| 摘要 |
<p>ADJUSTABLE CHAIR A positionable chair-lounge has a base which has transverse support beams, a movable top section that has transverse beams and is supported upon rollers that engage arcuate tracks secured to the base, a gear head motor type of power assembly which directly drives a threaded shaft and a drive tube through an irreversible drive. One end of the power assembly is pivotally attached to the top section by a guiding bracket the other end is pivotally attached to the base by a guiding bracket. The base and seat transverse beams and the power assembly are positioned so that the seat can be moved in an arcuate path relative to the base.</p> |
