US PATENT SUBCLASS 137 / 183
.~.~.~ With fluid responsive valve

Current as of: June, 1999
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137 /   HD   FLUID HANDLING

154  DF  DIVERSE FLUID CONTAINING PRESSURE SYSTEMS {7}
171  DF  .~ Fluid separating traps or vents {5}
177  DF  .~.~ Discriminating outlet for liquid {4}
183.~.~.~ With fluid responsive valve {3}
184  DF  .~.~.~.~> Successively opened valves
185  DF  .~.~.~.~> Gas collecting float (e.g., inverted bucket) {1}
187  DF  .~.~.~.~> Level responsive {2}

DEFINITION

Classification: 137/183

(under subclass 177) Separating traps wherein the discrimination is obtained by an outlet valve which is responsive to a fluid condition.

SEE OR SEARCH THIS CLASS, SUBCLASS:

455+, for line condition change responsive valves of the safety cut-off, pop, pressure regulating, safety or check types, and see the notes to subclass 455 for search notes on condition responsive valves in this and related classes.

SEE OR SEARCH CLASS

236, Automatic Temperature and Humidity Regulation,

53, 60 for temperature responsive liquid separating traps in devices for automatic temperature regulation.