US PATENT SUBCLASS 222 / 361
.~.~ Reciprocating (including oscillating) conveyer-type trap chamber

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}
344  DF  .~ Movable or conveyer-type trap chamber {9}
361.~.~ Reciprocating (including oscillating) conveyer-type trap chamber {3}
362  DF  .~.~.~> Oscillating {1}
365  DF  .~.~.~> Plural concentric enlargements on stem
366  DF  .~.~.~> Single inlet-outlet

DEFINITION

Classification: 222/361

(under subclass 344) Dispensers in which the movable trap chamber or trap forming elements are reciprocated between supply and discharge positions to control the material flow and transport the trapped material relatively to the supply container.

(1) Note. In the case of two rigidly connected reciprocating trap-forming members the passage from the supply container to the dispenser outlet must cooperate with the members to prevent continuous flow in the normal and intended operation of the dispenser.

SEE OR SEARCH THIS CLASS, SUBCLASS:

137, for combinations involving plural sources, compartments or receptacles.

164+, for tilting supply containers.

216+, for combinations with an agitator or ejector to remove material from the trap chamber. 233+, and 243+, for combinations with a precedent, serially arranged agitator.

275+, for plural devices arranged in sets.

282+, for combinations with discharge volume varying means.

336+, for combinations with biasing means.

356+, for nonreciprocating dipping trap chamber type.

409, for reciprocating discharge assistants not of trap chamber type.

559+, and see the notes thereto for reciprocable flow controllers or closures.

583, for a dispensing inkwell including a movable trap chamber which is a dip well immersible in the supply for filling and elevatable to a position accessible to a penpoint.