US PATENT SUBCLASS 137 / 179
.~.~.~ With non-discriminating gas vent or liquid discharge

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}
179.~.~.~ With non-discriminating gas vent or liquid discharge {2}
180  DF  .~.~.~.~> Abnormal pressure responsive liquid blow-off or drain
181  DF  .~.~.~.~> Manual control

DEFINITION

Classification: 137/179

(under subclass 177) Separating traps provided with a nondiscriminating gas vent, an additional nondiscriminating liquid outlet or an additional control of the discriminating liquid outlet, the additional control being such as to give a nondiscriminating action to the discriminating outlet.

SEE OR SEARCH THIS CLASS, SUBCLASS:

175, for plural discriminating outlet trap devices in which one outlet is a choked or restricted passage gas bleed.

583+, for distribution systems with plural openings, one of which is a gas vent, and see the search notes to subclasses 583 and 587.