US PATENT SUBCLASS 16 / 273
.~ Having means to reduce friction between hinge parts

Current as of: June, 1999
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16 /   HD   MISCELLANEOUS HARDWARE

221  DF  HINGE {32}
273.~ Having means to reduce friction between hinge parts {2}
274  DF  .~.~> By fluid lubricant
275  DF  .~.~> Ball or roller bearing {1}

DEFINITION

Classification: 16/273

Having means to reduce friction between hinge parts:

(under subclass 221) Hinge including means specifically provided for lessening the surface friction between two opposing surfaces which are caused to move over one another as the hinged members* are swung about the hinge axis*.