US PATENT SUBCLASS 222 / 289
.~.~.~ Reversible

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}
282  DF  .~ With discharge volume varying means {12}
288  DF  .~.~ Interchangeable, removable or selectively usable discharge assistant or element thereof {1}
289.~.~.~ Reversible

DEFINITION

Classification: 222/289

(under subclass 288) Dispensers in which the part or parts are reversible in their relation to the rest of the device to bring one of two alternatively usable elements into operation. Mere shifting of a rotary or pivoted part about its usual axis is not considered reversibility.