US PATENT SUBCLASS 220 / 294
.~.~.~ Elliptical closure flange or passage mouth

Current as of: June, 1999
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220 /   HD   RECEPTACLES

200  DF  CLOSURES {45}
288  DF  .~ Removable closure guided in rotary movement (e.g., screw) {6}
293  DF  .~.~ Quick removal (e.g., bayonet) {7}
294.~.~.~ Elliptical closure flange or passage mouth

DEFINITION

Classification: 220/294

(under subclass 293) Device wherein the interlocking means consists of an oval shaped closure, closure flange or passage mouth allowing the closure and passage mouth to be interlocked upon relative rotation therebetween; the interlocking of these parts occurs when the short axis of the ellipse is in contact with its coacting surface.