US PATENT SUBCLASS 192 / 3.59
.~.~.~.~ Vacuum operated

Current as of: June, 1999
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192 /   HD   CLUTCHES AND POWER-STOP CONTROL

3.51  DF  TRANSMISSION CONTROL AND CLUTCH CONTROL {3}
3.54  DF  .~ Common control {2}
3.55  DF  .~.~ Power-operated clutch {2}
3.57  DF  .~.~.~ Fluid-press operated {2}
3.59.~.~.~.~ Vacuum operated

DEFINITION

Classification: 192/3.59

(under subclass 3.57) Device including provision to reduce the pressure on a portion of one of the members (or structure connected thereto) so that atmospheric pressure serves to moves that member relatively to the other member.