US PATENT SUBCLASS 137 / 846
.~.~.~.~ Having exit lip

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

455  DF  LINE CONDITION CHANGE RESPONSIVE VALVES {11}
511  DF  .~ Direct response valves (i.e., check valve type) {14}
843  DF  .~.~ Resilient material valve {4}
844  DF  .~.~.~ Having expansible port {2}
846.~.~.~.~ Having exit lip {4}
847  DF  .~.~.~.~.~> With biasing means
848  DF  .~.~.~.~.~> Side vent
849  DF  .~.~.~.~.~> Multiple slit
850  DF  .~.~.~.~.~> Internally extending mount

DEFINITION

Classification: 137/846

(under subclass 844) Valve wherein the resilient body has a fluid passage therethrough a portion of which is substantially nondeformable, which passage terminates in an expansible port at the point where the fluid flows from the

body.