class for processes and apparatus for making a measurement of any kind or for making a test of any kind, and takes all such subject matter not provided for in other classes.










Class Number Class Name No. of Patents
73/865.4

Analyzing bodily movement (e.g., skills or kinetics of handwriting)

96
73/900

Automatic gain control

31
73/384

Barometer (e.g., altimeter)

90
73/386

Aneroid

29
73/387

Settable

24
73/385

Mercury

1
73/168

Blower, pump, and hydraulic equipment

416
73/152.01

Borehole or drilling (e.g., drill loading factor, drilling rate, rate of fluid flow)

140
73/152.54

Downhole test

136
73/152.59

By measurement of response due to force

112
73/152.57

Casing or cementing

49
73/152.55

Fluid test

124
73/152.56

Free point or stuck point

38
73/152.58

Using vibration

82
73/152.43

During drilling

79
73/152.46

Downhole measurement

140
73/152.48

Force

44
73/152.47

Vibration

61
73/152.44

Drill depth rate

22
73/152.45

Electronic processing or electronic recording

44
73/152.49

Force

55
73/152.18

Fluid flow measuring or fluid analysis

198
73/152.42

Determining relative proportion of fluid constituent

98
73/152.19

During drilling

84
73/152.22

Pressure

59
73/152.21

Rate of fluid flow

49
73/152.39

Fluid injection into formation

94
73/152.41

Determining permeability or saturation

70
73/152.29

Rate of fluid flow

91
73/152.36

Packer or deflector detail

29
73/152.31

Plural diverse measuring

83
73/152.34

Rotary

8
73/152.35

Magnetic

11
73/152.33

Thermal

26
73/152.32

Vibration

29
73/152.37

Steady state fluid flow interruption

12
73/152.38

Drawdown or shutin test

38
73/152.23

With sampling

108
73/152.28

Downhole

73
73/152.24

From formation wall

91
73/152.25

With a filter

27
73/152.26

With sealing detail

71
73/152.27

Pressure

40
73/152.02

Formation logging (e.g., borehole studies of pressure derivatives or of pressure-temperature derivatives)

181
73/152.11

By a core sample analysis

91
73/152.05

Density, porosity, or permeability

154
73/152.07

By a core sample analysis

33
73/152.06

Including oil, gas, or water saturation

48
73/152.03

During drilling

113
73/152.04

By drill mud analysis

54
73/152.08

Oil, gas, or water saturation

41
73/152.09

By a core sample analysis

31
73/152.12

Thermal

55
73/152.13

With heating or cooling

29
73/152.17

With detail of a borehole wall engaging means

76
73/152.14

With radioactivity measuring

72
73/152.15

With vibration measuring

26
73/152.16

With vibration measuring

70
73/152.51

Pressure measurement

188
73/152.52

Plural diverse measurements

148
73/152.53

With recorder

40
73/152.61

Pump test

45
73/152.62

With recorder

18
73/121

Brake testing

194
73/132

Brake depressor with measuring means

56
73/128

Road test attachment or adjunct

11
73/123

Roller or belt wheel support

37
73/125

Inertia type

5
73/124

Relatively shiftable front and rear wheel supports

2
73/126

With driving effort indication

30
73/127

Single wheel portable unit

3
73/130

Single wheel rotating and resistance measuring means

5
73/131

Torque measuring lever

3
73/122

Slidable platform

13
73/129

Vehicle installation

120
73/7

By abrasion, milling, rubbing, or scuffing

250
73/8

Wheel tread, tire, track, or roadway

79
73/65.01

Center of gravity; turning moment; metacentric height

63
73/65.05

Air or space vehicle

13
73/65.06

Electric sensor

24
73/65.03

Ball driving sporting implement (e.g., golf club, baseball bat, etc.)

84
73/65.07

Dynamic

28
73/65.08

Torsional oscillation

4
73/65.09

Electric sensor

17
73/65.02

Spherical specimen

11
73/65.04

Watercraft (e.g., metacentric height)

6
73/150R

Coating material: ink adhesive and/or plastic

155
73/150A

Bond strength

168
73/163

Coin

45
73/901

Digital readout

14
73/866.3

Display or display device details

111
73/87

Ductility or brittleness

28
73/862

Dynamometers

116
73/862.01

For testing force-biased connections

40
73/862.02

Ski bindings

10
73/862.03

For testing relative pulling power (e.g., for contests)

9
73/862.381

Responsive to force

159
73/862.61

By measuring a counterbalancing or restoring force

47
73/862.581

By measuring a fluid pressure

58
73/862.582

Using a load responsive valve or restrictor

11
73/862.583

Pneumatic

8
73/862.584

Using a piston

28
73/862.621

By measuring elastic deformation

87
73/862.636

Specific type of elastic member

52
73/862.642

Closed loop (e.g., ring or tube)

32
73/862.637

Flexible element (e.g., beam, plate, or web)

79
73/862.639

Cantilever

80
73/862.638

Parallel

42
73/862.641

Helical or spiral

17
73/862.624

Using a light sensor

48
73/862.625

Using a specific type of electrical sensor

91
73/862.626

Inductance or capacitance sensor

158
73/862.627

Resistance strain gage

151
73/862.628

Including a specific type of electrical circuit

121
73/862.629

Specific type of elastic member

77
73/862.631

Axle or pivot pin

35
73/862.635

Closed loop (e.g., ring or tube)

55
73/862.632

Flexible element (e.g., beam, plate, or web)

162
73/862.634

Cantilever

170
73/862.633

Parallel

99
73/862.622

With compensation

86
73/862.623

Temperature

73
73/862.68

By measuring electrical properties

169
73/862.69

By measuring magnetic properties

116
73/862.59

By measuring vibrations (e.g., resonant frequency)

197
73/862.541

Combined

174
73/862.56

With hoisting means

62
73/862.542

With jack or press

34
73/862.55

With pressure applying roller (e.g., mill roll)

72
73/862.543

With pumping unit

8
73/862.57

With towing means

42
73/862.49

To determine axial thrust on a rotating machine element

85
73/862.391

To determine tension on a flexible element

205
73/862.42

By applying a measured tensioning force

40
73/862.43

Racket stringing

13
73/862.44

With winding or reeling means

33
73/862.392

By measuring axial force or stretch

75
73/862.393

Pulling force on an anchoring device

70
73/862.451

By measuring deflection or a deflecting force

84
73/862.453

For testing a drive belt

27
73/862.452

For testing racket stringing

15
73/862.454

Using a fluid for deflection or force measuring

26
73/862.471

Using an elastically deformable force measuring means

58
73/862.473

Electrical sensor

46
73/862.474

Resistance strain gage

134
73/862.472

With pivoted deflecting member between spaced guides or supports

20
73/862.46

With angular deflection

26
73/862.41

By measuring vibrations (e.g., resonant frequency)

82
73/862.382

With detail of overload protection

66
73/862.53

With detection of specific force value or condition (e.g., peak force)

117
73/862.51

With recording means

25
73/862.52

With variable capacity or sensitivity

40
73/862.041

Responsive to multiple loads or load components

244
73/862.042

Along or about mutually orthogonal axes

88
73/862.043

Three dimensional (e.g., x, y, z axes)

132
73/862.044

Using a resistance strain gage

141
73/862.05

Applied to guidance means

36
73/862.06

On machine tools

50
73/862.07

To determine distribution of tensile stress

40
73/862.046

Transducer array (e.g., columns and rows)

199
73/862.045

Using a resistance strain gage

138
73/862.08

Responsive to torque

198
73/862.09

By absorption

41
73/862.14

Having fluid brake means

21
73/862.15

Air brakes

6
73/862.16

Automatic load control

10
73/862.12

Having friction brake means

25
73/862.13

Automatic load control

4
73/862.17

Having magnetic or electromagnetic brake means

24
73/862.18

Automatic load control

22
73/862.11

Having plural brake means

5
73/862.191

During transmission to an external load

105
73/862.195

By converting transmitted torque into axial force

19
73/862.193

By measuring an electrical or magnetic characteristic of a torque delivering electric motor

