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Class Information
Number: 137
Name: Fluid handling >
Description: This is the residual class for fluid material handling, and takes processes, systems, combinations, subcombinations and certain elements pertaining thereto not otherwise classified.


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Class Number Class Name No. of Patents
137/78.1

Ambient condition change responsive

31
137/78.5

Atmospheric

24
137/81.1

Pressure

57
137/79

Temperature

170
137/80

With additional diverse control

65
137/78.4

Burner gas cutoff

21
137/78.2

For controlling soil irrigation

58
137/78.3

Soil moisture sensing

127
137/81.2

Underwater

42
137/215

Back flow prevention by vacuum breaking (e.g., anti-siphon devices)

15
137/216

Air vent in liquid flow line

94
137/217

Valved

50
137/218

With co-acting valve in liquid flow path

229
137/216.1

With liquid seal in liquid flow line

17
137/216.2

Automatic valve in vent line

11
137/901

Biased ball valves with operators

116
137/900

Bumpless manual to automatic relays

1
137/560

Combined

93
137/65

Combustion failure responsive fuel safety cut-off for burners

23
137/66

Thermo-electric

74
137/38

Control by change of position or inertia of system

221
137/45

By pendulum or swinging member

62
137/46

With servo connection to valve

11
137/44

By shifting of liquid level

18
137/40

Position relative body of water (e.g., marine governors)

1
137/41

Float controlled

5
137/42

Pressure or head controlled

6
137/43

Vent opening or closing on tipping container

302
137/39

With second control

129
137/269

Convertible

306
137/269.5

Reversible check

30
137/270

Unit orientable in a single location between plural positions

222
137/270.5

Reversible stop and vent or waste

3
137/271

Units interchangeable between alternate locations

210
137/904

Cushion check valves

22
137/910

Destructible or deformable element constructed of specific material

58
137/67

Destructible or deformable element controlled

93
137/68.11

Destructible element

107
137/68.12

Combined destructible and fusible element

18
137/68.13

Explosive actuation

121
137/70

Frangible element returns pressure responsive valve

82
137/71

Having pressure responsive valve

132
137/68.19

Rupture disc

74
137/68.23

Direct pressure causes disc to burst

115
137/68.25

Dome shape

46
137/68.26

Reverse buckling

63
137/68.24

Two-way rupture disc

19
137/68.22

Disc burst after destruction of additional element

27
137/68.28

Integral disc assembly

39
137/68.29

Knife or cutter causes disc to break

47
137/68.3

Movable knife or cutter

57
137/68.21

Means for holding entire disc after rupture

26
137/68.27

Specific weakening point

83
137/68.14

Separable valve coupling or conduit

110
137/68.15

Tensile or sheer pin or bolt

44
137/68.16

Tensile or sheer pin or bolt

20
137/68.17

Pressure causes pin or bolt to destruct

17
137/68.18

With alarm or indicator

31
137/69

With counterbalancing element

25
137/72

Heat destructible or fusible

150
137/74

In fluid flow path

131
137/75

Safety cut-off

137
137/77

With external closing means

46
137/76

With heater for destructible or fusible element

17
137/73

With second sensing means

52
137/236.1

Distribution systems involving geographic features

224
137/154

Diverse fluid containing pressure systems

30
137/171

Fluid separating traps or vents

54
137/197

Discriminating outlet for gas

41
137/199

Fluid sensing valve

50
137/202

Float responsive

408
137/200

With vaporized liquid stop

3
137/201

With separate return for condensate

3
137/198

With reverse flow stop or pressure regulating valve

15
137/177

Discriminating outlet for liquid

33
137/178

With alternately operated inlet and outlet valves

4
137/182

With auxiliary inlet or by-pass valve

11
137/183

With fluid responsive valve

40
137/185

Gas collecting float (e.g., inverted bucket)

