US PATENT SUBCLASS 92 / 185
.~.~.~.~ Passages communicate with common packing receiving recess


Current as of: June, 1999
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92 /   HD   EXPANSIBLE CHAMBER DEVICES

172  DF  PISTON {19}
181 R  DF  .~ With fluid passage in piston face {2}
182  DF  .~.~ Passage communicates with packing receiving recess {2}
184  DF  .~.~.~ Passage in opposed piston faces {1}
185.~.~.~.~ Passages communicate with common packing receiving recess


DEFINITION

Classification: 92/185

(under subclass 184) Apparatus in which the ports or passages in the opposed end faces communicate with the same cavity.