60
73/862.192

By measuring angular acceleration

17
73/862.321

By measuring elastic deformation of a torque transmitting member

92
73/862.323

Using a flowing fluid (e.g., using a shaft mounted nozzle and baffle)

6
73/862.324

Using a light sensor

74
73/862.325

Using an electrical sensor

139
73/862.337

Capacitance sensor

27
73/862.331

Inductance or reluctance sensor

221
73/862.333

Detecting magnetostrictive or magnetoelastic property

268
73/862.334

Grooved or slotted torsion shaft

64
73/862.335

Magnetic sleeve or layer

141
73/862.336

Particular constituent

63
73/862.332

Variable air gap in a magnetic core

40
73/862.326

Phase angle detection

112
73/862.328

By plural toothed or notched sensing means

71
73/862.329

Interlaced teeth

18
73/862.327

Vernier type

5
73/862.338

Resistance strain gage

72
73/862.339

With noncontact coupling (e.g., rotary transformer)

25
73/862.322

With rotary to linear conversion

84
73/862.29

By measuring reaction forces of a prime mover

37
73/862.31

By measuring reaction forces of transmission gearing

64
73/862.194

By measuring tension in a drive belt or chain

14
73/862.37

By measuring the fluid pressure of a hydraulic coupling

9
73/862.21

For making or breaking threaded connections (e.g., torque measuring wrenches)

169
73/862.26

Bending beam type

29
73/862.25

Power tongs

31
73/862.23

With detection of specific torque value or condition (e.g., peak torque)

238
73/862.24

Rate of change

23
73/862.22

With variable capacity or sensitivity

42
73/862.28

With electrical computation of horsepower

38
73/862.27

With recording or totalizing means

22
73/86

Embrittlement or erosion

219
73/35.01

Engine detonation (e.g., knock)

69
73/35.06

Combustion signal compared to a fixed reference signal or utilizing a threshold value

49
73/35.03

Combustion signal compared to reference signal varied by a condition of the engine

98
73/35.05

Automatic gain control or feedback control

59
73/35.04

Including calculation means

75
73/35.02

Fuel rating (e.g., octane rating)

64
73/35.07

Specific type of detonation sensor

56
73/35.08

Ionization

150
73/35.12

Pressure

59
73/35.13

Piezoelectric

41
73/35.09

Vibration

101
73/35.11

Piezoelectric

113
73/35.14

Explosive

48
73/35.15

By time measurement (e.g., burning rate, detonation velocity)

22
73/35.16

Electric sensor

20
73/35.17

Safety feature or containment structure

24
73/169

Flour, dough, or bread

29
73/DIG.8

Fluid circuits

9
73/170.01

Fluid flow direction (e.g., wind sock, weather vane, etc.)

104
73/170.02

Relative to aircraft or watercraft

134
73/170.03

Sailboat (e.g., sailing aid)

40
73/170.04

Using a drifter or tracer (e.g., smoke)

27
73/170.05

Using a fluid actuated alignment device (e.g., wind sock, weather vane, etc.)

63
73/170.09

Electric sensor

15
73/170.06

With illumination means or an electro-optical indicator (e.g., beacon or signal lamp)

31
73/170.07

With velocity determination

50
73/170.08

Electric sensor

30
73/170.11

With velocity determination

89
73/170.13

Acoustic

82
73/170.14

Fluid pressure differential

29
73/170.12

Thermal

46
73/170.15

Thrust or drag force

49
73/700

Fluid pressure gauge

302
73/751

Balance

5
73/732

Bourdon

73
73/741

Bourdon tube and mounting

69
73/742

Helical bourdon tube

15
73/743

Spiral bourdon tube

19
73/737

Intermediately supported

2
73/736

Multiple and/or differential

76
73/738

Safety pressure release casing

23
73/733

With electrical readout

28
73/735

Electromagnetic

24
73/734

Resistive

16
73/739

With mechanism dampening

12
73/740

With zeroizing adjustment

23
73/714

Combined

330
73/715

Diaphragm

692
73/729.1

Bellows

86
73/729.2

Capsule

68
73/730

Expansible conduit

118
73/716

Multiple and/or differential

299
73/717

With electrical readout

169
73/718

Capacitive

601
73/722

Electromagnetic

101
73/719

Resistive

64
73/720

Strain gauge

185
73/721

Piezoresistive

389
73/731

Sack

32
73/723

With electrical readout

227
73/724

Capacitive

542
73/728

Electromagnetic

127
73/725

Resistive

81
73/726

Strain gauge

221
73/727

Piezoresistive

481
73/753

Electrical

340
73/755

Pirani type

51
73/754

Semiconductor

413
73/752

Mcleod type

2
73/756

Mounting and connection

874
73/701

Null balance type

52
73/705

Photoelectric

304
73/744

Piston

163
73/745

With electrical readout

82
73/746

Resistive

28
73/747

U-tube liquid column

39
73/748

Sphygmomanometer

10
73/749

With electrical readout

35
73/750

Resistive

1
73/702

Vibration type

177
73/703

Ultrasonic

70
73/704

Vibrating strip or wire

74
73/709

With excess or maximum registering

36
73/713

With float

8
73/707

With fluid pulsation dampener

42
73/708

With pressure and/or temperature compensation

548
73/706

With protective separator

464
73/712

With recorder

16
73/710

With steam trap

1
73/711

With variable drive

11
73/9

Frictional resistance, coefficient or characteristics

315
73/10

Lubricant testing

93
73/23.2

Gas analysis

979
73/31.01

Ambient air

135
73/31.02

Impurity

208
73/23.3

Breath analysis

270
73/25.01

By thermal property

148
73/25.05

Detector detail

66
73/25.04

Moisture content or vapor pressure

52
73/25.03

Thermoconductivity

146
73/25.02

With magnetic property (e.g., paramagnetic gas)

38
73/24.01

By vibration

260
73/24.05

Density or specific gravity of gas

50
73/24.06

Detector detail

260
73/24.04

Moisture content or vapor pressure of gas

48
73/24.02

Produced by radiant energy

112
73/24.03

Solid content of gas

49
73/30.01

Density or specific gravity

46
73/30.02

By pressure measurement

27
73/30.03

By rate of flow

15
73/30.04

Detector detail

41
73/31.05

Detector detail

728
73/31.06

Semiconductor

389
73/23.35

Gas chromatography

320
73/23.39

Column detail

116
73/23.42

Detail of gas handling means

264
73/23.4

Detector detail

130
73/23.41

Including sample preparation or sampling

320
73/23.38

Petrochemical

35
73/23.36

With electrical computer or data processor control

125
73/23.37

With spectrometer

102
73/23.31

Gas of combustion

854
73/23.32

Air-fuel ratio

393
73/23.33

Solid content

74
73/31.03

Impurity

179
73/29.01

Moisture content or vapor pressure

291
73/29.05

Detector detail

96
73/29.02

Hygrometer

99
73/335.11

Expanding-sorption element

6
73/335.13

Arcuate or elongated

4
73/335.12

Coiled or twisted

1
73/335.14

Tensioned

7
73/335.06

Wet and dry responsive elements

22
73/335.08

Wet bulb detail

21
73/335.09

Relative air motion creating means (e.g., sling psychrometer)

4
73/335.07

With direct readout or calculator detail

4
73/335.02

With electric circuitry or electric circuit component detail

141
73/335.03

Impedance

44
73/335.04

Capacitance

110
73/335.05

Resistance or conductivity

143
73/335.01

With optical element

57
73/29.03

Pressure

28
73/29.04

With visual indication

35
73/23.34

Odor

147
73/31.07

Particular separator

129
73/31.04

Pressure

86
73/28.01

Solid content of gas

309
73/28.02

Particle charging

74
73/28.03

Pressure

19
73/28.04

Separator detail

131
73/28.05

Impactor

88
73/28.06

Fractionalizing

13
73/23.21

With compensation detail (for error or drift correction, etc.)

