.~ Contracting chamber exhaust valve controlled by expanding chamber pressure or flow
DEFINITION
Classification: 91/420
(under subclass 418) Apparatus in which the motor has 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 the first chamber, the exhaust from the contracting chamber being controlled by valve means which is operated by the pressure of motive fluid in or the flow of motive fluid to said expanding chamber.
(1) Note. This subclass includes patents which disclose rotary expansible chamber motors but are not claimed as such.
(2) Note. This subclass does not include patents in which the expanding and contracting chambers are disclosed as associated with plural relatively movable working members since such patents are provided for above in subclasses 170+ and 411+.
SEE OR SEARCH THIS CLASS, SUBCLASS:
268, for cyclically operable expansible chamber motors in which the exhaust valve for one chamber is closed or held closed by inlet pressure in an opposing chamber.