18
137/186

Downstream from valve

2
137/187

Level responsive

20
137/192

Float

96
137/195

Servo-control

30
137/193

With main line gas outlet from trap chamber

3
137/194

With outlet extending above liquid in trap

6
137/196

With pressure balanced outlet valve

6
137/188

Weight or pressure

9
137/189

Gravitating vessel

2
137/190

Sinking or bucket type float

3
137/191

Servo-control

1
137/184

Successively opened valves

5
137/179

With non-discriminating gas vent or liquid discharge

12
137/180

Abnormal pressure responsive liquid blow-off or drain

0
137/181

Manual control

13
137/172

Liquids separated from liquid

70
137/173

Plural discriminating outlets for diverse fluids

17
137/175

Choke or restricted passage gas bleed

6
137/176

From above liquid level

5
137/174

Common actuator for control valves

10
137/203

With liquid emptying means

32
137/204

Self-emptying

59
137/170.1

Foam control in gas charged liquids

15
137/170.2

Level or pressure responsive

7
137/170.3

Separate handling of foam

3
137/170.4

With conditioning trap or chamber

2
137/170.5

Recarbonation

0
137/170.6

With trap or chamber by-pass

1
137/155

Gas lift valves for wells

61
137/156

Gas pressure discharge of liquids feed traps (e.g., to boiler)

3
137/159

Gas pressure controlled by amount of liquid in trap

0
137/165

Float responsive

3
137/167

Gas condensing type

2
137/168

Gas inlet and outlet valves unitary

0
137/166

Liquid control valve positively actuated

1
137/162

Gravitating vessel

0
137/164

Pivoted vessel with fluid passage through pivot

0
137/163

Sinking or bucket type float

1
137/160

Plural trap chambers

0
137/161

Gravitating

0
137/157

Gas pressure controlled by amount of liquids in boiler or discharge receiver

0
137/158

Pressure connection at liquid level in boiler or discharge receiver

3
137/169

Gas pressure controlled by manual or cyclic means

1
137/170

Movable trap chamber

1
137/206

Gas pressure storage over or displacement of liquid

37
137/208

Plural units

43
137/207

Surge suppression

61
137/209

With gas maintenance or application

217
137/210

Gas carried by or evolved from liquid

39
137/211

Gas injectors

10
137/211.5

Gas injected by liquid pressure or flow

7
137/212

Unitary mounting for gas pressure inlet and liquid outlet

107
137/213

With liquid level responsive gas vent or whistle

2
137/214

Combined high and low level responsive

3
137/207.5

With return of liquid to supply

7
137/205

Liquid filling by evacuating container

235
137/205.5

Main line flow displaces additive from shunt reservoir

47
137/801

Faucets and spouts

392
137/803

Flow affected by fluid contact, energy field or coanda effect (e.g., pure fluid device or system)

29
137/842

Device including linearly-aligned power stream emitter and power stream collector

42
137/841

Device including passages having v over gamma configuration

10
137/834

Device including passages having v over t configuration

10
137/839

And enlarged interaction chamber

8
137/835

And feedback passage(s) or path(s)

53
137/838

And multiple or joined power-outlet passages

5
137/840

And vent passage(s)

23
137/836

With particular characteristics of control input

17
137/837

Multiple control-input passages

6
137/808

Means to cause rotational flow of fluid (e.g., vortex generator)

34
137/812

By tangential input to axial output (e.g., vortex amplifier)

40
137/813

With means to vary input or output of device

50
137/809

Plural vortex generators

29
137/810

Vortex generator as control for system

63
137/811

Vortex generator in interaction chamber of device

34
137/825

Means to regulate or vary operation of device

21
137/829

By movable element

35
137/831

Electrically-actuated element (e.g., electro-mechanical transducer)

52
137/832

Means (e.g., valve) in control input

18
137/830

Operating at timed intervals (e.g., to produce pulses)

8
137/827

By non-fluid energy field affecting input (e.g., transducer)

87
137/828

Acoustical or thermal energy

93
137/826

To vary frequency of pulses or oscillations

57
137/822

Plural power inputs to single device

8
137/823

Intersecting at interaction region (e.g., comparator)

3
137/824

Co-lineal, oppositely-directed power inputs (e.g., impact modulator)

12
137/804

Responsive to condition external of system

30
137/805

And causing change or correction of sensed condition

30
137/833

Structure of body of device

168
137/814

System comprising plural fluidic devices or stages

21
137/815

Plural power inputs (e.g., parallel inputs)

