US PATENT SUBCLASS 297 / 204
.~ With means to adjustably set tautness of supporting surface

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

195.1  DF  STRADDLE SEAT (E.G., SADDLE TYPE, ETC.) {16}
204.~ With means to adjustably set tautness of supporting surface {3}
205  DF  .~.~> Rod mounting bracket includes tautness setting means
206  DF  .~.~> Front spring adjustably clamped to rear spring
207  DF  .~.~> Threaded adjusting means extends longitudinally of seat

DEFINITION

Classification: 297/204

(under subclass 195.1) Device provided with means to vary the tension of the occupant supporting surface and to hold the surface at various degrees of tension.