US PATENT SUBCLASS 91 / 211
.~.~ Cooperating valve ports in cylinder and fixed member

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

196  DF  MOVING CYLINDER {4}
210  DF  .~ Oscillating cylinder {2}
211.~.~ Cooperating valve ports in cylinder and fixed member {3}
212  DF  .~.~.~> Ported end bearing
213  DF  .~.~.~> Ported trunnion
214  DF  .~.~.~> Ported arcuate slide face on which cylinder moves

DEFINITION

Classification: 91/211

(under subclass 210) Apparatus comprising a stationary member on which the cylinder moves during oscillation, the stationary member having ports therein through which motive fluid is conveyed, and the cylinder having ports aligning with the ports in the stationary member to valve the motive fluid.