Roller assembly apparatus and method of use

Details Roller assembly apparatus and method of use Roller assembly apparatus and method of use

2005-03-01

2005-03-01

Yu, Justine R. (Department: 3764)

Exercise devices

Involving user translation or physical simulation thereof

Treadmill for foot travel

C198S842000, C193S0350SS

Reexamination Certificate

active

06860838

ABSTRACT:
The present invention relates in general to roller assembly apparatuses, and specifically to roller assembly apparatuses used in treadmills. An embodiment of the invention includes a roller apparatus, comprising: a shaft with raised surfaces on each end, a rotatable tube disposed around a portion of the shaft, and bearing assemblies. The bearing assemblies are disposed between the raised surfaces of the shaft and the rotatable tube such that the inner surfaces of the bearing assemblies contact the raised surfaces which allows the inner surfaces of the bearing assemblies to rotate on the raised surfaces, thus eliminating forces on the inner surfaces of the bearing assemblies.

REFERENCES:
patent: 3650529 (1972-03-01), Salm et al.
patent: 4364556 (1982-12-01), Otte
patent: 4872664 (1989-10-01), Parker
patent: 5018722 (1991-05-01), Whitmore

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