US PATENT SUBCLASS 137 / 115.21
.~.~.~.~ Plural sensors for single bypass or relief valve

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}
115.13  DF  .~.~.~ Pressure responsive {9}
115.21.~.~.~.~ Plural sensors for single bypass or relief valve {1}
115.22  DF  .~.~.~.~.~> Sensors interconnected by timing or restrictive orifice

DEFINITION

Classification: 137/115.21

Plural sensors for single bypass or relief valve:

(under subclass 115.13) Subject matter comprising at least two pressure sensors for controlling either the bypass or relief valve.

SEE OR SEARCH THIS CLASS, SUBCLASS:

115.03+, for a flow responsive bypass or relief valve.