Exercise devices – Involving user translation or physical simulation thereof – Stair climbing
Reexamination Certificate
2002-03-19
2004-02-17
Crow, Stephen R. (Department: 3764)
Exercise devices
Involving user translation or physical simulation thereof
Stair climbing
C482S057000
Reexamination Certificate
active
06692410
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to healthy machines and more particularly to a compact step simulator with double inertial wheels which are rotated by treading up the pedals without needing external power source.
Typical step simulator in the market includes two types. The first type is a compact step simulator
60
(as shown in
FIG. 1
) which comprises a vertical post
61
with a handle on the top and an axis perpendicular to the lower end, a pair of pedals
62
and a pair of hydraulic struts
63
under the pedals
62
. A front cylinder support
64
on the ground and centrally connects to the lower end of the vertical post
61
. A rear cylinder support
65
on the ground connects to the lower portion of the vertical post
61
through tilt plate
66
. The pedals
62
each has a front end
67
rotatably and respectively connected to the free ends of the axis. The hydraulic struts
63
each has one end connected to the inner periphery of the front cylinder support
64
and the other end connected to an underside of the pedals
62
respectively. This compact step simulator
60
has a small size or volume that is easy to move and/or packing for transportation. But the feet of the user can only move up and down so that the momentum is limitative and monotonous.
The second type is an elliptic shaped locus step simulator
70
(as shown in
FIG. 2
) which comprises a L-shaped rack
71
, several positioning rods
72
,
73
and
74
combined to pivot a main wheel
75
and a subordinate wheel
76
which is actuated by the main wheel
75
through a belt
751
, a pair of cranks
77
having their front ends pivoted on the opposite sides of the main wheel
75
and their rear ends
771
respectively pivoted on a roller
772
, and a pair of pedals
78
respectively secured to the top of the rear ends
771
of the cranks
77
. When the feet of a user stand on the pedals
78
and tread on it, the cranks
77
move up and down and pedals move to follow an elliptic shaped locus. The momentum is therefore increased. Because of that the subordinal wheel
76
is indispensable to slow down the rotation speed of the main wheel
75
, the volume of this step simulator should be enlarged. Thus, it is inconvenient to pack for transportation.
SUMMARY OF THE PRESENT INVENTION
The present invent ion has a main object to provide a compact step simulator with double inertial wheels which either provides a small size and/or provides an elliptic shaped locus movement for the pedals in order to achieve better exercise result.
Another object of the present invention is to provide a compact step simulator with double inertial wheels in which a speed governor is provided to control the rotation speed of the inertial wheels.
Further object of the present invention is to provide a compact step simulator which is easy to move and convenient to pack for transportation.
Accordingly, the compact step simulator of the present invention comprises generally a rack combined with a front cylinder stand, a rear cylinder stand, a tilt plate connected the front and rear cylinder stands and a vertical post projected upward from the middle of the front cylinder stand which includes a handle, an indicator and a speed governor on the top a pair of inertial wheels coaxially and juxtaposedly connected to an axis in a hub which is positioned at the junction point between the vertical post and the tilt plate, a H-shaped resistance plate or brake pivoted to an axial tube under the tilt plate and connected to the speed governor through a wire having which has a friction surface contacted to the rim of the inertial wheels respectively, a pair of pivots spacedly projected upward from the top of the rear cylinder stand each having a roller rotatably secured to the top, a pair of pedal seats each having an axial hole in front end respectively pivoted on a pair of arbors at outer surface of the inertial wheel abutting the rim and a rear end sliding about the top of the rollers of the pivots and a pair of pedals respectively secured to the top of the pedal seats. When a user treads the pedals, the inertial wheels begin to rotate and the eccentric arbor causes the pedal to follow an elliptic shaped locus to move in order to achieve the feet exercise result.
REFERENCES:
patent: 5762588 (1998-06-01), Chen
patent: 5779599 (1998-07-01), Chen
patent: 6045488 (2000-04-01), Eschenbach
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