A LIFT CHAIR AND A CHAIR BASE FRAME WITH A FORCE BALANCE MECHANISM FOR USE THEREWITH

摘要

A support frame for use in a lift chair. In one embodiment, the support frame includes a base frame having longitudinally extending front and rear frame base rails; a first longitudinally extending side frame base rail connected to the front and rear frame base rails and a second longitudinally extending side frame base rail connected to the front and rear frame base rails, respectively, the first and second side frame base rails and the front and rear frame base rails being co-planar for supporting the lift chair on a surface; and a force balance member mounted to the rear frame base rail, wherein the force balance member is has a transversely extending base portion, a first arm portion, which is extending from the base portion at a first angle aa, and an opposite, second arm portion, which is extending from the base portion at a second angle at,, and wherein the end of the first arm portion is connected to the first longitudinally extending side frame base rail and the end of the second arm portion is connected to the second longitudinally extending side frame base rail, respectively.