US PATENT SUBCLASS 141 / 27
.~.~.~ Container with follower

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}
25  DF  .~.~ Expansible chamber of fluid pressure applying or controlling means {3}
27.~.~.~ Container with follower

DEFINITION

Classification: 141/27

(under subclass 25) Devices in which the volumetric change effecting means comprises a follower, i.e., some solid means for exerting a force directly upon all the contents material to move it toward and through the dispensing opening.