US PATENT SUBCLASS 222 / 396
.~.~ With pressure limiting means

Current as of: June, 1999
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222 /   HD   DISPENSING

251  DF  WITH DISCHARGE ASSISTANT (E.G., IMPELLER, PUMP, CONVEYER, MOVABLE TRAP CHAMBER, ETC.) {30}
394  DF  .~ Fluid pressure {9}
396.~.~ With pressure limiting means

DEFINITION

Classification: 222/396

(under subclass 394) Dispensers having means, such as pressure operated relief valves, to limit the maximum fluid pressure exerted on the contents.

SEE OR SEARCH THIS CLASS, SUBCLASS:

52+, if automatic control means (other than mere valves operated directly by pressure) are claimed.

397, for manually operated relief valves.

SEE OR SEARCH CLASS

137, Fluid Handling, 171+, for fluid separating traps or vents in diverse fluid containing pressure systems.