US PATENT SUBCLASS 222 / 344
.~ Movable or 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.~ Movable or conveyer-type trap chamber {9}
345  DF  .~.~> With striking or clearing means {4}
353  DF  .~.~> Barometric or angle of repose
354  DF  .~.~> With relatively movable cutoff carried by trap chamber
355  DF  .~.~> With cutoff interconnected with trap chamber for operation
356  DF  .~.~> Dipping trap chamber, nonrotary, nonendless belt {2}
359  DF  .~.~> With relatively movable actuator {1}
361  DF  .~.~> Reciprocating (including oscillating) conveyer-type trap chamber {3}
367  DF  .~.~> Rotary conveyer-type trap chamber {2}
371  DF  .~.~> Endless belt carried

DEFINITION

Classification: 222/344

(under subclass 251) Dispensers having a chamber so constructed and related to the supply as to receive material therefrom, which chamber is movable mounted relative to the supply. The material in the trap chamber is isolated from the supply either by the relative movement of the supply and trap chambers or by special means as flow controllers, closures, etc.

(1) Note. A conveyor type trap chamber functions to convey (translate) the material from the inlet from the supply to a spaced outlet while some are movable chambers which, when moved to one position, permit material flow thereinto from the supply and in a second position cut off the supply and permit discharge. The isolation of material must be accompanied by the motion of the trap chamber relative to the supply, and the trapped material must be either discharged or made accessible for use. The isolation may be accomplished by the travel of the trap chamber beyond a wall of a casing or supply container, by removal beyond the point where the angle of repose of the material in the supply is established, preventing further flow into the trap chamber, or by raising the chamber above the level of the material in the supply container.

(2) Note. Many conveyor type or movable trap chambers are provided for in preceding subclasses in other combinations, some of these being specially noted below.

(3) Note. Movable trap chamber structures (designated as segregating chambers) may be found in Class 221, Article Dispensing. In many instances the structure and mode of operation is entirely similar. A statement of the line between the classes, outlining the specific disposition of the art, is included in Lines With Other Classes and Within This Class, in the Class definition of Class 221.

SEE OR SEARCH THIS CLASS, SUBCLASS:

135+, for conveyor type of movable trap chambers where there are plural sources, compartments, receptacles and/or with spaced jacket, not serially arranged in the dispensing path.

160+, where the supply receptacle is movably mounted. 216+, where an agitator receptacle or ejector operates to remove material from the trap chambers.

226+, where there is a serially precedent agitator.

252+, where there are plural conveyor type or movable trap chambers or combinations with other discharge assistants.

282+, where there is discharge volume varying means.

332, where there is a vent passage.

336+, where there is a biasing means.

425+, which have nonmovable trap chambers (i.e., trap chambers which do not require motion to trap material, though they may be movable for mere adjustment purposes) and which have valves or other cut-offs to control inflow of material from a source and/or discharge of material. Chambers having movable wall parts which perform a definite material conveying (translating) motion are in subclass 344 and indented subclasses, as are chambers which move and substantially completely surround the trapped material, as distinguished from chambers which are stationary and merely have valves or other cut-off elements which move to permit entry and/or discharge of material from the trap chamber.

SEE OR SEARCH CLASS

73, Measuring and Testing,

217, 226, for tank type volume or rate of flow meters.

141, Fluent Material Handling, With Receiver or Receiver Coacting Means, 110+, and 358 for devices including scoop, drawer, or tube type devices which must be removed from the supply container for discharge of material therefrom.

184, Lubrication,

61+, for conveyor type lubricators.

221, Article Dispensing,

263+, for article dispensing devices having movable segregating chamber structures. See (3) Note, above.