US PATENT SUBCLASS 137 / 540.11
.~.~.~.~.~ Broken valve parts retainer

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}
528  DF  .~.~ Reciprocating valves {5}
535  DF  .~.~.~ Spring biased {5}
540  DF  .~.~.~.~ Spring coaxial with valve {9}
540.11.~.~.~.~.~ Broken valve parts retainer

DEFINITION

Classification: 137/540.11

(under subclass 540) Valves having retaining means for broken valve parts, e.g., an auxiliary chamber or stop on the valve stem by means of which broken valve parts are prevented from entering the cylinder of compressors, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

343+, for means to protect a person or thing from injury through contact with the system or parts thereof.