US PATENT SUBCLASS 303 / 74
.~.~.~ Graduated

Current as of: June, 1999
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303 /   HD   FLUID-PRESSURE AND ANALOGOUS BRAKE SYSTEMS

*  DD  RELEASING {3}
68  DF  .~ Motor {5}
72  DF  .~.~ Delayed {2}
74.~.~.~ Graduated

DEFINITION

Classification: 303/74

Means for repeatedly placing the equalizing-valve in release position, then returning it to lap or blanked position, in this way releasing the motor by steps.