Patent ID: 6170914
Filing Date: 2001-01-09
Classification: A47C

Abstract:
A chair comprising:a base including two side portions and a front portion, said side portions of said base each including a track provided thereon,a seat provided above said base and including two side portions and a front portion, said side portions of said seat each including a track provided thereon,two follower devices each including a pair of bars pivotally secured together at a middle portion thereof and each having an upper end and a lower end, one upper end of each pair of bars being slidably coupled in said tracks of said seat, and one lower end of each pair of bars being slidably coupled in said tracks of said base, said bars being expanded and folded when said seat moves up and down relative to said base, andmeans for moving said seat up and down relative to said base, said moving means including a tube provided in said base, a rod extended downward from said seat and slidably received in said tube and having an inner thread formed therein, a bolt rotatable received in said tube and threaded with said inner thread of said rod, and means for rotating said bolt to move said rod up and down relative to said tube.