US PATENT SUBCLASS 239 / 320
.~ Follower in holder

Current as of: June, 1999
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239 /   HD   FLUID SPRINKLING, SPRAYING, AND DIFFUSING

302  DF  INCLUDING SUPPLY HOLDER FOR MATERIAL {15}
320.~ Follower in holder {3}
321  DF  .~.~> Floating or biased piston {1}
323  DF  .~.~> Collapsible or flexible follower (i.e., non-rigid)
324  DF  .~.~> Screw actuated

DEFINITION

Classification: 239/320

(under subclass 302) Apparatus comprising a member relatively movable with respect to and acting as a wall in the supply container which urges all the material in the direction of the egress port by moving within the container with the material.

SEE OR SEARCH CLASS

222, Dispensing, appropriate subclasses for dispensers comprising a container with follower and see the search class notes in

386, for the locus of analogous art.