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Class Information
Number: 374
Name: Thermal measuring and testing >
Description: This is the generic class for making a determination of either (1) a characteristic or condition of an object or system utilizing heating or cooling as a significant part of the test and not provided for in other classes, or (2) a thermal quantity or condition.










Class Number Class Name No. of Patents
374/15

By applying known thermal gradient (e.g., indication of response by location)

23
374/31

Calorimetry

208
374/39

Gain or loss of heat by heat utilizing load in path of heat exchange fluid

68
374/40

Determined by combining flow rate and temperature signals of heat exchange fluid

45
374/41

Signals combined electrically

44
374/35

Heat absorbing heigh temperature gas probe (e.g., enthalpy or fluid cooled probe)

14
374/36

Heat value of combustion (e.g., 'calorific value')

64
374/38

Having bomb or cartridge ignition chamber

19
374/37

Having specified control of input of mixture

46
374/42

Throttling calorimeter (e.g., steam quality)

27
374/32

Total radiant energy or power measurement

106
374/33

With control of heat added to or lost from a sample container (e.g., isothermal calorimetry)

84
374/34

With controlled adiabatic shield

21
374/43

Determination of inherent thermal property (e.g., heat flow coefficient)

292
374/44

Thermal conductivity

235
374/10

Differential thermal analysis

165
374/11

Detail of electrical heating control

79
374/12

Detail of sample holder or support therefor

67
374/13

Formed by thermoelectric element

13
374/6

Distance or angle

45
374/7

Thickness, erosion, or deposition

131
374/9

Emissivity determination

79
374/8

Flammability testing

44
374/29

Heat flux measurement

227
374/30

By differential temperature measurement along undisturbed thermal gradient

72
374/208

Housing, support, or adjunct

960
374/209

Removable probe cover

105
374/4

Leak or flaw detection

147
374/5

With heating or cooling of specimen for test

307
374/210

Miscellaneous

14
374/100

Temperature measurement (e.g., thermometer)

158
374/117

By a vibratory effect (e.g., resonant frequency, acoustical)

207
374/118

Resonant frequency by fluid flow

19
374/119

Vibration velocity (e.g., echo timing)

74
374/163

By electrical or magnetic heat sensor

422
374/166

At plural zones

168
374/167

Scanning

39
374/178

By barrier layer sensing element (e.g., semiconductor junction)

360
374/174

By conductive fluid or work function within sensor (e.g., ionization)

9
374/183

By current modifying sensor

392
374/185

Detail of resistive sensor

338
374/184

Reactive element (e.g., capacitive)

65
374/179

By thermoelectric potential generator (e.g., thermocouple)

471
374/181

Reference junction compensation

72
374/182

Reference junction temperature control

34
374/180

Specimen is part of thermoelectric circuit

23
374/170

Digital output

403
374/171

With digital linearizing circuitry

84
374/176

Including sensor having hysteresis or cryogenic property (e.g., ferromagnetism, superconductivity)

74
374/177

Ferroelectric

21
374/175

Thermal noise generated in conductor

27
374/172

With compensation for sensor nonlinearity or lead impedance

112
374/173

By feedback in amplifier circuit or with constant current source in circuit

62
374/165

With heat exchanger or conductor

79
374/164

With preheated sensing probe

113
374/168

With self-rebalancing arrangement (e.g., servo-potentiometer, thermal link)

20
374/169

With thermal lag compensation

72
374/141

Combined with diverse art device

813
374/150

With bottle (e.g., nursing)

66
374/144

With combustion engine

237
374/145

Cooling system

64
374/146

Radiator cap mounted thermometer

13
374/151

With confection or infant pacifier

28
374/149

With cooking compartment or door thereof (e.g., oven)

121
374/152

With electrical component (e.g., transformer)

149
374/156

With float

24
374/147

With fluid carrying conduit (e.g., shower pipe)

179
374/148

Sensor within conduit

183
374/142

With other measuring device

348
374/143

Pressure

209
374/155

With percing element

85
374/153

With roll or rotary specimen or support

133
374/154

With coupling between rotating sensor and stationary electrical circuitry

21
374/157

With sampling cup

55
374/101

Composite temperature-related paramenter

54
374/109

Climate related (e.g., wind-chill factor, discomfort index)

112
374/110

Plural spaced temperature function

116
374/116

By single sensor (e.g., elongate or with plural fluid intakes)

