US PATENT SUBCLASS 222 / 336
.~ With biasing means for discharge assistant and/or its casing

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.~ With biasing means for discharge assistant and/or its casing {3}
337  DF  .~.~> Joint sealing bias only {1}
339  DF  .~.~> For oscillating discharge assistant
340  DF  .~.~> For reciprocating piston on follower-type impeller {1}

DEFINITION

Classification: 222/336

(under subclass 251) Dispensers in which there are biasing means of spring or other form for moving to a desired position, either (1) the discharge assistant or (2) its enclosing casing.

(1) Note. Under section (1) of the above definition, the biasing means must act to move the discharge assistant to operative (discharging) or nonoperative (nondischarging) position. Biasing means operating on movable parts but not having such function are not included.

(2) Note. For section (2) of the above definition, see the definition of subclass 337.

SEE OR SEARCH THIS CLASS, SUBCLASS:

337, see note (2) above.

394+, for biasing means for fluid pressure generating pumps and pulsators.

407, for biased deformable discharge assistant elements, the biasing means not operating as in note (1) above. 511+, for biasing means for dispenser outlet elements, such as movable nozzles, valves, closures, or other flow controllers.

581, and 582, for a dispensing inkwell including a dip well which is a movable trap chamber biased toward resetting position; and see the search notes to these subclasses.

SEE OR SEARCH CLASS

184, Lubrication,

45.1+, and 46, for lubricators with spring and weight operated followers.