Patent ID: 6659922
Filing Date: 2003-12-09
Classification: A63B

Abstract:
A resistance adjustment mechanism for an easy pull exerciser, mainly comprising an outer shell having a pair of semi-spherical shells, a handle on one side of said outer shell, a winding wheel inside said semi-spherical shells, a wrapping pull string on peripheral of said winding wheel, one end of said wrapping pull string fixed to said winding wheel and the other end to a pull handle located on other side of said outer shell, a side cavity formed on one side of said winding wheel for placing a spiral spring, said winding wheel placed on an outer shell by passing a gear axis through, said spiral spring fixed to said winding wheel at outer end and fixed to said gear axis at an inner end, when said pull spring is subject to pulling force, said spiral spring is deformed and twisted, when no force is applied to said pull string, said spiral spring is back to normal state and said winding wheel is wrapped around by said pull spring, characterized by that:said outer shell contains a first shell and a second shell, an adjustment device is placed at one end of said pull string near said winding wheel, said adjustment device contains a rotating knob, a retainer and a one-way clutch bearing, said retainer is clamped and fixed to said first shell, outside of said retainer is available for said rotating knob to secure by passing a thread stud through, said thread stud can connect to said one-way clutch bearing, a curved plate is located on a front of said one-way clutch bearing inside said outer shell for said pull string to move along a curved surface; and inside an axis holder for said second shell, there is a ring gear for holding said gear axis, at an outer end of said gear axis, there is a multilateral hole, on said gear axis, there are teeth in a circle, at a rear part, there is an extended hollow axis tube incorporating an elastic device, under normal conditions, said teeth of said gear axis are retained to an inner ring gear due to action of said elastic device.