US PATENT SUBCLASS 297 / 318
.~.~.~.~ On roller

Current as of: June, 1999
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297 /   HD   CHAIRS AND SEATS

311  DF  MOVABLE BOTTOM {5}
313  DF  .~ Tiltable {5}
316  DF  .~.~ Interconnected with back for relative concurrent movement {6}
317  DF  .~.~.~ Bottom slides forwardly while tilting {1}
318.~.~.~.~ On roller

DEFINITION

Classification: 297/318

(under subclass 317) Device wherein the bearing means comprises an antifriction element, such as a ball or roller.

SEE OR SEARCH CLASS

248, Supports,

430, for a support surface which moves horizontally on rollers.