159
73/23.28

For density or specific gravity

16
73/23.29

Pressure

11
73/23.22

For gas chromatography

60
73/23.23

Baseline drift correction circuitry

41
73/23.27

Pressure

38
73/23.24

Rate of flow

28
73/23.25

Temperature

80
73/23.26

Gradient

10
73/19.01

Gas content of a liquid or a solid

175
73/19.02

By gas chromatography

83
73/19.05

By pressure of the gas

93
73/19.06

Of a beverage

26
73/19.04

By rate of flow of the gas

23
73/19.03

By vibration

132
73/19.1

Of a liquid

233
73/19.11

Lubricant

37
73/19.08

Of concrete, mortar, or plastic while in a fluent state

9
73/19.07

Of metal

62
73/19.09

Of mud

29
73/19.12

Particular separator

54
73/382R

Gravitational determination

109
73/382G

Gravitational variation

95
73/383

Torsion balance

6
73/DIG.3

Hall effect

55
73/78

Hardness

116
73/81

By penetrator or indentor

276
73/82

Impact type

108
73/85

Penetrator element

49
73/84

Soil bearing capacity

123
73/83

With successive minor and major load

45
73/79

Scleroscope or rebound

27
73/158

Hoisting cable and rope

32
73/865.1

Human stress limit (e.g., decompression gauge for divers)

62
73/865.2

Hydraulic altimeter

21
73/36

Illuminating fluid

27
73/865.8

Inspecting

764
73/431

Instrument casing

414
73/430

Instrument mechanism dampening

53
73/866.1

Instrument mechanism or transmission

125
73/866.2

Rate of change

13
73/DIG.10

Instrument mechanisms with acceleration compensation

11
73/1.01

Instrument proving or calibrating

352
73/1.75

Angle, direction, or inclination

141
73/1.78

Aircraft, inertial navigation, or attitude

41
73/1.76

Compass

43
73/1.77

Gyroscope

86
73/1.82

Apparatus for measuring by use of vibration or apparatus for measuring vibration (e.g., acoustic or ultrasonic)

256
73/1.83

Liquid

79
73/1.86

Reference standard detail

108
73/1.84

Rotary or rotor unbalance

27
73/1.85

Seismic (e.g., geophone) or with optical sensor

40
73/1.87

Centrifuge

10
73/1.79

Displacement, motion, distance, or position

308
73/1.81

Length, width, or height

116
73/1.08

Dynamometer

52
73/1.15

Load cell (e.g., strain gauge or piezoelectric sensor)

119
73/1.14

Rotor unbalance or a roller having a smooth surface

30
73/1.09

Torque

35
73/1.11

Electrical

37
73/1.12

Wrench

22
73/1.13

Weight

193
73/1.57

Fluid pressure

96
73/1.65

Dead weight type

9
73/1.71

Pressure activated device

43
73/1.72

Valve

84
73/1.69

Using or containing liquid

18
73/1.58

Vacuum

35
73/1.66

Varying

21
73/1.67

Using or containing liquid

8
73/1.68

With piston and cylinder

43
73/1.59

With signal correction or processing

80
73/1.61

Span

49
73/1.63

With reference source or attachment therefor

32
73/1.64

Varying

21
73/1.62

Zero

52
73/1.02

Gas or liquid analyzer

345
73/1.06

Gas

333
73/1.07

Span or zero

94
73/1.03

Reference standard

164
73/1.04

Permeable outlet or flawed element

42
73/1.05

Piston, sprayer, nozzle, or orifice

82
73/1.73

Liquid level or volume measuring apparatus

192
73/1.74

Volumetric dispenser (e.g., pipette)

92
73/1.89

Roughness or hardness

57
73/1.88

Span or set point adjustment (e.g., zero correction)

127
73/1.37

Speed, velocity, or acceleration

202
73/1.38

Acceleration utilizing an inertial element

204
73/1.39

Involving pendulum or impact

36
73/1.41

Optical or magnetic sensing

29
73/1.42

Timing apparatus (e.g., fuse, camera, or shutter)

25
73/1.43

Chronometer (e.g., clock, watch, or watch unbalance)

11
73/1.52

Plural watches

1
73/1.44

Using antenna or radio frequency (rf)

7
73/1.45

Using optical sensor or element

19
73/1.47

Resilient element

0
73/1.46

With sound sensor

3
73/1.48

Using sound sensor or piezoelectric vibration sensor

17
73/1.49

Plural watches or plural sensors

5
73/1.51

Resilient element

0
73/1.53

With resilient element

0
73/1.54

Coil spring

0
73/1.55

Plural coil springs

0
73/1.56

Optical instrument (e.g., camera shutter) or optical sensor

18
73/1.16

Volume of flow, speed of flow, volume rate of flow, or mass rate of flow

166
73/1.29

Anemometer or pitot tube

17
73/1.36

Metering dispenser

92
73/1.25

Orifice or restriction

44
73/1.26

Nozzle or venturi

37
73/1.19

Piston

41
73/1.22

With magnetic or optical sensor

27
73/1.21

With plural pistons

12
73/1.23

With position sensing switch

19
73/1.17

Plug with leak detector

24
73/1.18

Sphere

21
73/1.24

Tracer

12
73/1.27

Turbine, geared meter, pulse activated, or counter

37
73/1.28

Turbine or geared meter

25
73/1.33

With floating element or weighing

16
73/1.31

With liquid level monitor or timer

30
73/1.32

Prover bell

9
73/1.35

With pressure measurement or plural flowmeters

82
73/1.34

With signal processing, span or set point adjustment (e.g., zero correction)

147
73/53.01

Liquid analysis or analysis of the suspension of solids in a liquid

422
73/53.02

Butter fat content

10
73/64.53

By vibration

184
73/60.11

Cleaning or foaming ability

50
73/61.41

Content or effect of a constituent of a liquid mixture

331
73/61.78

By pressure measurement

30
73/61.76

By thermal measurement

52
73/61.77

Vaporization (e.g., evaporation, distillation, etc.)

30
73/61.79

By vibration

153
73/61.62

Depositing characteristic

105
73/61.71

For measuring solid components (e.g., particles)

188
73/61.73

By flowing through barrier or restriction and measuring flow effect (e.g., pressure, volume of or rate of flow)

61
73/61.74

Thermal

15
73/61.72

By separation and subsequent measurement (e.g., by weighing, x-ray or microscope, etc.)

73
73/61.75

Vibration

191
73/61.43

Liquid constituent of a liquid mixture

213
73/61.51

Buoyant detector

40
73/61.48

By optical irradiation

72
73/61.47

By pressure measurement

39
73/61.46

By thermal measurement

61
73/61.49

By vibration

123
73/61.52

Chromatography

297
73/61.53

Column detail

81
73/61.56

Detail of fluid handling means (e.g., valve, control, etc.)

196
73/61.58

Detector detail

83
73/61.55

Including sampling, sample handling, or sample preparation

174
73/61.54

Paper or thin layer type

30
73/61.57

With detail of compensation or regulating means

39
73/61.61

Detector detail

70
73/61.44

Plural liquid constituent (e.g., multiphase liquid)

170
73/61.45

By vibration

41
73/61.59

With detail of sampling, sample handling, or sample preparation

84
73/61.42

Metallic particle constituent

65
73/61.63

Settling or filtering ability

69
73/61.64

By volume or flow rate

22
73/61.65

Sedimentation rate

49
73/61.69

By optical measurement

44
73/61.67

By pressure measurement

10
73/61.68

Including detail of fluid handling means, sampling, sample handling, or sample preparation

22
73/61.66

With means for accelerating solids (e.g., particles)

28
73/64.41

Gelling or coagulation

158
73/64.43

By optical measurement

78
73/64.42

By vibration

42
73/64.55

Interface

51
73/53.05

Lubricant testing

211
73/53.06

By analyzing a characteristic of a measuring surface

27
73/53.07

By solid content

65
73/64.54

Molecular weight

28
73/64.47

Osmotic pressure (e.g., diffusion characteristic)

