US PATENT SUBCLASS 222 / 337
.~.~ Joint sealing bias only


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.~.~ Joint sealing bias only {1}
338  DF  .~.~.~> Movable encasing wall


DEFINITION

Classification: 222/337

(under subclass 336) Dispensers in which the biasing means has the sole function of increasing the resistance to material flow through a joint (contacting surfaces) between two relatively movable parts.

(1) Note. Where the biasing means has either the sole function of moving the movable part to operative

(discharging) or nonoperative (nondischarging) position, or has such function in addition to the joint sealing function, see subclass 336 or other appropriate indented subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

512, for mere outlet structures with joint sealing biasing means.