US PATENT SUBCLASS 91 / 270
.~.~ Inlet and exhaust valve movable about an axis

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

218  DF  CYCLICALLY OPERABLE {34}
265  DF  .~ Relatively movable inlet and exhaust valves {6}
270.~.~ Inlet and exhaust valve movable about an axis

DEFINITION

Classification: 91/270

(under subclass 265) Apparatus in which the inlet and exhaust valve means are each movable about an axis to cyclically control inlet and exhaust flow of motive fluid to and from a motor working chamber.