94
73/53.03

Paper or wood suspension (e.g., paper or wood pulp)

50
73/53.04

By measuring fluid flow characteristic (e.g., by volume or rate of flow or by change in fluid level)

62
73/64.56

Sampler, constituent separation, sample handling, or sample preparation

172
73/64.48

Surface tension

67
73/64.49

By force or torque

14
73/64.51

By pressure

16
73/64.52

Liquid droplet

46
73/64.45

Vapor pressure

47
73/64.46

Differential pressure

10
73/64.44

Vapor-liquid ratio

11
73/54.01

Viscosity

229
73/54.22

Adhesion between wetted surfaces

17
73/54.02

Combined with other measuring means

111
73/54.23

Force reactance to member driven therein

71
73/54.37

By movement or displacement between shearing surfaces

40
73/54.24

By vibration

103
73/54.25

Dampening effect (e.g., frequency, amplitude, speed, or power measurement)

76
73/54.26

With detail of a drive means or a detecting means

43
73/54.27

With detail (e.g., circuitry) of a drive means or a detecting means

48
73/54.38

Detector detail

48
73/54.36

Penetrometer

6
73/54.28

Rotationally driven member

145
73/54.32

By measuring an opposed drag force

49
73/54.34

By measuring a counterbalance or restoring force

15
73/54.33

By measuring angular displacement

39
73/54.31

By measuring the driving force or the speed of the driven member

45
73/54.29

Comparator

8
73/54.35

Including detail of a motor drive, a stator, or a housing structure of a motor

70
73/54.04

Friction tube (e.g., capillary)

66
73/54.09

By pressure measuring

70
73/54.07

By time interval of travel or flow rate measuring

59
73/54.08

Including a photocell

10
73/54.05

Plural tubes

37
73/54.06

By pressure measuring

42
73/54.15

Gravity movement of an object in a liquid (e.g., a bubble)

33
73/54.21

Including an object concentricity guide means

2
73/54.19

Including detail of a timing detection circuit

4
73/54.17

Using a reference fluid

6
73/54.16

With detail of temperature or pressure regulating or compensating means

8
73/54.18

With means for restoring an object to its initial starting position (e.g., magnetic or fluid means)

11
73/54.03

Of concrete (e.g., slump indicator)

22
73/54.11

Orifice, nozzle, or extrusion means

37
73/54.14

By force, pressure, or displacement measuring

51
73/54.13

By time interval of travel or flow rate measuring

23
73/54.12

Plural fluids (e.g., comparison)

10
73/54.39

Shearing torque between parallel surfaces

78
73/54.42

Thermal

29
73/54.41

Vibration

167
73/54.43

With detail of a pressure or a temperature regulating means

39
73/290R

Liquid level or depth gauge

928
73/298

Exploring tube

29
73/305

Float

194
73/309

Buoyancy type

101
73/306

Combined

46
73/307

With warning signal or alarm

77
73/308

Electric

197
73/322.5

Float structure

154
73/311

Multiple floats

52
73/317

Pivoted float arm

211
73/318

With flexible cable transmission

13
73/312

Recording

12
73/310

Total registering

6
73/319

Vertically reciprocable

167
73/322

Indicator stem attached

41
73/321

With flexible cable transmission

55
73/320

With spiral cam or guide

17
73/313

With electrically controlled indicator

432
73/315

With float lock

15
73/316

With fluid transmission

4
73/314

With position sensing

128
73/299

Hydrostatic pressure type

169
73/300

Bathometer type

53
73/301

With electrically controlled indicator

106
73/302

With fluid displacement or replenishment

118
73/303

Suction type or vacuum tank action

17
73/304R

Immersible electrode type

540
73/304C

Capacitative

635
73/323

Sight glass

127
73/328

Boiler type

34
73/329

Duplex or multiple section

4
73/330

Transparent closure plate type

17
73/331

Bull's eye type

10
73/332

With valve

9
73/333

Safety feature

2
73/327

Reflector or magnifier

31
73/334

Transparent closure plate type

46
73/324

With cleaner

15
73/325

With guard or casing

27
73/326

Boiler type

21
73/297

Test cock type

3
73/295

Thermal type

275
73/290B

Ullage volume

74
73/290V

Vibratory type

691
73/296

Weighing type

78
73/294

With funnel or hose nozzle

21
73/293

With illumination

280
73/291

With other measuring device

161
73/292

Thermometer

113
73/DIG.5

Liquid levels with magnetic transmission

92
73/DIG.2

Magnetostrictive

81
73/865

Mass

95
73/426

Measuring vessel

87
73/429

Capacity adjustable

40
73/427

With depth indication

84
73/428

Removable indicator

26
73/170.16

Meteorology

151
73/170.24

Electric disturbance (e.g., lightning)

53
73/170.26

Icing condition (e.g., accretion)

66
73/170.25

Micrometeorite

12
73/170.27

Naturally occurring radiation (e.g., solar radiation)

22
73/170.17

Precipitation (e.g., rain gauge)

121
73/170.21

Sensing accumulated amount (e.g, rain gauge)

49
73/170.22

Using a float

11
73/170.23

Weight actuated (e.g., tipping bucket)

13
73/170.19

With heater or vaporizer

16
73/170.18

With recorder detail

13
73/170.28

Using unmanned, self-controlled airborne instrumentation carrier (e.g., radiosonde)

25
73/164

Miner's lamp

1
73/432.1

Miscellaneous

180
73/148

Model basin and testing tank

28
73/73

Moisture content or absorption characteristic of material

586
73/76

By desiccation or extraction

93
73/75

By heat conductivity

41
73/74

By residual capacity measurement

38
73/77

By wet and dry bulb temperature

10
73/DIG.9

Molten metal samplers

80
73/116

Motor and engine testing

1109
73/117.2

Disparate tests under operating conditions

173
73/117.3

With continuous operation

1081
73/119R

Motor part

165
73/119A

Fuel injection tests

542
73/120

Piston ring

19
73/118.1

Testing auxiliary unit

1461
73/118.2

Intake air flow

637
73/117.4

Thrust measurement (e.g., jet engine)

43
73/117.1

Utilizing a test chamber or tank to simulate operating conditions

51
73/117

With vehicle wheel supporting roller or belt

159
73/379.01

Muscular force (e.g., strength testing, exercising or training effort, etc.)

184
73/379.04

Impact

33
73/379.05

Using a resilient force-resister

7
73/379.06

Including a rotary element with a braking means (e.g., friction brake)

49
73/379.07

Pedal driven (e.g., cycle ergometer)

35
73/379.02

Jaw or hand (e.g., gripping, pinching, or biting)

64
73/379.03

Using a resilient force-resister

25
73/379.08

Using a resilient force-resister

41
73/379.09

Using hydraulic or pneumatic force-resister

44
73/178R

Navigation

569
73/178H

Helicopter

74
73/180

Leeway incidence or side-slip

81
73/179

Rate of climb (pressure type)

28
73/181

Ship's log

39
73/184

Drag type

4
73/185

Rotary

9
73/182

Pressure differential type

105
73/183

With integrating means

5
73/187

Rotary

35
73/186

Vane type

9
73/178T

Take-off and landing monitors

181
73/170.29

Oceanology (e.g., oceans, rivers, or lakes)

95
73/170.32

Bottom sediment or soil

32
73/170.31

Surface wave

27
73/170.33

Towed probe

24
73/170.34

Unattached, self-contained probe with buoyancy controlled level of descent

34
73/167

Ordnance and projectile

229
73/172

Orthopedic pressure distribution

131
73/865.5

Particle size

339
73/DIG.11

Photoelectric cell

17
73/DIG.4

Piezoelectric

226
73/112

Power plant or unit efficiency

73
73/113

Automobile fuel consumption

104
73/114

Miles per gallon

99
73/115

Pressure derivative

310
73/866.5

Probe or probe mounting

917
73/157

Record strip sprocket hole testing

8
73/66

Rotor unbalance

87
73/459

Combined static and dynamic

29
73/460

Dynamic (spinning)

