US PATENT SUBCLASS 137 / 115.18
.~.~.~.~ Bypass or relief valve responsive to pressure downstream of outlet valve

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

87.01  DF  SELF-PROPORTIONING OR CORRELATING SYSTEMS {8}
109  DF  .~ Self-controlled branched flow systems {4}
115.01  DF  .~.~ Bypass or relief controlled by main line fluid condition {3}
115.13  DF  .~.~.~ Pressure responsive {9}
115.18.~.~.~.~ Bypass or relief valve responsive to pressure downstream of outlet valve {2}
115.19  DF  .~.~.~.~.~> Pilot valve
115.2  DF  .~.~.~.~.~> Outlet valve carried by bypass or relief valve

DEFINITION

Classification: 137/115.18

Bypass or relief valve responsive to pressure downstream of outlet valve:

(under subclass 115.13) Subject matter wherein the outlet branch includes a valve which is located before the bypass or relief valve and the bypass or relief valve is controlled by the fluid pressure between the outlet valve and the bypass or relief valve.