US PATENT SUBCLASS 91 / 425
.~.~ With motor-controlled holding means for valve


Current as of: June, 1999
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91 /   HD   MOTORS: EXPANSIBLE CHAMBER TYPE

418  DF  WITH MOTIVE FLUID VALVE {32}
424  DF  .~ Two hand control {1}
425.~.~ With motor-controlled holding means for valve


DEFINITION

Classification: 91/425

(under subclass 424) Apparatus including means responsive to an operating condition of the motor for permitting the motor to continue to operate upon release of either or both hands of the operator.

SEE OR SEARCH THIS CLASS, SUBCLASS:

301, and 337, for cyclically operable expansible chamber motors in which fluid is supplied to a chamber subsequent to movement of the distributor to reversed position to hold the distributor in such position.

392+, for expansible chamber motor valve means which responds to working member position.

426, for expansible chamber motor valves having subsequently applied fluid means to hold the valve in the position to which it had previously been shifted.