US PATENT SUBCLASS 222 / 489
.~.~.~ Screw-type flow controller or closure

Current as of: June, 1999
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222 /   HD   DISPENSING

478  DF  WITH PLURAL OPENINGS OR DISCHARGE GUIDES {3}
481  DF  .~ Having flow controllers or closures {3}
488  DF  .~.~ For single passage into which plural passages merge {1}
489.~.~.~ Screw-type flow controller or closure

DEFINITION

Classification: 222/489

(under subclass 488) Dispensers in which the flow controller or closure is of the screw type, i.e., carries or is rigid with an element that carries screw threads for connection to some other part, so as to be movable because of screw motion.

SEE OR SEARCH THIS CLASS, SUBCLASS:

549+, for miscellaneous dispensers with screw type flow controller or closures.

SEE OR SEARCH CLASS

251, Valves and Valve Actuation,

215+, and 264+ for screw actuated valves.