Exercise devices – Involving user translation or physical simulation thereof – Treadmill for foot travel
Reexamination Certificate
2002-11-01
2004-04-20
Crow, Stephen R. (Department: 3764)
Exercise devices
Involving user translation or physical simulation thereof
Treadmill for foot travel
Reexamination Certificate
active
06723027
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a treadmill having a folding mechanism, and more particularly to a treadmill having a folding mechanism that is folded and unfolded rapidly, easily and conveniently.
2. Description of the Related Art
A conventional treadmill includes a folding mechanism that is provided with a pivot shaft or is driven by a motorized member to fold the treadmill. However, the conventional folding mechanism cannot be operated and folded easily and conveniently, thereby causing inconvenience to the user. In addition, the conventional folding mechanism has a very complicated construction, and is easily worn out, thereby increasing the cost of fabrication.
SUMMARY OF THE INVENTION
The present invention has arisen to mitigate and/or obviate the disadvantage of the conventional folding mechanism for a treadmill.
The primary objective of the present invention is to provide a treadmill having a folding mechanism that is folded and unfolded rapidly, easily and conveniently.
Another objective of the present invention is to provide a treadmill having a folding mechanism, wherein the support frame is folded rapidly and automatically without needing a positioning device, thereby facilitating the user folding the treadmill, and thereby decreasing the cost of fabrication.
A further objective of the present invention is to provide a treadmill having a folding mechanism, wherein the telescopic control handle of the folding mechanism is rested on the support frame, thereby preventing the support frame from falling down.
A further objective of the present invention is to provide a treadmill having a folding mechanism, wherein the support frame is expanded downward conveniently by the cushioning effect of the telescopic control handle of the folding mechanism, thereby saving the manual work, and thereby preventing the support frame from being damaged.
In accordance with the present invention, there is provided a treadmill having a folding mechanism, comprising a base, a support frame pivotally mounted on the base, and a folding mechanism mounted between the base and the support frame, wherein:
the base is provided with two opposite guide tracks;
the folding mechanism includes two opposite first levers, two opposite second levers, two limit levers, and a telescopic control handle, wherein:
each of the two opposite first levers of the folding mechanism has a first end slidably mounted on a respective one of the two opposite guide tracks of the base, and a second end pivotally mounted on a bottom of the support frame;
each of the two opposite second levers of the folding mechanism has a first end slidably mounted on a respective one of the two opposite guide tracks of the base, and a second end pivotally mounted on the bottom of the support frame;
each of the two limit levers of the folding mechanism has a first end slidably mounted on a respective one of the two opposite guide tracks of the base, and a mediate portion pivotally mounted on the mediate portion of a respective one of the two opposite first levers of the folding mechanism; and
the telescopic control handle of the folding mechanism is pivotally on the second end of one of the two opposite first levers of the folding mechanism, and is located adjacent to the bottom of the support frame.
Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.
REFERENCES:
patent: 6213919 (2001-04-01), Wang et al.
patent: 6325745 (2001-12-01), Yu
patent: 6387016 (2002-05-01), Lo
patent: 6579211 (2003-06-01), Wu
patent: 6638200 (2003-10-01), Chang
Crow Stephen R.
Rosenberg , Klein & Lee
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