US PATENT SUBCLASS 137 / 849
.~.~.~.~.~ Multiple slit

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  DF  .~.~.~.~ Having exit lip {4}
849.~.~.~.~.~ Multiple slit

DEFINITION

Classification: 137/849

(under subclass 846) Valve wherein the expansible port is formed as a plurality of cuts in the resilient body.

(1) Note. The cuts may intersect one another thus forming multiple exit flaps or the cuts may be spaced from and open independently of one another.