(under subclass 6) Apparatus wherein when motive fluid is supplied to a working chamber through one supply path another motive fluid supply path to said chamber is inactivated and does not supply motive fluid to the chamber when said one supply path is active.
(1) Note. Under this definition the two supply paths must be separate, i.e., one supply path may not include two simultaneous flow lines and the other comprise one of said lines as set forth in (1) Note of subclass 6.
