Patent ID: 8414074
Filing Date: 2013-04-09
Classification: A47C,F16H,Y10S,Y10T

Abstract:
1. A lift chair comprising, a frame including a front and a back, the frame further including at least one fixed support member; a front seat pivotably coupled to the frame at a first pivot axis; a back seat pivotably coupled to the front seat at a second pivot axis, the front seat and back seat supported on the at least one fixed support member in a first position such that an upper surface of the front seat and an upper surface of the back seat are positioned in a first plane; a back section coupled to the frame to move relative to the back seat; a main link pivotably coupled to the frame at a third pivot axis and pivotably coupled to the back seat at a fourth pivot axis; a linear actuator pivotably coupled to the frame at a fifth pivot axis and the main link at a sixth pivot axis; wherein the linear actuator changes length to move the main link, the front seat, and the back seat between the first position and a second position wherein in the second position the upper surface of the back seat lies in a second plane that is substantially parallel to the first plane and the upper surface of the front seat is no longer positioned in the first plane, wherein an upper surface of the back section is maintained in a plane that is substantially parallel to the first and second planes throughout the movement between the first and second positions.