US PATENT SUBCLASS 137 / 204
.~.~.~ Self-emptying

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}
203  DF  .~.~ With liquid emptying means {1}
204.~.~.~ Self-emptying

DEFINITION

Classification: 137/204

(under subclass 203) Separating traps wherein the outlet empties the system of liquid of its own volition, as when the system pressure is removed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

183+, and 199+, for fluid responsive valves in diverse fluid containing pressure systems.

396+, for self-emptying tanks which are level responsive.