US PATENT SUBCLASS 141 / 23
.~.~.~ Expansible chamber dispenser

Current as of: June, 1999
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141 /   HD   FLUENT MATERIAL HANDLING, WITH RECEIVER OR RECEIVER COACTING MEANS

18  DF  FILLING OR REFILLING OF DISPENSERS {5}
21  DF  .~ By operation of means causing or controlling dispensing {2}
22  DF  .~.~ Removable dispenser is supply container closure {1}
23.~.~.~ Expansible chamber dispenser {1}
24  DF  .~.~.~.~> Resilient wall

DEFINITION

Classification: 141/23

(under subclass 22) Devices in which the dispenser is characterized by a means capable of establishing a volumetric change effective to control dispensing.

SEE OR SEARCH CLASS

222, Dispensing,

206+, for resilient wall dispensers, per se, and see the search notes to subclass 206 for additional search fields.