US PATENT SUBCLASS 418 / 245
.~.~ In opposite directions

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

243  DF  POSITIVELY ACTUATED ABUTMENT {4}
244  DF  .~ Cam actuated {2}
245.~.~ In opposite directions

DEFINITION

Classification: 418/245

(under subclass 244) Apparatus wherein the abutment is moved in each direction by the coacting elements.