Patent ID: 7261676

Claim:
An exerciser comprising: a base including a shaft provided thereon, a housing rotatably engaged onto and supported on said shaft, and including a tube extended therefrom and rotatably engaged on said shaft, said housing including a chamber formed therein and defined by an outer peripheral wall which includes a groove formed therein, a belt engaged onto and wound around said tube of said housing, for rotating said housing relative to said shaft, a barrel received in said chamber of said housing, and secured to said shaft and rotated in concert with said shaft, said barrel including a slot formed therein, a coil spring received in said chamber of said housing, and including a first end engaged into said slot of said barrel, and a second end engaged into said groove of said outer peripheral wall of said housing, to apply a spring biasing force against said housing, and a cover including a space formed therein and defined by an outer peripheral fence, to receive said housing, and to allow said housing to be received in said space of said peripheral fence of said cover, and to allow said chamber of said housing to be suitably enclosed by said cover.