5
137/819

To cascaded plural devices

21
137/820

With feedback passage(s) between devices of cascade

12
137/821

With pulsed control-input signal

8
137/816

Variable or different-value power inputs

3
137/817

Pulsating power input and continuous-flow power input

0
137/818

With variable or selectable source of control-input signal

8
137/806

Utilizing diverse fluids

59
137/807

Utilizing particular fluid

65
137/797

Frangible

87
137/59

Freeze condition responsive safety systems

78
137/62

Low temperature responsive drains

91
137/61

Stop and waste

10
137/60

With freeze waste

18
137/15.1

Highspeed fluid intake means (e.g., jet engine intake)

121
137/15.2

With condition responsive control means

31
137/272

Hydrant type

36
137/289

Balanced valve

2
137/281

Expansible chamber operated by valve actuator for draining riser

13
137/286

Movable riser actuated valve

1
137/287

Reciprocating riser

4
137/288

Piston type valve

4
137/280

Plural riser

0
137/301

Protection against freezing

51
137/302

Stop and waste

16
137/307

Reciprocating relatively fixed valves

16
137/308

Waste through lower valve guide

0
137/304

Separate relatively movable valves with single actuator

2
137/305

Unidirectional abutting connection between main valve or actuator and waste valve

3
137/306

With screw or gear in actuating mechanism

0
137/303

With disabling means

0
137/283

Removable valve and valve seat

10
137/284

With extension to facilitate removal

0
137/285

Removable valve with supplemental check valve

4
137/290

Valve actuator extends laterally from bottom of riser

0
137/291

Valve actuator outside riser

8
137/292

Lever actuator

7
137/293

With casing, flush with ground or pavement surface

1
137/273

Water crane type

0
137/278

Extensible spout

1
137/275

Rotating riser

0
137/276

Spout articulated to riser

0
137/277

Vertically movable riser

0
137/279

Spout articulated to riser

0
137/274

Spout operated valve

2
137/298

With actuator lubricating means

5
137/294

With casing

7
137/296

Cap, cover or hood

79
137/295

Flush with ground or pavement surface

3
137/297

With heater

6
137/282

With pump or ejector

12
137/300

With supplemental valve

6
137/299

With valve at outlet

10
137/223

Inflatable article (e.g., tire filling chuck and/or stem)

251
137/234.5

Removable valve head and seat unit (valve insides)

30
137/230

Stem attached relief valve

24
137/232

With cap

50
137/233

Valve actuating, assembling or locking means on cap

17
137/234

Valve manually seated

6
137/231

With coupling means

88
137/227

With gauge or indicator

71
137/229

Selectively connected

9
137/228

With deflating means

27
137/224

With pressure-responsive pressure-control means

96
137/226

Co-axial inflation and relief valves

35
137/225

Diaphragm, bellows or expansible tube

30
137/224.5

Pulsating

5
137/219

Larner-johnson type valves; i.e., telescoping internal valve in expanded flow line section

87
137/221

Internal servo-motor with internal pilot valve

6
137/222

Pilot controlled passage in nose or needle

4
137/220

Line condition change responsive

43
137/455

Line condition change responsive valves

20
137/493

Bi-directional flow valves

166
137/493.9

Axes of ports co-axial

163
137/493.8

Axes of ports parallel

126
137/493.7

Axes of ports perpendicular

30
137/493.1

One head and seat carried by head of another

30
137/493.6

Both valves spring biased

58
137/493.2

Supporting valve only spring biased

37
137/493.3

Supporting valve spring carried by supporting valve

56
137/493.5

Spring abuts guide for supported valve stem

13
137/493.4

Spring stop on supported valve stem

25
137/479

Combustion engine induction type

3
137/484

Unbalanced pivoted valve (e.g., unbalanced butterfly type)

1
137/480

Valve in auxiliary inlet to induction line

20
137/481

With manual modifier

1
137/483

With separate reactor surface

2
137/482

With suction compensator

1
137/467.5

Consistency responsive

16
137/511

Direct response valves (i.e., check valve type)

