| 摘要 |
<p>A chair device which can consist of a multiple part secondary seat mechanism which can be incorporated into an elevator chair which can also have an anti-tipping design feature, and related method. Various exemplary embodiments include one of more of the following a seat assembly mounted on a support frame which includes an occupant supporting seat having a rear seat section, a seat back connected to and extending upwardly from the rear seat section and a front seat section which extends substantially across the extent of the reat seat section and which is pivoted to the rear seat section, a seat drive unit that drives the seat assembly from a down position where the front and rear seat sections extend in the same first plane to a second raised position where the rear seat section remains in a second plane parallel to said first plane while the front seat section angles downwardly and outwardly; and subsequently the seat drive unit drives the seat assembly to an uppermost position where the rear seat section maintains substantially the same said plane and the front seat section is perpendicular to the ground.</p> |
