(under the class definition) Apparatus comprising a working member having a pair of axially spaced end faces, and a portion located between and rigidly secured to said end faces, said portion having means formed thereon to engage with a mechanical motion converting linkage or power transmission member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
74, for a plurality of relatively movable working members, each working member having spaced end faces and a rotating shaft engaging portion intermediate said end faces, said working members being positioned side by side in parallel relationship.
SEE OR SEARCH CLASS
91, Motors: Expansible Chamber Type,
174, for a plurality of relatively movable working members, each working member having spaced end faces and a linkage or transmission engaging means intermediate said spaced end faces.
