US PATENT SUBCLASS 60 / 569
.~.~.~ Distinct externally operable valve sealing pulse fluid in slave


Current as of: June, 1999
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60 /   HD   POWER PLANTS

325  DF  PRESSURE FLUID SOURCE AND MOTOR {47}
533  DF  .~ Pulsator {25}
568  DF  .~.~ Having distinct means for holding a pulsator element in set position {2}
569.~.~.~ Distinct externally operable valve sealing pulse fluid in slave


DEFINITION

Classification: 60/569

(under subclass 568) Apparatus in which the securing means is a separate externally operable valve that prevents flow into or out of the slave.

SEE OR SEARCH CLASS

137, Fluid Handling,

598, for a hydraulic brake line with a valve to trap a column of liquid in the line having no structure specializing the system to brakes.

188, Brakes,

353, for a fluid pressure brake for a vehicle having means to trap fluid in the brake system to hold the brakes applied.

303, Fluid-Pressure and Analogous Brake Systems, 75+, for a fluid brake system having a valve for preventing release of the brakes and subclass 89 for a fluid brake system including a lock for maintaining parts in position of application or release.