Exercise devices – User manipulated force resisting apparatus – component...
Reexamination Certificate
2002-06-20
2004-11-02
Richman, Glenn E. (Department: 3764)
Exercise devices
User manipulated force resisting apparatus, component...
C482S004000, C482S138000, C482S902000
Reexamination Certificate
active
06811520
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a magnetic control multifunctional exercise apparatus with double cable sheave, and more particularly, to a device utilizing double cable sheave to ensure a safe winding of cable and to prevent dangers caused by unbalanced application forces to both cables.
2. Description of the Prior Art
The present invention is a continuation-in-part of U.S. patent application Ser. No. 09/928,713, named as “magnetic control multifunctional exercise apparatus” by the same inventor of the present invention. It's apparent from drawings of this prior art that both ends of the pull cable
30
have different length when they are pulled with unbalanced forces. In other words, the operator has to adjust both ends of the pull cable
30
to proper position (of equal length) before taking a new exercise session. Otherwise, he feels discomfort in both hands due to unbalanced forces. Even, the effect of hardening his muscles would be affected.
Moreover, the winding process of winding wheel
23
will be affected when the external pull forces disappear and the position of both ends of the pull cable
30
much differs from each other. Therefore, the winding spring
23
inside is extremely loaded, thereby diminishing the winding force of the winding wheel
23
after use for a longer period.
SUMMARY OF THE INVENTION
It is a primary object of the present invention to remove the above-mentioned drawbacks and to provide a magnetic control multifunctional exercise apparatus with double cable sheave while the winding wheels and the drive cables are utilized. Therefore, when the drive cable at one end is pulled, the magnetic control retarding mechanism is smoothly operated as well and offers the same magnetic control retarding force preset by the operator. And the drive cable at the other end won't be influenced. When the pulling force is released, the rewinding process of the winding wheel will be automatically and exactly carried out. Thus, the present invention features much convenience and practicalness.
REFERENCES:
patent: 5569138 (1996-10-01), Wang et al.
patent: 5711749 (1998-01-01), Miller
patent: 6027429 (2000-02-01), Daniels
Wang Leao
Wu Peter
Kuo-Hsiung Chiu
Richman Glenn E.
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