US PATENT SUBCLASS 137 / 115.06
.~.~.~.~ Bypass or relief valve biased open

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

87.01  DF  SELF-PROPORTIONING OR CORRELATING SYSTEMS {8}
109  DF  .~ Self-controlled branched flow systems {4}
115.01  DF  .~.~ Bypass or relief controlled by main line fluid condition {3}
115.03  DF  .~.~.~ Flow rate responsive {7}
115.06.~.~.~.~ Bypass or relief valve biased open

DEFINITION

Classification: 137/115.06

Bypass or relief valve biased open:

(under subclass 115.03) Subject matter comprising a valve means for permitting the flow to the bypass or relief valve is held open in absence of the flow by a flexibly adjustable device (e.g., a weight of the valve body itself, or a spring or such similar flexible means).

SEE OR SEARCH THIS CLASS, SUBCLASS:

115.16+, for pressure responsive biased open bypass or relief valve.