US PATENT SUBCLASS 303 / 81
.~ Control pipe

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

*  DD  RELEASING {3}
81.~ Control pipe {2}
82  DF  .~.~> By action of control-pipe pressure
83  DF  .~.~> To chamber

DEFINITION

Classification: 303/81

Means for releasing fluid-pressure from the control-pipe.

(1) Note. Devices for controlling the release to the extent of stopping it are also included in this subclass.