Treadmill

Details Treadmill Treadmill

2002-04-29

2004-06-15

Richman, Glenn E. (Department: 3764)

Exercise devices

Involving user translation or physical simulation thereof

Treadmill for foot travel

C482S051000

Reexamination Certificate

active

06749542

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Fields of the Invention
The present invention relates to a treadmill, and more particularly, to a treadmill which offers buffering effect during the walking exercise while the curved extent of the support plate can be counteracted.
2. Description of the Prior Art
FIG. 1
shows a side view of a conventional treadmill
10
having a handrail
15
, a sloping base frame
12
on both ends of which two rollers
16
are mounted. A support plate
14
is disposed on both rollers
16
and is screwed with a plurality of buffer pieces
13
at the side thereof so that the support plate
14
is indirectly fixed on the base frame
12
. Thereafter, a walking belt is disposed around both rollers
16
and the support plate
14
.
When the operator walks on the treadmill, the feet exert pressure on the walking belt
11
for a cyclic movement. While the support plate
14
is pressed down, the buffer pieces
13
are simultaneously pressed downward. Therefore, the loading of the support plate
14
can be divided; meanwhile, a reactive force for cushioning is created in order to avoid the exercise injury of the feet.
Most of the loading of the support plate
14
is concentrated in the middle thereof so that the middle part thereof is easily crooked and deformed. However, the buffer pieces
13
at the side of the support plate
14
can't effectively reduce or even remove the concentrating stress, thereby deforming or breaking the support plate
14
. On the other side, the buffer pieces
13
can be broken, thereby being separated from the support plate
14
. Accordingly, the service life of the treadmill
10
is reduced.
SUMMARY OF THE INVENTION
It is a primary object of the present invention to eliminate the above-mentioned drawbacks and to provide a treadmill whose support elements replace the conventional buffer device and are indirectly fixed to the bottom of the base frame, thereby offering buffering effect at the middle place of the support plate.
It's another object of the present invention to provide a treadmill through which the injuries of feet during exercise session are avoided and the service life of the treadmill is prolonged.
It's a further object of the present invention to provide a treadmill through which the concentration of stress is reduced or removed.


REFERENCES:
patent: 6328676 (2001-12-01), Alessandri
patent: 6572513 (2003-06-01), Whan-Tong et al.
patent: 6652424 (2003-11-01), Dalebout

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