.~ Expanding chamber inlet controlled by contracting chamber pressure or flow
DEFINITION
Classification: 91/421
(under subclass 418) Apparatus in which the motor is provided with a first chamber which is expanded by pressure motive fluid acting therein and a second chamber which is contracted and from which motive fluid is exhausted due to the expansion of said first chamber, the flow of motive fluid into the expanding chamber being controlled by valve means which is responsive to the motive fluid pressure in or flow from said contracting chamber.
(1) Note. See Notes (1) and (2) under subclass 420 which also apply to this subclass.
