US PATENT SUBCLASS 251 / 213
MECHANICAL MOVEMENT ACTUATOR

Current as of: June, 1999
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251 /   HD   VALVES AND VALVE ACTUATION

213MECHANICAL MOVEMENT ACTUATOR {10}
214  DF  .~> Particularly packed or sealed
215  DF  .~> Plural motions of valve {5}
228  DF  .~> With pivoted valves
229  DF  .~> Plural dissimilar mechanical movements
230  DF  .~> Ratchet
231  DF  .~> Lever {5}
248  DF  .~> Gear {4}
251  DF  .~> Cam {3}
264  DF  .~> Screw {5}
279  DF  .~> Linkage {1}

DEFINITION

Classification: 251/213

(under the class definition) Subject matter wherein a valve is actuated by mechanical movement means, i.e., means comprising two or more fixed and movable parts so combined that the motion of one compels or completely controls or constrains motion of the other according to a law of operation inherent in and depending on the nature of the combination.

SEE OR SEARCH THIS CLASS, SUBCLASS:

58, for mechanical movements between a fluid pressure actuator and a valve.

66+, for biased trip valves and see the search notes thereto.

74, for mechanical movements to actuate a biased trip mechanism.

75, for snap actuated mechanisms for valve actuation.

76, for valve actuators comprising impact devices. 77+, for valve actuators in which lost motion is inherent.

294, for flexible actuators, as Bowden wires and chains.

295, for pedal actuators for valves.

336+, for biased valves.

340, 341+ and 349+, for actuators which are a part of the flow line.

SEE OR SEARCH CLASS

74, Machine Element or Mechanism, appropriate subclasses, for mechanical movements, per se.

137, Fluid Handling,

434+, for float arm operated valves, subclass 513 for plural mechanically interconnected safety or check valves and subclass 625+ for cyclic and sequential actuators for valves, which may include a mechanical movement.

222, Dispensing,

505+, for relatively movable actuators for dispenser valves. 267, Spring Devices,

123, for a fluid spring device of the diaphragm type, useful in valve actuation.