US PATENT SUBCLASS 137 / 115.1
.~.~.~.~.~ Variable choke resistance

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}
115.09  DF  .~.~.~.~ Choke {1}
115.1.~.~.~.~.~ Variable choke resistance

DEFINITION

Classification: 137/115.1

Variable choke resistance:

(under subclass 115.09) Subject matter wherein the choke is adjustable to provide different flow resistances without requiring disassembly of the sensor.