US PATENT SUBCLASS 297 / 261.3
.~.~.~ With anti-friction means

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}
261.2  DF  .~.~ Providing grooved guide {1}
261.3.~.~.~ With anti-friction means

DEFINITION

Classification: 297/261.3

With anti-friction means:

(under subclass 261.2) Device provided with roller means disposed between the rocker and track to facilitate the rocking motion therebe-tween.