US PATENT SUBCLASS 303 / 38
.~.~.~ Service

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

28  DF  AUTOMATIC {13}
35  DF  .~ Synchronizing {2}
37  DF  .~.~ Quick action {2}
38.~.~.~ Service

DEFINITION

Classification: 303/38

Devices designed to produce a simultaneous application of fluid to the motors of a series, the method being to secure a momentary exhaust of fluid from the control-pipe through the equalizing-valve as the control-pipe pressure is lowered for a service operation.