Patent ID: 6338531
Filing Date: 2002-01-15
Classification: A61G

Abstract:
A stand-assist chair comprising:a base frame adapted to stand on the floor; a seat frame movable above the base frame and carrying a generally horizontal seat; a back on the seat frame extending upward from a rear edge of the seat; a motor housing fixed on one of the frames and having a pair of laterally spaced end walls; front and back actuating shafts having ends journaled in the end walls of the motor housing under front and rear edges of the seat; respective front and back actuating arms on and extending radially from the shafts; respective pairs of front and back operating arms on and extending radially from the ends of the shafts, the front operating arms having outer ends pivoted on the other of the frames adjacent a front edge of the seat and the rear operating arms having outer ends operatively coupled to the other of the frames adjacent the rear seat edge; and drive means including respective independently operable front and rear motors fixed in the motor housing and connected to the respective actuating arms for rotating the respective shafts so as to move the front and rear seat edges independently of each other between respective lower, intermediate, and upper positions, whereby the chair can assume a sitting or reclining position in the lower positions of the seat edges, a stand-assist position in the upper positions of the seat edges, and other positions in the intermediate positions of the seat edges.