(under subclass 196) Apparatus comprising a plurality of working chambers formed by rigidly connected cylinders mounted for continuous rotation in a single direction about a fixed or movable axis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
183+, for patents on expansible chamber motors some of which have plural rigidly connected stationary cylinders not acting
as working members.
472+, for motors having three or more cylinders arranged in parallel, radial, or conical relationship with a rotary transmission axis.