US PATENT SUBCLASS 137 / 845
.~.~.~.~ Apertured plate

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
845.~.~.~.~ Apertured plate

DEFINITION

Classification: 137/845

(under subclass 844) Valve wherein the resilient body is a substantially flat plate-like member having an expansible orifice formed therethrough.