Patent ID: 6607244
Filing Date: 2003-08-19
Classification: A47C

Abstract:
A reclining chair comprising:a support base; a char comprising at least a seat portion; a means for coupling a forward portion of said seat portion to said support base such that said seat portion moves substantially about a pivoting axis located adjacent said forward portion; at least one coil spring provided adjacent said forward portion of said scat portion and between said seat portion and said support base; a means for coupling ends of said coil spring pivotally to said seat portion arid said support base; a means for pivoting one end of said coil spring about another end of said coil spring; and an offset crank means for driving said means for pivoting one end of said coil spring about another end thereof; wherein said means for pivoting said one end of said coil spring about another end thereof comprises a boomerang shaped bell crank rotatably coupled to said support base at a center thereof with a long arm thereof being driven by said offset crank means and a short arm thereof coupled to said one end of said coil spring for pivoting said one end; whereby by pivoting said one end of said coil spring about another end of said coil spring an effective force per unit distance of said coil spring is varied and reclining chair is made equally comfortable to sit and recline in throughout the entire range of heavy to lightweight persons.