US PATENT SUBCLASS 297 / 332
.~.~.~ Biased to position

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

311  DF  MOVABLE BOTTOM {5}
313  DF  .~ Tiltable {5}
331  DF  .~.~ Movable to inoperative position {3}
332.~.~.~ Biased to position {1}
333  DF  .~.~.~.~> Spring axis coaxial with pivot axis of bottom

DEFINITION

Classification: 297/332

(under subclass 331) Device comprising means urging the bottom to its nonuse position.

SEE OR SEARCH THIS CLASS, SUBCLASS:

248+, for means to couple adjacent seats having tilting bottoms.

300.1, for a back tiltable with a bottom against the action of a biasing means.

SEE OR SEARCH CLASS

248, Supports, 580+, for a resilient means for biasing a tilting support surface to a predetermined position.