19
374/112

Difference or gradient

121
374/114

By current modifying elements in circuit (e.g., bridge)

30
374/113

By thermoelements connected in series opposition

17
374/111

Highest or lowest of spaced temperatures

29
374/115

Space average

38
374/102

Time-temperature relationship (e.g., integral, deterioration, change)

288
374/108

Degree-days

6
374/104

Peak (maximum or minimum) with respect to time

66
374/105

Indicating tube with sensing material return prevention

6
374/106

Permanent visual indication (i.e., irreversible)

121
374/107

Rate of change

58
374/103

Time-temperature integration performed by particular circuit arrangement

45
374/136

Geophysical (e.g., well bore, underwater)

117
374/120

In spaced noncontact relationship to specimen

249
374/135

By fluid flow within or to sensor (e.g., convection, heat transfer, differential pressure)

123
374/121

By thermally emitted radiation

597
374/133

Ambient temperature compensated (e.g., dummy sensor)

129
374/122

By microwave arrangement

77
374/129

Comparison with radiation reference standard

171
374/126

Having emissivity compensating or specified radiating surface

171
374/127

Having significant frequency limitation or relationship (e.g., peak, ratio)

73
374/128

Having significant signal handling circuitry (e.g., linearizing, emissivity compensation)

138
374/130

Optical system structure (e.g., lens)

268
374/131

With radiation conducting element

321
374/132

Sensor or mounting temperature control

94
374/123

Transparent material measurement or compensation (e.g., spectral line, gas, particulate suspension

54
374/125

With fluid flow purging device

36
374/124

With scanning or temperature distribution display

260
374/134

Extrapolation (e.g., simulation, heat flow)

91
374/187

Mechanical (e.g., expansion or contraction of materials)

47
374/205

Compound sensing element (e.g., bimetallic)

66
374/206

Coil

25
374/207

Helix

13
374/201

Expanding fluid

31
374/203

Bourdon tube or bellows

26
374/202

With distinct pressure transmitting fluid

5
374/188

Having electrical indication

30
374/190

Indicating tube type

30
374/193

Having specified cross section

7
374/192

With holder for shaking

1
374/191

With optical element (e.g., magnifying)

5
374/194

With support or housing

44
374/204

Multiple distinct sensing elements

10
374/196

One sensing element within another

4
374/189

Plural zones (e.g., indoor-outdoor)

6
374/198

With adjustment

16
374/200

Adjustment of limit stop

6
374/199

Mechanical loading of sensor

4
374/197

With compensation

6
374/195

With detail of motion transmitting mechanism

13
374/159

Nonelectrical, nonmagnetic, or nonmechanical temperature responsive property

84
374/161

Change of optical property

431
374/162

Color

320
374/160

Melting or softening

140
374/139

Of molten metal

115
374/140

Lance (e.g., consumable)

88
374/137

Temperature distribution or profile

384
374/138

With fluid flow deflector

86
374/158

With removable cover for sensor (e.g., disposable sheath)

147
374/186

With specified recording arrangement

52
374/1

Thermal calibration system

431
374/3

By immersion in liquid having controlled temperature

36
374/2

By thermal radiation emitting device (e.g., blackbody cavity)

104
374/14

Thermal gravimetric analysis

108
374/45

Thermal testing of a nonthermal quantity

445
374/55

Expansion or contraction characteristics (e.g., dilatometry)

86
374/56

Including electrical sensor

36
374/53

Of cure or hardenability

42
374/54

Of fluid volume

86
374/57

Of susceptibility to thermally induced deteriouration, flaw, or failure

294
374/46

With loading of specimen (e.g., stress or strain)

48
374/52

Bending or flexing

7
374/51

Compressional

27
374/47

Cyclic

30
374/48

Torsional

11
374/49

Tensile

26
374/50

With detail of heating or cooling structure

26
374/16

Transformation point determination (e.g., dew point, boiling point)

130
374/27

Between gaseous and liquid states

48
374/28

Dew point

76
374/22

By change in motion of movable element

10
374/23

Driven element

17
374/17

By change in optical property (e.g., transmission)

48
374/18

By reflection (e.g., polished surface)

16
374/19

Sensed by instrument (e.g., photocell)

20
374/20

Controlling heating or cooling

59
374/24

By change in pressure of flow rate

22
374/21

By electrical condition of specimen

23
374/25

By thermal arrest (e.g., time-temperature curve)

49
374/26

Of molten metal (e.g., carbon content)

27
 
 
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