(under subclass 418) Apparatus including means to actuate the valve means to a given position and separate means to hold the valve means in said position by the application of fluid pressure to the separate means.
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.
425, for expansible chamber motors having two hand control valve means with motor controlled fluid holding means for said valve means.
