US PATENT SUBCLASS 401 / 150
.~.~.~ Piston in cylinder

Current as of: June, 1999
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401 /   HD   COATING IMPLEMENTS WITH MATERIAL SUPPLY

143  DF  INCLUDING MEANS TO APPLY MATERIAL-MOVING FORCE {10}
146  DF  .~ In or at feeder {3}
149  DF  .~.~ Inflexible solid means {1}
150.~.~.~ Piston in cylinder

DEFINITION

Classification: 401/150

(under subclass 149) Implement whose solid member is relatively movable in substantial sealing engagement with the wall of a tubular compartment so as to change the effective capacity of the compartment.

SEE OR SEARCH THIS CLASS, SUBCLASS:

171+, for an implement including a reservoir and a force-applying piston whose range of movement is not limited to the discharge end portion of the reservoir.