130
73/461

Mass centering

27
73/468

With counterbalancing means

100
73/470

By circumferentially adjustable weights

32
73/469

By radially and circumferentially adjustable weights

17
73/462

With electrical sensor and indicator

388
73/465

Oscilloscope (cathode ray)

10
73/464

Rotatable switch

8
73/466

Stroboscopically illuminated

9
73/467

Indicator

1
73/463

Wattmeter

0
73/471

With vibratable mount feature

37
73/472

Free floating rotor

10
73/473

Horizontal axis

17
73/475

Horizontal rotational axis

21
73/479

Horizontal fulcrum

4
73/476

Horizontal plane of vibration

8
73/477

Both ends free

11
73/478

With selective endlock

4
73/474

One rotor end universally tiltable

2
73/482

Gravitational moment tilts rotor about axis transverse to spin axis

3
73/483

Universally tiltable

26
73/485

With expansible or contractible centering means

6
73/486

With suspension means

10
73/484

With tapered rotor centering means

10
73/480

Gravitational moment turns rotor about spin axis

15
73/481

Ways

0
73/457

In situ

57
73/458

With counterbalancing means

23
73/455

Propeller, impeller, or fluid coupling

49
73/456

Single blade balancing

12
73/487

Tool and adjunct

128
73/863

Sampler, sample handling, etc.

315
73/864.81

Analyzer supplier

304
73/864.85

Connector for separable holder

57
73/864.86

Septum structure

42
73/864.87

Syringe with connector

65
73/864.82

Having sample capsule support

33
73/864.83

Having sample confining chamber

112
73/864.84

Connector for separable holder

52
73/863.01

Automatic control

270
73/863.02

Quantity or rate of flow responsive

108
73/863.03

Rate of sample flow continuously controlled

136
73/864

Capture device

256
73/864.72

Capillary attraction retention

63
73/864.33

Capture by fluid current

108
73/864.73

Conduit

115
73/864.74

With penetrating means

131
73/864.41

Cutter, tearer, or scraper

92
73/864.43

Auger or drill

36
73/864.44

Corer

120
73/864.45

With corer advancing means

72
73/864.42

Jaw

14
73/864.71

Material for particulate adhesion

86
73/864.01

Pipette or cannula

356
73/864.23

Pipette fixed; source movable

59
73/864.24

Pipette longitudinally movable

220
73/864.25

And transversely movable

168
73/864.02

Self-filling of self-limiting

97
73/864.22

With pipette contacting second fluid supply

154
73/864.21

With sample supply to analyzer

177
73/864.11

With suction applying and liquid discharge means

295
73/864.16

Piston and cylinder

210
73/864.18

Plural or adjustable limit stops

146
73/864.17

Plural

106
73/864.13

Piston within pipette

160
73/864.14

With particular connection or release means

203
73/864.12

With separate diluent supply

65
73/864.15

With valve for connection to external pressure source

64
73/864.03

With user mouth protection

22
73/864.51

Receptacle type

127
73/864.62

Expansible chamber

110
73/864.61

Fluid displacement

16
73/864.53

Mold

35
73/864.55

With diminutive fill passageway

37
73/864.56

Mating sections

29
73/864.57

Labyrinth

23
73/864.59

With holder or connector

50
73/864.58

With sample conditioner

43
73/864.54

With suction applier

10
73/864.52

Preevacuated

62
73/864.63

With valve or closure

160
73/864.65

Contact actuated

21
73/864.67

Messenger actuated

31
73/864.64

Side opening

57
73/864.66

Support force or inertia actuated

21
73/864.34

Sample meter or pump

256
73/864.35

Chamber with alternate pressure or vacuum applier

66
73/864.31

With capture device transporter

120
73/864.32

Cyclically operated scoop

28
73/863.71

Conduit or passageway section capture chamber

160
73/863.72

Single valve unit

55
73/863.73

Capture chamber within valve unit

99
73/863.91

Conveyor coacting

58
73/863.92

Integral with conveyor structure

11
73/863.41

Flow divider, deflector, or interceptor

78
73/863.42

Attached to mouth of dumpable receptacle

7
73/863.61

Branched conduit

79
73/863.51

Having an upstream-facing-opening-type capture element

80
73/863.54

Mounted for reciprocation

33
73/863.55

Oscillating

8
73/863.58

Pitot tube type

43
73/863.56

Rotary

42
73/863.57

With blocking means

35
73/863.52

With receptacle

98
73/863.53

Mounted for flow zone traverse

29
73/863.43

Having precapture flow guide or homogenizer

41
73/863.44

Oscillating or reciprocating

16
73/863.45

Rotary

13
73/863.31

Plural parallel systems

173
73/863.32

Pipette

253
73/863.33

Plural capture, single receiver

109
73/864.91

Sample holder

301
73/863.21

With constituent separation

351
73/863.22

Particle impact

155
73/863.23

Sieve, filter, or semipermeable membrane

492
73/863.25

Changing feature

63
73/863.24

Cleaning

74
73/863.11

With heating or cooling

284
73/863.12

And separation

224
73/863.81

Withdrawing through conduit or receptacle wall

244
73/863.82

Capture element movable to plural loci

48
73/863.85

Lock or seal for sampler insertion or removal

136
73/863.86

Valve or restriction

222
73/863.83

With metering means or pump

180
73/863.84

Expansible chamber

83
73/159

Sheet, woven fabric or fiber

551
73/160

Filament

247
73/865.6

Simulated environment (e.g., test chambers)

463
73/32R

Specific gravity or density of liquid or solid

202
73/451

Float operated indicator

16
73/452

Continuous test fluid supply

9
73/453

Electrical indication

35
73/454

Pivoted float

17
73/444

Freely vertical reciprocable float with carried indicium

18
73/445

Continuous test fluid supply

6
73/448

Float structure

14
73/450

Specimen carrying

7
73/449

With carried thermometer or thermal compensator

6
73/447

With liquid level responsive gauge or compensator

27
73/446

With section means

0
73/438

Hydrostatic pressure type

53
73/439

Bubble tube

19
73/32A

Involving vibration of substance or the measuring apparatus

284
73/440

Multiple floats of graduated density

33
73/441

Portable hand manipulable syringe type

4
73/442

With thermometer

1
73/443

With calculator

1
73/433

With weighing feature

66
73/434

Continuous test fluid supply

24
73/437

Immersion

39
73/435

Plural supports for specimen

3
73/436

Vertically, commonly suspended

9
73/866.4

Specimen model or analog

164
73/760

Specimen stress or strain, or testing by stress or strain application

449
73/788

By loading of specimen (e.g., strength of material test)

150
73/801

Acoustic emission

124
73/802

Aircraft structure

76
73/849

Bending, flexing, or folding

170
73/854

By angular displacement of opposite ends of specimen

26
73/853

Having opposite ends of specimen clamped

26
73/852

Loading means intermediate stationary end holders or supports

52
73/851

To failure or fracture

39
73/850

Weld testing

47
73/818

Compressional

213
73/824

By rotating squeezing element

57
73/820

Fluid displacement provides indication

15
73/822

Plastic flow or creep

23
73/819

Plural specimen or multiaxial loading

44
73/823

Residual deformation (e.g., consolidation)

34
73/821

To fracture, crushing, or yield point

63
73/825

With hydraulic or pneumatic actuation

55
73/803

Concrete

91
73/804

Model of structure to determine structure properties

52
73/800

Optical

444
73/794

Plural diverse stress-strain tests or composite loads

109
73/795

Strain

40
73/796

Tension-compression

33
73/797

Alternating

10
73/798

Hydraulic or pneumatic actuation

31
73/838

Rupture or burst strength of sheet material by transverse loading

27
73/840

Hydraulic or pneumatic actuation

15
73/839

Including cutting or piercing element

4
73/841

Shear

94
73/842

Bond

80
73/843

By rotary element

41
73/844

Impact (e.g., pendulum)

