US PATENT SUBCLASS 297 / 268.2
.~.~.~ Transversely extending spring (e.g., torsion bar)

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  DF  .~.~ Spring return to neutral position {3}
268.2.~.~.~ Transversely extending spring (e.g., torsion bar)

DEFINITION

Classification: 297/268.2

Transversely extending spring (e.g., torsion bar):

(under subclass 264.1) Device wherein the elastic element is disposed from side to side of the seat so that one end of the elastic element is adjacent to one rocker and the other end of the elastic element is adjacent to the other rocker, such that the displacement of the rocker twists the elastic element about its longitudinal axis.