US PATENT SUBCLASS 91 / 12
.~ Cyclically operable motor with port reversing

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

6  DF  FLUID SUPPLY THROUGH DIVERSE PATHS TO SINGLE EXPANSIBLE CHAMBER {12}
12.~ Cyclically operable motor with port reversing {3}
13  DF  .~.~> By shifting distributor seat
14  DF  .~.~> By shifting distributor
15  DF  .~.~> Selector valve between distributor and motor

DEFINITION

Classification: 91/12

(under subclass 6) Apparatus comprising a cyclically operable motor and motive fluid distributing valve means operated incident to the operation of the motor for causing the cyclic operation and means for reversing the motive fluid flow to and from the motor for a given position of the motor.

(1) Note. For the definition of a cyclically operable motor see the definition of subclass 218 of this class.

(2) Note. The means for reversing the motive fluid flow causes the motive fluid to flow to a given chamber through different paths for the two conditions of operation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

30, for expansible chamber motors of other than the cyclically operable type having serially arranged reversing valves.