US PATENT SUBCLASS 137 / 115.03
.~.~.~ Flow rate responsive

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.~.~.~ Flow rate responsive {7}
115.04  DF  .~.~.~.~> Including controlling main line flow {1}
115.06  DF  .~.~.~.~> Bypass or relief valve biased open
115.07  DF  .~.~.~.~> Pilot valve operated
115.08  DF  .~.~.~.~> Carried choke
115.09  DF  .~.~.~.~> Choke {1}
115.11  DF  .~.~.~.~> Venturi
115.12  DF  .~.~.~.~> Flapper

DEFINITION

Classification: 137/115.03

Flow rate responsive:

(under subclass 115.01) Subject matter wherein the sensor is detecting the variation in the quantity of the fluid flowing in the main flow line in a set period of time and in response thereto the sensor controls the flow in the bypass or relief.

(1) Note. This subclass also includes a flow measurement by a pressure differential along the main line.

SEE OR SEARCH THIS CLASS, SUBCLASS:

87.03+, for a self-proportioning and correlating system having a flow rate sensor.

107, for supply and exhaust-type waste valves opening in response to the stoppage of the main line flow.

118.04+, for flow rate responsive plural outflows.

215+, for back flow prevention by vacuum breaking. 455+, for line condition responsive valves which respond to a change in the flow rate.