US PATENT SUBCLASS 251 / 21
.~.~ Actuator connection released on opening of cut-off valve

Current as of: June, 1999
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251 /   HD   VALVES AND VALVE ACTUATION

12  DF  FLUID ACTUATED OR RETARDED {12}
15  DF  .~ Compulsory cut-off after flow period {6}
21.~.~ Actuator connection released on opening of cut-off valve

DEFINITION

Classification: 251/21

(under subclass 15) Subject matter in which coacting elements of the external actuating means for the valve are so related

to each other that they transmit an opening motion to the valve, but upon the valve attaining its open position the co-acting elements are sufficiently disengaged as to permit the valve reclosing under the action of the fluid actuating or retarding means even if the opening force on the external means is maintained.