12
73/846

Opposing work holders including specimen

31
73/845

To fracture or failure

34
73/799

Specimen cracking or crack propagation

201
73/789

Stress-strain relationship determination

119
73/790

Compression

49
73/791

Graphical output

22
73/792

Moving chart

1
73/793

Drum

0
73/826

Tensile

211
73/827

Bond test

193
73/831

Having specified clamp

91
73/832

Interior to specimen

14
73/833

Jaws

40
73/837

Hydraulic or pneumatic actuation

37
73/836

Pendulum dynamometer

1
73/828

Strand or chain test

88
73/829

By roller

33
73/830

To failure

27
73/834

To failure

44
73/835

Tear

21
73/847

Torsion

94
73/848

To failure

8
73/806

Varied according to predetermined pattern

34
73/807

Applied directly by fluid pressure

24
73/816

Hydraulic or pneumatic actuation

26
73/817

Motor driven actuating screw

4
73/808

Repetitive

100
73/813

Compressive

24
73/811

Electric control circuit or particular loading device

31
73/812

Flexing, bending, or folding

56
73/809

Plural specimen

19
73/815

Shear

23
73/810

To failure

44
73/814

Torsional

26
73/805

Varied in response to specimen condition other than failure

34
73/783

Deformation or change in stress after fracture, cutting, or boring

50
73/784

Earth stresses

167
73/786

In static structures (e.g., buildings, bridges)

108
73/762

Indicating coating or sheet providing direct visual indication (e.g., cracking, color change)

75
73/785

Prestressed specimen

16
73/763

Specified electrical sensor or system

124
73/765

Compensation (e.g., linearization)

56
73/766

Temperature

144
73/769

Coupling circuit for specific additional purpose (e.g., noise suppression) or having specified structure

52
73/771

Having selector switching means

15
73/770

Peak indicating system

25
73/772

Plural sensed signal system

32
73/773

Specified signal transmitting link

25
73/764

Having level attainment counter

21
73/767

Plural sensors at single location (e.g., diverse orientation, plural level)

69
73/768

Sensor embedded in specimen

110
73/774

Specified sensor structure

180
73/775

Bonded to specimen

70
73/776

Sensor comprises coating

45
73/780

Capacitive

163
73/779

Magnetic or inductive

195
73/777

Semiconductor

299
73/778

Vibratory element

85
73/781

Specified load or strain transmission device from specimen to electrical detector

128
73/782

Strain multiplier

24
73/856

Specimen clamp, holder, or support

289
73/860

Opposed pair

55
73/858

Winding drum or roller type

3
73/857

With hydraulic or pneumatic actuation of grip

26
73/859

With wedging or camming elements contacting specimen

33
73/787

Stress or strain history of a specimen without application of a load

42
73/855

Support, holder, or housing for unspecified type electrical sensing element

51
73/761

Threaded fastener stress

339
73/488

Speed, velocity, or acceleration

241
73/514.01

Acceleration determination utilizing inertial element

183
73/514.02

Angular acceleration

93
73/514.03

Fluid or fluent inertial mass (e.g., electrons, ions, plasma)

20
73/514.04

Inertial flywheel

14
73/514.35

Electric

58
73/514.05

Fluid or fluent material

25
73/514.11

Detection by fluid pressure

19
73/514.09

Fluid or fluent inertial mass

83
73/514.12

Fluid or fluent material dampening of an inertial element

44
73/514.13

Gas

20
73/514.06

Fluid or fluent material support of an inertial element

18
73/514.07

Gas

8
73/514.08

Magnetic fluid

30
73/514.38

Including an elastic support for an inertial element (e.g., spring)

218
73/514.36

Pendulum or beam

243
73/514.37

Including a pivot support

54
73/514.14

Specific type of dampener (e.g., eddy current dampener)

27
73/514.16

Specific type of electric sensor or specific type of magnetic sensor

204
73/514.32

Capacitive sensor

659
73/514.25

Charged particle or radioactive particle sensor

18
73/514.29

Having a vibrating element

254
73/514.31

Inductive or magnetic sensor (e.g., hall effect sensor)

165
73/514.26

Optical sensor

117
73/514.27

Frequency or phase shift

33
73/514.34

Piezoelectric sensor

231
73/514.17

Rebalance

58
73/514.18

Electrostatic restoring means

157
73/514.24

Including an elastic support for an inertial element (e.g., spring)

54
73/514.21

Pendulum or beam

83
73/514.22

Including a bearing support

28
73/514.23

Including a flexure support

88
73/514.19

Radiant energy sensor (e.g., optical, charged, or radioactive particle)

47
73/514.33

Resistive sensor

222
73/514.28

Surface acoustical wave

25
73/514.15

Spinning or vibrating accelerometer

56
73/498

Adjusting means for reading structure

3
73/504.17

Angular rate using a fluid vortex rate sensor

6
73/504.02

Angular rate using gyroscopic or coriolis effect

197
73/504.05

Fluid or fluent inertial mass (e.g., electrons, ions, plasma)

17
73/504.06

Fluid jet

36
73/504.07

Rotary

9
73/504.03

Multisensor for both angular rate and linear acceleration

87
73/504.04

Vibratory mass

227
73/504.08

Rotary gyroscope

60
73/504.11

Flexible rotor or flexibly mounted rotor

37
73/504.09

Gimbal support

26
73/504.12

Vibratory mass

859
73/504.15

Cantilever

85
73/504.16

Tuning fork

321
73/504.14

Elongated element with spaced supports

268
73/504.13

Hollow circular-shaped inertial element

161
73/504.01

Angular rate using wave or beam motion (e.g., sagnac type)

38
73/535

Centrifugal weight type

17
73/537

Bias automatically variable during operation

2
73/538

Snap action

8
73/546

Leaf spring biasing means

1
73/539

Limit stop for weight

2
73/548

Radially projecting striker type

4
73/549

Rigid mass crossing axis at an acute angle

1
73/551

Surface and follower (e.g., cam or weight as wedge)

4
73/547

Toggle joint mounted

1
73/536

Weight lever arm or pivot automatically variable during operation

5
73/550

Weighted bell crank lever type

4
73/540

With adjusting means

2
73/544

Adjusting screw means and bias spring concentric to centrifugal axis

1
73/542

Biasing weight

2
73/541

Diverse

0
73/543

Lever or gear adjustor

0
73/545

Spring and adjustor connect paired weights

1
73/507

Comparison to a fixed standard, master or reference speed device

15
73/502

Externally connected pressure gauge gives reading

4
73/521

Fluid

21
73/525

Brake (e.g., vanes in air)

0
73/522

Dampening means

8
73/523

Expansible chamber devices

3
73/524

Fluid coupling or torque convertor type

2
73/499

Illuminated reading device

22
73/495

Indicating diverse conditions

26
73/500

Liquid surface is or moves reading means

4
73/501

Surface of revolving liquid body

0
73/514.39

Magnetic speed measuring or mechanical speed measuring with ancillary magnetic means or with ancillary electrical means

107
73/519.01

Eddy current drag means (e.g., drag cup)

16
73/520.01

With a flux adjusting means

5
73/506

Means integrating intermittent speed source impulses

16
73/503

Means integrating time and acceleration

32
73/503.3

Gyroscope

24
73/489

Recording or registering interrelated factors

72
73/510

Response to multiple sensing means or motion conditions

284
73/511

Response to both velocity and acceleration

52
73/512

Centrifugal-type velocity sensor and separate inertial means

2
73/493

Structural installation or mounting means

323
73/494

Installed in rotary speed source

58
73/497

Temperature compensator

143
73/496

Vibration control or antistick means for reading structure

12
73/526

With dampening or shock-absorbing means

23
73/490

With distance registering means

74
73/508

With governor drive failure responsive means

0
73/527

With input means

10
73/529

Frictional (e.g., friction wheels)

11
73/528

Selective speed transmitter

5
73/513

With manual control

2
73/491

With means for retaining reading

39
73/492

Maximum acceleration

48
73/530

With output transmitting mechanism

6
73/532

Gear

4
73/533

Rectilinear rack

0
73/534

Surface and follower

2
73/531

With transmission adjustment means

3
73/509

With response to a nonspeed condition

44
73/504.18

With rotary gyroscope

34
73/161

Spring testing

77
73/156

Statistical record verifying

6
73/104

Surface and cutting edge testing

380
73/105

Roughness

1271
73/12.01

Testing by impact or shock

196
73/12.04

Accelerated or decelerated specimen (e.g., propelled or dropped specimen support carriage)

105
73/12.07

By hydraulic or pneumatic forces

40
73/12.06

Dropped

65
73/12.05

Particle or projectile specimen

36
73/12.02

Resilient ball (e.g., golf ball, baseball, etc.)

