Patent ID: 7207927

Claim:
A roller device for attaching to a shaft of a treadmill, said roller device comprising: a tubular housing including two end portions each having a carrier provided therein, and each of said carriers including a casing folded from said end portion of said housing, and two bearing members engaged in said casings of said carriers respectively, for engaging with a shaft of a treadmill to rotatably attach said housing to the shaft, said casings each including an outer peripheral flap extended radially and outward therefrom and formed integral with said housing, said casings each including an outermost diameter that is smaller than an inner diameter of said housing for forming an annular channel between said casing of said carrier and said housing to resiliently support said casing within said housing, said casings each including an inner peripheral flange extended radially and inwardly therefrom to form an orifice therein for rotatably receiving the shaft therein, and to form a partially opened chamber therein for receiving and anchoring said bearing therein.