US PATENT SUBCLASS 220 / 319
.~.~ Ring type

Current as of: June, 1999
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220 /   HD   RECEPTACLES

200  DF  CLOSURES {45}
315  DF  .~ Having means for securing or retaining closure in its closed position (e.g., fastening devices) {8}
319.~.~ Ring type {1}
320  DF  .~.~.~> For applying radial pressure (e.g., contractable bands encircling member) {1}

DEFINITION

Classification: 220/319

(under subclass 315) Device wherein the fastener is in the form of a ring which surrounds the receptacle mouth and closure periphery, binding them together. A ring of this type would not, in and of itself, form a closure.