.~.~ Working member formed to provide internal fluid flow passage
DEFINITION
Classification: 91/234
(under subclass 232) Apparatus in which a fluid flow path for cyclically admitting or exhausting motive fluid to or from an expansible chamber of the motor includes a fluid flow passage formed, at least in part, by a passage entirely within the motor working member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
233, for valveless cyclically operable expansible chamber motors of the reciprocating type, in which the working member is formed to provide a fluid flow passage and the working member is rotated or oscillated about its own axis to move said passage into and out of communication with another fluid flow passage to open and close a fluid flow path.
