US PATENT SUBCLASS 220 / 288
.~ Removable closure guided in rotary movement (e.g., screw)

Current as of: June, 1999
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220 /   HD   RECEPTACLES

200  DF  CLOSURES {45}
288.~ Removable closure guided in rotary movement (e.g., screw) {6}
289  DF  .~.~> Threads formed or altered upon application of closure
290  DF  .~.~> With means to hold closure in a full or partially open position
291  DF  .~.~> Swinging and rotary {1}
293  DF  .~.~> Quick removal (e.g., bayonet) {7}
303  DF  .~.~> With valve or vent means
304  DF  .~.~> With packing or gasket

DEFINITION

Classification: 220/288

(under subclass 200) Device wherein the closure is directed in rotary and reciprocatory movement about screw threads or thread like elements so as to be readily, physically disassociated from its supporting structure.

(1) Note. Screw-threaded rings for holding a closure in place will be found in this class (220) subclass 319.

SEE OR SEARCH CLASS

215, Bottles and Jars,

329+, for screw thread structure used on closures for bottles and jars.

285, Pipe Joints or Couplings, particularly 189+, especially subclasses 201+ for bushings and similar fittings applied to plates, even though disclosed for receiving closures.