US PATENT SUBCLASS 137 / 115.05
.~.~.~.~.~ Relief or bypass closes as main opens

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}
115.03  DF  .~.~.~ Flow rate responsive {7}
115.04  DF  .~.~.~.~ Including controlling main line flow {1}
115.05.~.~.~.~.~ Relief or bypass closes as main opens

DEFINITION

Classification: 137/115.05

Relief or bypass closes as main opens:

(under subclass 115.04) Subject matter wherein the sensor, in response to the change in the flow rate, is simultaneously opening a main line valve and closing a relief valve in a branch line or vice versa.