US PATENT SUBCLASS 137 / 851
.~.~.~ Center flexing strip

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}
851.~.~.~ Center flexing strip

DEFINITION

Classification: 137/851

(under subclass 843) Valve wherein the resilient material valve includes an elongated member which is confined or retained at each of its ends to thus limit deformation to its central region.