US PATENT SUBCLASS 222 / 321.3
.~.~.~ With antileak or antisiphon 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}
320  DF  .~ With movable nozzle interconnected therewith {1}
321.1  DF  .~.~ With material supply container and discharge assistant casing {6}
321.3.~.~.~ With antileak or antisiphon means

DEFINITION

Classification: 222/321.3

With antileak or antisiphon means:

(under subclass 321.1) Subject matter including means to prevent leakage of the material from a discharge passage or means to prevent siphoning following the operation of the discharge assistant.

SEE OR SEARCH THIS CLASS, SUBCLASS:

72, for a volume or rate of flow metering with a by-pass, gas separation or anti-siphon means.

73, for a volume or rate of flow metering with means for relieving or maintaining hose pressure.

108+, for means for catching or disposing of leakage, drip, or waste, including those which also return the same to the supply.

318, for means for by-passing a discharge assistant or for returning material from the discharge side thereof to the supply.

424, for a miscellaneous dispenser having means to return

material to the supply. SEE OR SEARCH CLASS

137, Fluid Handling,

215+, for a back flow or siphon preventing in fluid handling system.

221, Article Dispensing,

245, for an article dispensing device having a return stroke inhibiting means (i.e., full stroke-mechanism).

251, Valves and Valve Actuation,

34, for a reverse flow prevention in fluid pressure type servo-motor valve actuator.