29
73/12.08

Specimen directly subjected to a fluid pressure pulse or wave

41
73/12.09

Specimen impactor detail

146
73/12.13

Dropped

75
73/12.14

Pivoted

24
73/12.11

Particle or projectile

40
73/12.12

Reciprocating or oscillating

31
73/12.03

Typewriting ribbon or carbon paper

3
73/865.3

Testing by imparting motion

111
73/11.01

Testing impact delivering device (e.g., a hammer)

60
73/11.03

Pile driving hammer

25
73/11.02

Shot peener

19
73/865.9

Testing of apparatus

696
73/866

Testing of material

489
73/11.04

Testing of shock absorbing device (e.g., automobile shock absorber, gun recoil apparatus, etc.)

83
73/11.09

By applying reciprocating or oscillating motion

9
73/11.07

In situ vehicle suspension

47
73/11.08

By applying reciprocating or oscillating motion

21
73/11.06

Railway draft gear

8
73/11.05

Torsional vibration damper

16
73/52

Testing sealed receptacle

275
73/146

Tire, tread or roadway

1443
73/146.2

Tire inflation testing installation

410
73/146.3

By direct fluid pressure reading

172
73/146.4

Telemetric (e.g., indicator on cowl)

146
73/146.5

Electric

791
73/146.8

Tire stem attachments

400
73/162

Toothed gear

106
73/865.7

Touch or taste

48
73/570

Vibration

165
73/DIG.1

Vibration

155
73/570.5

Acoustic levitation

47
73/584

By mechanical waves

168
73/587

Acoustic emission

417
73/645

Acoustic parameter

68
73/646

Amplitude, power, or intensity

105
73/647

Current generating or modifying

42
73/648

Frequency sensitive

30
73/589

Acoustical impedance

72
73/596

Beamed

111
73/603

Acoustic holography

79
73/604

Having means substituted for reference signal

4
73/605

Liquid or deformable surface holography

17
73/599

Attenuation measurement

332
73/600

For flaw or discontinuity detection

213
73/627

By reflected wave

292
73/628

Having plural sonic type transmitters or receivers tranducers

360
73/629

Having unitary sonic type transmitter-receiver transducer

250
73/630

Establishing resonance in a test body

24
73/631

Having automatic gain control

95
73/601

Having plural, diverse forms of radiant energy

79
73/606

Imaging of discontinuity with stationary sonic transmitter

208
73/608

By bragg diffraction

6
73/607

By scan of a sonic receiver

48
73/618

Measuring or testing system having scanning means

204
73/620

By reflected wave

399
73/621

Having compound scan

82
73/625

Having plural sonic type transmitter or receiver transducers

307
73/626

Switched

459
73/624

Having separate sonic transmitter and receiver

132
73/622

Of tubing, vessel, or cylindrical object

387
73/623

Scan from within object

218
73/619

Programmed scan

49
73/609

Measuring or testing system having threshold, gating, delay, or blocking means

105
73/610

Electronic gating

57
73/611

Adjustably responsive to information signal

62
73/613

Of noise

19
73/615

Of signals to pass only echoes from front surface or flaw and from rear surface of test body

42
73/616

Of signals to pass only echoes from rear surface of test body

11
73/614

Of signals to pass only echoes from within test body

76
73/612

Plural gating

46
73/617

Having mechanical delay or mechanical blocking

28
73/632

Sonic wave transmitter or receiver transducer

303
73/644

Having significant coupling means

487
73/633

Having transducer scanning means

211
73/634

Automatic transducer positioning

152
73/641

Plural sonic transmitters or receivers

153
73/635

Rolling contact

51
73/638

Along cylindrical object

62
73/637

Around cylindrical object

73
73/636

On railroad rails

74
73/639

Transducer forms wheel or is within a wheel

75
73/640

Scanning curved surface in direction of curvature

88
73/642

Having wave shaping means

196
73/643

Nonvibrating transducer

325
73/597

Velocity or propagation time measurement

840
73/598

For flaw or discontinuity detection

270
73/602

With signal analyzing or mathematical processing

947
73/593

Bearing, gear, or related moving mechanism

259
73/592

Fluid, fluid leak, or pipe flaw detection

246
73/595

Frangible

10
73/590

In detection of a liquid reaction, a chemical reaction, or a nuclear reaction

76
73/585

Including ear or hearing testing

170
73/591

Listening or sound tube

16
73/586

Reverberation

15
73/594

Soil or building structure

127
73/588

Structural bond evaluation

153
73/577

Fatigue study

79
73/578

Electromagnetic drive

17
73/573

Hardness or compliance

69
73/572

Loose object detection

29
73/574

Mechanical impedance

47
73/576

Device having an electromagnetic drive

16
73/575

Of an elastomer

22
73/579

Resonance, frequency, or amplitude study

853
73/581

Including axial force determination

34
73/582

Including structural bond evaluation

59
73/580

Including weight determination

83
73/583

Of aircraft or related structural element

85
73/649

Sensing apparatus

297
73/650

Torsional

81
73/651

Vibratable reed

111
73/658

With electrically controlled indicator

107
73/661

Having a probe

127
73/660

Rotating machinery or device

569
73/659

Spectrum analysis

176
73/652

With inertia element

105
73/654

With electrically controlled indicator

148
73/653

With light beam indicator

77
73/655

With light beam indicator

237
73/657

By frequency or phase shift

182
73/656

By optical holography

29
73/571

Test chamber

53
73/662

Vibrator

145
73/671

Having a fluid jet

8
73/672

Having a rotatable imbalanced mass

10
73/663

Table, platform, or other support

160
73/664

Circuitry

44
73/667

Eccentrically vibrated

16
73/668

Electromagnetically vibrated

51
73/665

Having fluid bearing or fluid pressure actuated

59
73/666

Having spring support

26
73/669

Vehicle shaker

54
73/670

Treadmill

5
73/861

Volume or rate of flow

420
73/227

Area-velocity integrating

23
73/861.41

By counting drops, bubbles, or particles

78
73/861.08

By measuring electrical or magnetic properties

166
73/861.11

Electromagnetic induction (e.g., faraday type)

