US PATENT SUBCLASS 137 / 115.25
.~.~.~.~ Electrical control

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}
115.25.~.~.~.~ Electrical control

DEFINITION

Classification: 137/115.25

Electrical control:

(under subclass 115.13) Subject matter comprising an electrical element and wherein the sensor controls the bypass or relief by means of the electrical element.