Magnetic adjustable loading wheel for an exercise apparatus

Details Magnetic adjustable loading wheel for an exercise apparatus Magnetic adjustable loading wheel for an exercise apparatus

2000-07-25

2002-02-12

Graham, Matthew C. (Department: 3613)

Brakes

Operators

Electric

C188S325000

Reexamination Certificate

active

06345703

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a magnetic adjustable loading wheel for an exercise apparatus, and more particularly to a device that can reach a stable adjustment of the magnetic loading.
2. Description of the Prior Art
A conventional magnetic adjustable loading wheel, as shown in
FIG. 1
, is provided with a resilient piece
1
of a permanent magnet
11
. One end of the resilient piece
1
is pivotally disposed at a proper position (A) of a stator disk
2
′, while the other end thereof is formed to be a free end. A guide rope is connected thereto respectively, and it is used for adjusting the permanent magnet
11
on the resilient piece
1
. The clearance between the permanent magnet
11
and a metal conductor
31
at the inner rim of a flywheel
3
is therefore adjustable to change the amount of the magnetic flux. Accordingly, the magnetic loading is adjustable. A similar disclosure in this prior art is seen, for example, from the U.S. Pat. Nos. 5,711,404, 1,881,164. However, the obtained clearance of this prior art between the permanent magnet
11
and the metal conductor
31
can't reach an isodistant effect (D
1
≠D
2
≠D
3
) so that the magnetic flux is unstable.
SUMMARY OF THE INVENTION
It is a primary object of the present invention to remove the above-mentioned disadvantages of the prior art and to provide a magnetic adjustable loading wheel for an exercise apparatus in which the clearance between a permanent magnet and a metal conductor obtained by means of radial displacement of the resilient piece will enable the magnetic loading to be adjusted stably.


REFERENCES:
patent: 5711404 (1998-01-01), Lee
patent: 6253890 (2001-07-01), Hunter

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