Valves and valve actuation

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251

SECTION I - CLASS DEFINITION

This class provides for means, for regulating flow of a fluid through a passage, either by closing the passage or restricting it by a definite predetermined motion of the closing-element, that are of general application not otherwise provided for.

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Subclass

Title

129.11

Rotary electric actuator

520 Patents

Ventilation damper control system

Valve driving device

Exhaust gas recirculating valve device

Throttle actuator

Damper including a stepper motor

Flow control device

Rate of flow control valve

Linear valve actuator

Air control damper assembly

Rotary servovalve and control system

Self-operated air register damper

Motor driven value

Electric-powered spring-return actuating device

Spring return electric actuator

144

Tank

338 Patents

Drain device of automotive radiator

Self-venting drain value assembly

Tank distribution take-away system

Tank truck safety valve

Dump valve assembly

Air activated internal valve

Manifold-valve structure

Vaneless rotary airlock valve

Bottom-of-vat valve

Internal tank valve

Fluid delivery valve

174

Spring

260 Patents

Seat structure of valves

Dual seal ball valve

Ported gate valve

Sealing assembly for valve member

Isolation valve assembly

Metering device for fluids

Bimetallic C-ring seal

Electronic motorized zone valve

282

Reciprocating

337 Patents

Electromagnetic actuator

Pulse-width-modulated solenoid valve

Valve and control therefor

Servo piston valve

Pressure balanced three-way transfer valve

Combination face and plug seal

Pilot operated relief valve

Hydraulic powered gate valve

Flow rate control system

Automatic levelling system

Balanced-spotter valve

Holding check control valve

Backflow prevention devices

305

Butterfly

375 Patents

Butterfly valve body

Pipeline valve apparatus

Throttle valve control device

Injection molded throttle body

Pivotable joint

Rotating blade fire damper

Rotatable valve assembly

Butterfly valves

Valve shaft end float control

Servo butterfly valve and vane

Butterfly valve

Clamshell throttle valve assembly

Metal seal for valve

368

Materials

599 Patents

Silicon carbide valve elements

Valve provided with sound-reducing means

Two-way pressure relief valve

Field adjustable pilot guard

Rotary plug valve

Pressure reducer

Miniature check valve construction

1.1

BLOW-OUT PREVENTERS (I.E., COOPERATING SEGMENTS OF ANNULUS)

70 Patents

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1.2

Deformable annulus

73 Patents

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1.3

Radial reciprocating ram

152 Patents

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3

PATTERN TRACER CONTROLLED ACTUATOR

4 Patents

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4

TUBE COMPRESSORS

188 Patents

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5

Fluid pressure actuated

193 Patents

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6

Roller tube contacting element

86 Patents

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7

Perpendicularly reciprocating tube contacting element

246 Patents

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8

Screw actuated

56 Patents

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9

Pivoting tube contacting element

170 Patents

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10

U-shaped resilient bar or rod

46 Patents

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11

HEAT OR BUOYANCY MOTOR ACTUATED

300 Patents

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12

FLUID ACTUATED OR RETARDED

29 Patents

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14

Fluid and non-fluid actuators

153 Patents

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15

Compulsory cut-off after flow period

16 Patents

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16

Serial main line cut-off and manual valves (e.g., hydraulic "fuses")

20 Patents

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17

Interconnected motion

1 Patent

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18

Manual and pilot valves

3 Patents

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19

Auxiliary pilot valve overrides a first pilot valve

0 Patents

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