Patent ID: 6619735
Filing Date: 2003-09-16
Classification: A47C,A61G,Y10S

Abstract:
A power-actuated chair-type elevating apparatus, comprising a base, a table, a seat, and an elevating mechanism;said base being provided at a lower side with casters so as to be slidably moved on a floor surface, and at an upper side with an upright lower tube; said table including a tabletop having two handles rearward extended from two lateral sides of said tabletop, and an upper tube fixedly connected to a bottom surface of said tabletop to downward extend therefrom to axially movably cover the lower tube; said elevating mechanism being mounted in said lower and upper tubes to locate between said table and said base, and including a foot fixedly mounted to a bottom of said table, and an outer telescopic tube fixedly connected at a lower end tour to a top of said base, such that when said elevating mechanism operates, said table and said upper tube are caused to synchronously move up ward or downward relative to said base; said power-actuated chair-type elevating apparatus being characterized in that said seat is connected to and supported by a generally U-shaped supporting means and first, second, and third links; a first end of said supporting means being pivotally connected to a lower rear end of said seat, and a second of which being fixedly connected to said upper tube; said first, second, and third links being coaxially and pivotally connected at first ends, with a second end of said third link pivotally connected to said upper tube, a second end of said first link pivotally connected to a lower front end of said seat, and a second end of said second link pivotally connected to said base; and said coaxially and pivotally connected first ends of said first, second, and third links being located at a height lower than said second end of said third link pivotally connected to said upper tube; whereby when said elevating mechanism operates to elevate said table and accordingly said upper tube, a rear end of said seat gradually rises to be higher than a front end of said seat, making said seat forward inclined.