US PATENT SUBCLASS 220 / 349
.~.~ Having antifriction means

Current as of: June, 1999
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220 /   HD   RECEPTACLES

200  DF  CLOSURES {45}
345.1  DF  .~ Closure guided in reciprocating movement {8}
349.~.~ Having antifriction means

DEFINITION

Classification: 220/349

(under subclass 345) Device provided with antifriction means interposed between the closure and its support to lessen the friction therebetween during closure movement.

(1) Note. A closure in this subclass usually includes either a guide mechanism which lifts the closure away from (frictional) contract with the receptacle or contains a bearing surface such as a roller bearing.