US PATENT SUBCLASS 192 / 87.19
.~.~.~.~.~.~ Having neutral position

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

30 R  DF  CLUTCHES {15}
82 R  DF  .~ Operators {18}
85 R  DF  .~.~ Fluid pressure {11}
87.1  DF  .~.~.~ Multiple clutches {2}
87.14  DF  .~.~.~.~ Alternatively operative clutches {2}
87.18  DF  .~.~.~.~.~ With selective distributor for fluid pressure {1}
87.19.~.~.~.~.~.~ Having neutral position

DEFINITION

Classification: 192/87.19

(under subclass 87.18) Device wherein the unit can be caused to apply no pressure to the actuator for either clutch.

(1) Note. Included herein are patents disclosing use of the neutral position of a multiway valve for relieving residual pressure in the actuators of both clutches at the same time.