| 摘要 |
<p>Adjustable support apparatus comprising a support structure including a first seating element and a pivotally attached second seating element each for receiving a selected portion of a body of a user thereon, a rack and pinion adjustment assembly fixed to the support structure for reciprocally adjusting the support structure and a belt and drum adjustment assembly fixed to the support structure for pivotally adjusting the second seating element.</p> |
