US PATENT SUBCLASS 169 / 33
.~ Piston discharge


Current as of: June, 1999
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169 /   HD   FIRE EXTINGUISHERS

30  DF  PORTABLE VESSELS {5}
33.~ Piston discharge


DEFINITION

Classification: 169/33

(under subclass 30) Devices wherein the discharge is caused by a pump or a mechanically operated piston acting on the contents.

(1) Note. This group includes vessels provided with rotary or rectilinear pumps operated by hand or motor, and extinguishers of the piston syringe type.

SEE OR SEARCH CLASS

222, Dispensing,

372+, for dispensing containers with pumps, subclasses 386+ for follower type dispensers.

239, Fluid Sprinkling, Spraying, and Diffusing, 320+, and 329+ for pump or follower type discharge for projecting material from the receptacle.