US PATENT SUBCLASS 222 / 425
.~ With trap chamber cutoffs

Current as of: June, 1999
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222 /   HD   DISPENSING

424.5  DF  SUPPLY CONTAINERS WITH TRAPS {3}
425.~ With trap chamber cutoffs {11}
426  DF  .~.~> Plural traps, nonserial {3}
431  DF  .~.~> With plural discharge {1}
434  DF  .~.~> With discharge volume varying means {4}
441  DF  .~.~> With container handle or handgrip
442  DF  .~.~> With vent passage for trap
443  DF  .~.~> With bypass or free-flow adjustment
444  DF  .~.~> Single inflow-outflow trap passage
445  DF  .~.~> Nonrigidly interconnected cutoffs {2}
448  DF  .~.~> With relatively movable actuator
449  DF  .~.~> With biasing means
450  DF  .~.~> For both inlet and outlet {1}

DEFINITION

Classification: 222/425

(under subclass 424.5) Dispensers having a supply, a chamber to which material is delivered from the supply and cut-off means for either or both the inlet to or the outlet from the trap chamber.

(1) Note. The cutoff may be a valve, closure or other means for the purpose. The separation of the predetermined charge from the main supply, or the discharge from the trap chamber may be effected by tilting the assembly where only one of the trap openings is positively controlled for effecting the trapping operation.

(2) Note. Trap chambers where the valve or closure has no material cutoff function in connection with the trapping operation are not included.

(3) Note. In the handling of discrete articles for dispensing, the release of individual articles from a hopper or stack source of articles is often effected by alternately closing and opening plural series controller members in the manner typical of the operation of many of the trap chamber cutoffs of this and the indented subclasses (Class 222, subclasses 425+). In appropriate cases, the search should be completed in Class 221, particularly in subclasses 289+ thereof, where such article dispensing devices are classified.

SEE OR SEARCH THIS CLASS, SUBCLASS:

454, for supply container and trap chamber assemblies where separation and delivery of the charge are both effected only by tilting the assembly, even though a closure or cutoff for the trap outlet is present but not necessary for the trapping operation. 544+, and see the notes thereto for dispensers with flow controllers and closures.

SEE OR SEARCH CLASS

137, Fluid Handling,

571+, for distribution systems comprising plural tanks in series flow relation; subclass 596 for stop and waste systems; subclasses 613+ for distribution systems comprising a single flow path, which may be a tank or trap with serial valves and/or closures.

177, Weighing Scales,

60+, for the control of feed and discharge of a weigh chamber.

221, Article Dispensing,

289+,. See (3) Note, above.

366, Agitating,

27+, for mortar mixers with dynamic charging and delivery, and subclasses 131+ for mixers of general utility having interrelated feed and discharge.