96
73/861.12

With detecting electrodes

389
73/861.14

For dielectric fluids

18
73/861.16

Including electrically interconnected or synchronized input and output circuit

63
73/861.17

Selective or periodic sampling

96
73/861.13

Including permanent magnet or d.c. field

39
73/861.15

Plural pairs of detecting electrodes

70
73/861.09

Ionization type

51
73/861.32

By measuring swirl rate imparted by static means

15
73/861.34

Precess type

7
73/861.33

With turbine in a swirl chamber

22
73/861.71

By measuring thrust or drag forces

75
73/861.72

By changing fluid direction

29
73/861.73

Impact of particulate material

86
73/861.74

On a vane

115
73/861.75

With rotation about a fixed axis

67
73/861.76

Spring biased

51
73/861.07

By measuring tracer concentration

52
73/861.05

By measuring transit time of tracer or tag

151
73/861.95

Thermal tracer or tag

63
73/861.06

With autocorrelation or cross-correlation detection

82
73/861.18

By measuring vibrations or acoustic energy

243
73/861.21

Caused by fluid interaction with obstacle

62
73/861.22

Vortex shedders

245
73/861.23

Acoustic

77
73/861.24

Movable sensor responsive to vortices

174
73/861.26

Deflection of acoustic waves

43
73/861.19

Produced by fluidic oscillator

72
73/861.25

Reflection or scattering of acoustic waves

346
73/861.27

Transit time of acoustic waves

330
73/861.31

Transmitted along parallel paths

43
73/861.28

Transmitted along single path

261
73/861.29

In both directions simultaneously

111
73/198

Combined

162
73/201

With connection or box

117
73/200

With gas and liquid separator

71
73/199

With pressure regulator or demand limit

54
73/272R

Element

40
73/277

"frostproof" construction

5
73/275

Antireversing mechanism

12
73/276

Check valve

6
73/273

Casing

93
73/274

Diaphragm meter type

3
73/278

Diaphragm mounting

4
73/279

Diaphragm

5
73/280

With oiling structure

1
73/281

Tangent adjustment

9
73/272A

With remote register

8
73/232

Expansible chamber

17
73/262

Diaphragm or collapsible wall

19
73/263

Multiple diaphragm

8
73/264

Duplex

5
73/268

With oscillating or reciprocating valve

5
73/265

With rotary valve

1
73/266

Crank operated

3
73/267

With flag rod

1
73/269

Single diaphragm

22
73/270

With diaphragm actuated valve trip gear

2
73/271

With fluid actuated valve

4
73/252

Oscillating piston

14
73/239

Reciprocating piston or cylinder

69
73/243

Duplex

5
73/245

With transverse shaft

2
73/246

With single distributing valve

2
73/244

Wobble plate or cam

2
73/241

Oscillating cylinder

2
73/247

Radial cylinder

14
73/240

Transversely reciprocating piston and cylinder

0
73/248

Valved piston

8
73/242

Valveless

5
73/249

With fluid actuated valve

9
73/250

With piston or rod actuated valve gear

7
73/251

With trip gear

6
73/253

Rotary piston or cylinder

45
73/254

With compensating bypass

1
73/261

With interengaging pistons

53
73/255

With orbital movement

10
73/256

Plural stationary abutment

6
73/257

Single stationary abutment

9
73/258

Nutating piston

13
73/259

With sliding vane

11
73/260

With swinging vane

7
73/234

Wet type (e.g., liquid seal)

4
73/238

Nutating bell

8
73/236

Oscillating bell or drum

2
73/237

Reciprocating bell

2
73/235

Rotary drum

0
73/233

With variable indicator drive

18
73/861.351

Mass flow by imparting angular or transverse momentum to the fluid

22
73/861.354

Coriolis or gyroscopic

75
73/861.355

Vibrated conduit

309
73/861.357

Drive and sensor element located on straight conduit portion

257
73/861.356

Signal processing or analysis details

214
73/861.353

Reaction turbine or vane

17
73/861.352

Rotated resiliently coupled elements

16
73/861.04

Of selected fluid mixture component

351
73/202

Proportional

140
73/202.5

Thermal sensing of flow

242
73/203

With valved proportioning means

22
73/195

System

133
73/197

Compound meter

49
73/196

Flow comparing

77
 

Tank type

 
73/219

Plural measuring chamber

23
73/221

With float operated valve

6
73/220

With fluid-pressure operated valve

2
73/222

With siphon discharge

0
73/217

Rotary tank or bucket

8
73/218

With power drive

10
73/223

Single measuring chamber

48
73/224

With float operated valve

9
73/225

With trip gear

0
73/226

With siphon discharge

7
73/204.11

Thermal type

152
73/204.23

Having particular electrical heating, cooling, or thermal sensing element

102
73/204.25

Resistive element

128
73/204.27

Wire type (e.g., hot wire)

120
73/204.26

With substrate carrier (e.g., thin film)

438
73/204.24

Thermoelectric junction

33
73/204.15

Including detail of feedback or rebalancing circuitry

171
73/204.16

By control of a separate heating or cooling element

62
73/204.14

Including digital or pulse measuring circuitry

73
73/204.18

Including response characteristic or condition compensation

115
73/204.19

For temperature

114
73/204.13

With auxiliary fluid contacting or in heat exchange relation with flow path (e.g., thermodilution)

30
73/204.12

With conduit extending between heat sinks

24
73/204.17

With distinct heating circuitry for a self-heated sensor

55
73/204.21

With fluid flow deflector or restrictor (e.g., baffle, constriction)

160
73/204.22

With sensor housing

228
73/861.39

Using an applied fluid jet

9
73/861.42

Using differential pressure

170
73/861.69

Centrifugal

9
73/861.65

Pitot

147
73/861.67

Adjustable

12
73/861.66

Sensing at plural transverse locations

86
73/861.68

With heating element

16
73/861.49

Pressure applied to liquid column or reservoir

22
73/861.51

With linearization

5
73/861.47

Pressure applied to movable member (e.g., a diaphragm)

99
73/861.48

With linearization (e.g., square root extraction)

14
73/861.52

With restriction

263
73/861.53

Automatically variable restriction

84
73/861.55

Cone and ball or disk

55
73/861.56

With structure of coupling to indicator

52
73/861.57

With structure of float, float tube, or float guide

58
73/861.58

Orifice and tapered plug

55
73/861.54

Slotted piston or cylinder

39
73/861.59

Including recirculation pump

4
73/861.61

Orifice or flow nozzle

125
73/861.62

Adjustable

29
73/861.63

Venturi

150
73/861.64

Inlet or outlet structure

32
73/861.43

With time integration

10
73/861.44

By electrical means

22
73/861.45

By mechanical means

2
73/861.46

Including pressure applied to liquid column or reservoir

4
73/861.77

Using rotating member with particular electrical output or circuit

210
73/861.78

With pick-up coil

62
73/861.79

Using turbine

142
73/861.85

Anemometers

50
73/861.89

Axial supply and delivery

23
73/861.94

With magnetic coupling drive assembly

18
73/861.93

With mechanical coupling to indicator

7
73/861.92

With structure of bearing or turbine support structure

36
73/861.91

With structure to reduce friction or wear

25
73/861.87

With flow direction retained in a plane perpendicular to turbine axis

38
73/861.88

Mechanical coupling to indicator

19
73/861.86

With fluid directed radially outward

1
73/861.81

With response modification

16
73/861.83

Axial supply and delivery

38
73/861.84

Differentially responsive turbines

10
73/861.82

Pressure responsive valve or restriction

7
73/215

Weir type

83
73/216

Submerged orifice or discharge nozzle

15
73/861.01

With indirect temperature or density compensation

67
73/861.02

Electrical

118
73/861.03

Digital

85
73/149

Volumetric content measuring

357
73/147

Wind tunnel: aerodynamic wing and propeller study

310
73/37

With fluid pressure

443
73/49.8

Clamp, plug, or sealing feature

278
73/37.5

Dimension, shape, or size

151
73/37.9

Internal gauging

45
73/37.6

Moving specimen

33
73/37.7

Sheet or filament

88
73/37.8

Plural tests

18
73/39

Fluid pressure brake system or unit

50
73/40

Leakage

928
73/46

Between fitted parts (e.g., joints)

329
73/47

Piston, piston ring, or engine valve

52
73/48

Tire valve

6
73/40.7

By probe gas, vapor, or powder

608
73/41

Conveyor feed

69
73/45

With defective article discard

21
73/45.1

Automatic

30
73/45.2

Electrically controlled

16
73/45.4

Sealed receptacle

52
73/45.3

Vacuum support failure

10
73/41.2

With immersion

6
73/41.3

Defective article discard

3
73/41.4

Automatic

8
73/40.5R

Fluid handling conduit in situ

777
73/40.5A

Using acoustic detectors

227
73/49.1

Pipe

294
73/49

Pneumatic tire

19
73/49.2

Receptacle

689
73/49.3

Sealed

352
73/45.5

With immersion

56
73/45.6

Pneumatic tire

4
73/45.7

Mesh envelope

0
73/45.8

Radiator

10
73/49.7

Motor part or auxiliary

303
73/49.5

Pipe

178
73/49.6

With power-operated closure or seal

35
73/38

Porosity or permeability

765
73/49.4

With ram pressure inducer

14
 
 
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