US PATENT SUBCLASS 91 / 197
.~ Plural rigidly connected rotary cylinders


Current as of: June, 1999
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91 /   HD   MOTORS: EXPANSIBLE CHAMBER TYPE

196  DF  MOVING CYLINDER {4}
197.~ Plural rigidly connected rotary cylinders


DEFINITION

Classification: 91/197

(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.