Exercise devices – Involving user translation or physical simulation thereof – Stair climbing
Reexamination Certificate
2003-04-29
2004-03-30
Crow, Stephen R. (Department: 3764)
Exercise devices
Involving user translation or physical simulation thereof
Stair climbing
Reexamination Certificate
active
06712739
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to stair climbing exerciser that has an adjusting member connected between two links so as to easily adjust the height of the two links simultaneously.
BACKGROUND OF THE INVENTION
A conventional stair climbing exerciser is disclosed in FIG.
11
and generally an H-shaped frame
11
and a protrusion
14
extends from one of tow transverse bars
12
of the frame
11
. Two pedals
15
each have one end pivotably connected to the protrusion
14
by a shaft
13
and each pedal
15
is connected to a cylinder
16
which is pivotably connected between the pedal
15
and the bar
12
. The user steps on the two pedals
15
and exerts a downward force to overcome the resistance of the cylinder
16
. Another conventional stair climbing exerciser is disclosed in FIG.
12
and includes a frame with two triangular lugs and a swing member
351
is pivotably connected between the two lugs. Two pedals
34
are pivotably connected to two respective link assemblies
35
, each of which includes two links which are pivotably connected between the swing member
351
, the lugs and the pedals
34
. An adjusting member
37
is threadedly extended through the swing member
351
and a link
36
of one of the link assemblies
35
. A knob
39
is located at a top of the adjusting member
37
. The user may rotate the knob
39
together with the adjusting member
37
to adjust the height that the link assembly
35
on the left side can be moved. This can only adjust the height of one of the two link assemblies
35
and the hole defined through the link
36
makes the link
36
to be weak in structural strength.
The present invention intends to provide a stair climbing exerciser that has an adjusting member connected between two pedals so as to adjust the two pedals within one action.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided a stair climbing exerciser which comprises a frame including two bars and two rails connected between the two bars. Two links each have a first end pivotably connected between two lugs on the two rails and two damping members each have a first end pivotably connected between the two rails and a second end of each of the damping members is pivotably connected to a second end of the link corresponding thereto. Each link has a bolt connected thereto and an adjusting member is rotatably connected to the two bolts so that the two links are pivoted by rotating the adjusting member. Two pedals are pivotably connected to the two respective second ends of the two links.
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, a preferred embodiment in accordance with the present invention.
REFERENCES:
patent: 5256118 (1993-10-01), Chen
patent: 5298002 (1994-03-01), Lin
patent: 5807210 (1998-09-01), Devlin
patent: 6595899 (2003-07-01), Liang
Crow Stephen R.
Rosenberg , Klein & Lee
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