US PATENT SUBCLASS 222 / 438
.~.~.~ With means to change trap chamber volume

Current as of: June, 1999
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222 /   HD   DISPENSING

424.5  DF  SUPPLY CONTAINERS WITH TRAPS {3}
425  DF  .~ With trap chamber cutoffs {11}
434  DF  .~.~ With discharge volume varying means {4}
438.~.~.~ With means to change trap chamber volume {2}
439  DF  .~.~.~.~> Movable cutoff of cutoff seat carrying elements
440  DF  .~.~.~.~> Having straight-line motion

DEFINITION

Classification: 222/438

(under subclass 434) Dispensers having movable means which changes the volumetric capacity of the chamber.

SEE OR SEARCH THIS CLASS, SUBCLASS:

251+, or the places set forth in the notes thereto, where the movable means which changes the chamber volume also assists in causing discharge because of such motion, particularly subclasses 305+.