US PATENT SUBCLASS 222 / 338
.~.~.~ Movable encasing wall

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}
336  DF  .~ With biasing means for discharge assistant and/or its casing {3}
337  DF  .~.~ Joint sealing bias only {1}
338.~.~.~ Movable encasing wall

DEFINITION

Classification: 222/338

(under subclass 337) Dispensers in which one or more of the walls for enclosing the discharge assistant is biased by spring or other means to engage the discharge assistant closely.

SEE OR SEARCH THIS CLASS, SUBCLASS:

345+, for a mere lip or attachment for leveling or striking off the charge in a trap chamber to prevent the passage of surplus material from the supply container. These may be biased, but do not enclose the trap chamber.