US PATENT SUBCLASS 137 / 115.09
.~.~.~.~ Choke


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


DEFINITION

Classification: 137/115.09

Choke:

(under subclass 115.03) Subject matter wherein the sensor includes a device for restricting the flow of the fluid in the main flow line.

SEE OR SEARCH CLASS

166, Wells,

316+, for changeable chokes.