US PATENT SUBCLASS 137 / 880
.~.~.~.~ With threaded actuator

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

561 R  DF  SYSTEMS {32}
861  DF  .~ With flow control means for branched passages {8}
877  DF  .~.~ Biased valved {1}
878  DF  .~.~.~ Spring bias {3}
880.~.~.~.~ With threaded actuator

DEFINITION

Classification: 137/880

With threaded actuator:

(under subclass 878) System wherein the means to actuate the

fluent material flow control means has a helical rib by which the actuating means reciprocates as a result of rotary motion applied thereto.