US PATENT SUBCLASS 297 / 264.1
.~.~ Spring return to neutral position

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

258.1  DF  ROCKER-MOUNTED {7}
261.1  DF  .~ Track-mounted rocker (e.g., platform rocker) {6}
264.1.~.~ Spring return to neutral position {3}
265.1  DF  .~.~.~> Coil spring {1}
268.1  DF  .~.~.~> Leaf spring
268.2  DF  .~.~.~> Transversely extending spring (e.g., torsion bar)

DEFINITION

Classification: 297/264.1

Spring return to neutral position:

(under subclass 261.1) Device in which an elastic element is connected to the track to bias the rocker to one position relative to the track and resiliently urge the rocker to this position when it has been displaced.

SEE OR SEARCH THIS CLASS, SUBCLASS:

332, for a device which biases a bottom to an inoperative position.