Exercise devices – Involving user translation or physical simulation thereof – Bicycling
Reexamination Certificate
2000-06-26
2001-10-16
Crow, Stephen R. (Department: 3764)
Exercise devices
Involving user translation or physical simulation thereof
Bicycling
C482S061000, C188S164000
Reexamination Certificate
active
06302827
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a resistance adjusting device for a wheel driven by a belt. The wheel has blades on radial direction and magnetic members are connected to a side of the wheel, and a metal board is movably located adjacent to the magnetic members so as to generate resistance force to the wheel by adjusting a distance between the metal board and the magnetic members.
BACKGROUND OF THE INVENTION
A conventional exercise device employing belt and wheels generally includes a wheel with radial blades extending outward form the wheel and a belt is connected between a pulley mounted to a hub of the wheel and another pulley mounted to a shaft. The diameter of the two pulleys are different so that when the user runs on the belt, the wheel is rotated. The radial blades cause air resistant force. However, the resistance force is fixed and cannot be adjusted. Therefore, the exercise device cannot meet different users' needs. Although another exercise device disclosed in Taiwanese utility model patent publish number 292569 partially resolves the shortcomings mentioned, it involves too many parts and employs torsion springs to control the resistance force. A frequent maintenance is required.
The present invention intends to provide a resistance adjusting device for an exercise device wherein the users simply pull a cable to control a distance between a metal board and magnetic members on the wheel, the resistance is controlled.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided a resistance adjusting device for an exercise device which includes a wheel having a hub and a shaft extends through the hub. A plurality of blades extend radially outward from the wheel and a belt reeves the hub. The resistance adjusting device comprises a magnetic member connected to a surface of the wheel and a disk is movably mounted to the shaft. A recess is defined in a first surface of the disk for receiving a metal board therein. A panel is mounted to the shaft and a cable extends through the panel and is fixedly connected to the disk. A spring is biased between the disk and the panel so that when pulling the cable, the resistance force resulted from the attraction between the magnetic member and the metal board is changed.
The primary object of the present invention is to provide a resistance force adjusting device that has a simple structure and the resistance force can be adjusted.
The object of the present invention is to provide These and further objects, features and advantages of the present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, several embodiments in accordance with the present invention.
REFERENCES:
patent: 5096024 (1992-03-01), Wu
patent: 5711404 (1998-01-01), Lee
patent: 5879273 (1999-03-01), Wei et al.
patent: 5916068 (1999-06-01), Chisholm et al.
patent: 6042517 (2000-03-01), Gunther et al.
patent: 6234938 (2001-05-01), Chen
Baxley Charles E.
Crow Stephen R.
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