Patent ID: 7013585
Filing Date: 2006-03-21
Classification: A43B

Abstract:
1. A cushion device comprising: a bladder assembly including a first bladder and a second bladder, a hose connected in communication between the first bladder and the second bladder, the first bladder including a plurality of columns connected between a top and a bottom of the first bladder, the second bladder having a compressible unit received therein, the compressible unit including a top pad and a bottom pad, a spring connected between the top pad and the bottom pad and the spring being a funnel-shaped spring with two enlarged ends and a narrow middle portion, each of the top pad and the bottom pad including a recess, the two enlarged ends of the spring respectively engaged with the two recesses in the top pad and the bottom pad, an outgoing hose extending from the compressible unit and connected to an inlet of the first bladder, an inlet hose having an end located outside of the second bladder and the other end of the inlet hose connected to the compressible unit.