US PATENT SUBCLASS 220 / 293
.~.~ Quick removal (e.g., bayonet)

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.~.~ Quick removal (e.g., bayonet) {7}
294  DF  .~.~.~> Elliptical closure flange or passage mouth
295  DF  .~.~.~> With biased gasket or packing
296  DF  .~.~.~> Interrupted threads
297  DF  .~.~.~> Keyhole slot
298  DF  .~.~.~> Radially inwardly and outwardly extending interlocking lugs {1}
300  DF  .~.~.~> Locking lug engages "L" or cresent-shaped keeper slots
301  DF  .~.~.~> Lugs engage cammed keeper {1}

DEFINITION

Classification: 220/293

(under subclass 288) Device wherein the closure and receptacle are provided with interlocking means constructed to permit quick and easy removal or replacement of the closure, said means allowing the closure, when in passage blocking position, to be removed therefrom by rotating the

closure less than 360 degrees.