US PATENT SUBCLASS 137 / 630.22
.~.~.~ First valve actuates second valve

Current as of: June, 1999
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137 /   HD   FLUID HANDLING

561 R  DF  SYSTEMS {32}
628  DF  .~ Sequentially progressive opening or closing of plural valves {4}
630.19  DF  .~.~ Lost motion {3}
630.22.~.~.~ First valve actuates second valve

DEFINITION

Classification: 137/630.22

(under subclass 630.19) Systems in which a subsequently

operated valve is actuated by being contacted by the first or prior actuated valve, but not by the prior valve's actuator.