US PATENT SUBCLASS 137 / 565.15
.~.~.~.~ Direct response valve


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

561 R  DF  SYSTEMS {32}
565.01  DF  .~ With pump {11}
565.11  DF  .~.~ Pumped fluid control {3}
565.13  DF  .~.~.~ Fluid pressure responsive {2}
565.15.~.~.~.~ Direct response valve


DEFINITION

Classification: 137/565.15

Direct response valve:

(under subclass 565.13) Subject matter including (a) a valve head having a face and (b) a nonreturn element wherein the nonreturn element is responsive to pressure of a line fluid. [figure] [caption]Figure 1: A typical example of the subject matter. A - Discharge; B - Tank or reservoir; C - Outlet hose assembly; D - Inlet; E - Inlet valve; F - Flexible hose; G - Check valve; P - Pump.

SEE OR SEARCH THIS CLASS, SUBCLASS:

511+, for a direct response check valve.

SEE OR SEARCH CLASS

210, Liquid Purification or Separation,

136, for a fluid pressure or material level responsive flow control system including a check valve.