23
137/517

Biased open

220
137/518

Oppositely swinging vanes

6
137/521

Pivoted valves

62
137/519

Weight biased

40
137/519.5

Ball valves

88
137/520

Edge pivoted valve

6
137/515

In couplings for coaxial conduits, e.g., drill pipe check valves

53
137/515.7

Valve seat clamped between coupling elements

79
137/515.5

Valve seat formed on or carried by a coupling element

79
137/515.3

Valve seat threaded into a coupling element

7
137/527

Pivoted valves

253
137/527.2

Head retained by removable closure

24
137/527.4

Valve head movably connected for accommodation to seat

63
137/527.6

Valve mounted on end of pipe

61
137/527.8

Weight biased

246
137/516.25

Plural seating

58
137/516.27

Sequential

59
137/516.29

Resilient gasket

107
137/512

Plural

217
137/512.3

Diverse types

130
137/512.1

Dividing and recombining in a single flow path

251
137/512.15

Integral resilient member forms plural valves

205
137/512.4

Integral resilient member forms plural valves

125
137/513

Mechanically interconnected

29
137/512.2

One valve carries head and seat for second valve

73
137/512.5

With common biasing means

46
137/528

Reciprocating valves

87
137/530

Cam means for adjusting and fixing bias

24
137/529

Plural biasing means

148
137/535

Spring biased

55
137/539

Ball valves

153
137/539.5

With follower

71
137/538

Piston-type valves

131
137/540

Spring coaxial with valve

237
137/540.11

Broken valve parts retainer

1
137/543.19

Cage-type guide for stemless valves

79
137/543.21

Guide means integral and coplanar with valve disk

57
137/543.23

Head between spring and guide

69
137/543.15

Head slides on guide-rod concentric with spring

64
137/543.13

Spring abuts removable valve stem guide

48
137/543.17

Spring guides valve head

77
137/541

Spring in inlet

112
137/542

Valve stem extends through fixed spring abutment

106
137/543

Yoke or cage-type support for valve stem

44
137/537

Spring under tension

27
137/536

With means to protect spring from fluid

62
137/531

Varying effective lever arm

7
137/532

Weight biased

9
137/533

Valve body is the weight

38
137/533.11

Ball valves

144
137/533.13

Removable cage

30
137/533.15

Separable seat

43
137/533.17

Guided head

59
137/533.19

Cage

35
137/533.21

Guide stem

34
137/533.31

Guide and closure integral unit

37
137/533.29

Guide and seat integral unit

16
137/533.27

Head slidable on guide rod

30
137/533.25

Oppositely disposed

22
137/533.23

With closing stop

6
137/534

Weight coaxial with valve

21
137/843

Resilient material valve

144
137/860

Annulus

76
137/851

Center flexing strip

15
137/844

Having expansible port

55
137/845

Apertured plate

47
137/846

Having exit lip

162
137/850

Internally extending mount

26
137/849

Multiple slit

80
137/848

Side vent

16
137/847

With biasing means

37
137/852

With valve member flexing about securement

81
137/854

Central mount

227
137/855

Flap or reed

254
137/857

With spring

52
137/856

With stop

166
137/858

With weight

8
137/859

Peripherally secured diaphragm

173
137/853

Sleeve

112
137/516.11

Single head, plural ports in parallel

39
137/516.15

Annular head

49
137/516.17

Central post on seat

16
137/516.23

Guide

12
137/516.19

Stop

7
137/516.21

With guide

24
137/516.13

Concentric ports

34
137/526

Vacuum relief type

116
137/524

With bias adjustment indicator

20
137/522

With external means for opposing bias

139
137/523

With means for retaining external means in bias opposing position

56
137/513.3

With leak passage

133
137/513.7

Bypass in valve casing

67
137/513.5

Permits flow at valve interface

118
137/516

With means for selecting area of valve or seat

4
137/514

With retarder or dashpot

133
137/514.3

End of valve forms dashpot chamber

37
137/514.5

End of valve moves inside dashpot chamber

71
137/514.7

Enlarged piston on end of valve stem

64
137/467

Fluid opened valve requiring reset

72
137/484.2

Line flow effect assisted

31
137/484.4

Reactor surface normal to flow

21
137/484.6

Reactor surface separated from flow by apertured partition

11
137/484.8

Through separate aperture

20
137/485

Pilot or servo controlled

9
137/487.5

Electrically actuated valve

674
137/488

Fluid pressure type

166
137/489

Choked or throttled pressure type

183
137/491

Choked passage through main valve head

97
137/489.3

Loose fitting piston

6
137/489.5

Pilot controls supply to pressure chamber

75
137/490

Pilot valve within main valve head

23
137/492

Single acting fluid servo

77
137/492.5