Exercise devices – User manipulated force resisting apparatus – component... – Having common force transmitting support frame for user and...
Patent
1996-10-07
1998-09-08
Apley, Richard J.
Exercise devices
User manipulated force resisting apparatus, component...
Having common force transmitting support frame for user and...
482100, 482137, 482142, A63B 2100
Patent
active
058038833
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention is related to a device for toning up the muscles, i.e. strengthening the muscle, in the front and back side of the thigh, especially the quadriceps femoris and biceps femoris.
BACKGROUND OF THE INVENTION
Devices currently available for leg exercising strengthen up the muscle primarily in the front side of the thigh by a forward kicking motion. Typically such a device is provided with a solid fixed seat and a swinging arm connected to one or more weights. A person exercising on such a device sits with his knees folded with the lower part of his shins resting on the free end. i.e., non weighted end, of the arm swinging arm. As the person exercising moves his legs forward, the swinging arm swings outward, against the traction of the weight, from the nearly perpendicular position in a bow shaped motion, into a horizontal position. This motion, damped by the tension of the weights, puts pressure on the lower part of the thigh at the edge of the seat and the hardened thigh muscles act as a two-armed lever on the edge of the seat. During this swing motion of the legs, the trunk of the person exercising tends to lift over the seat to counter the pressure exerted on the swinging arm, but is prevented from doing so by pulling on the hands holding handles on the sides of the seat and/or by fastening of the body to the seat with a belt. This tendency of the trunk to lift over the seat causes problems with use of other muscle groups during the exercise and an unpleasant psychological sensation.
For strengthening of the back side of a thigh exercise devices enabling the exerciser to "kick back" are usually employed. Such kick back devices fall into three categories:
One type, which requires the person to be in a standing position, has the disadvantage of exercising only one leg at a time, while the other leg is use to support and stabilize the person's body.
Devices of the second type are designed for kicking back both legs as the person exercising is laying on his belly. A notable disadvantages of this type of leg strengthener is the difficult of fixation of the body requiring fixation with the hand. This type also tend to inhibit breathing as the trunk is pulled to lift the calf of the leg causing an unpleasant feeling.
The third group of the devices is for kicking back in sitting position, and has the disadvantage that the front part of the thighs, which are closely over the knees, rest on a solid thigh grip, being the knees downward. Thus, the front side of the thighs and the muscle of the belly are more exerted, which is particularly a disadvantage for the person recovering from surgery in or near the abdominal area.
It is an object of the present invention to provide a device for toning up the muscle groups of the front and back side of the thighs without the disadvantages of the devices of the art.
SUMMARY OF THE INVENTION
The present invention provides for a strengthening device for the muscle groups of the front or back side of the thighs of a human comprising: perpendicular to the base; with an action rest, and swinging arm; rotational axle acts through the kinematic connecting means to lift the weight set; the horizonal base of the rigid frame so that the seat is free to move within a fixed range, forward or backward with respect to the swinging arm and in a plane parallel to the vertical part of the rigid frame during operation of the device.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention may be understood by reference to the following description in conjunction with the following figures, in which:
FIG. 1 shows a side view the strengthening device of the present invention in the forward kicking version showing the frame, weights, movable arm, sliding seat, and connecting cable.
FIG. 2 shows a side view the strengthening device of the present invention in the backward kicking version showing the frame, weights, movable arm, sliding seat, and connecting cable.
DESCRIPTION OF THE PREFERRED EMBODIMENT
As used herein with regard to muscles the terms "toning," "
REFERENCES:
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patent: 4502681 (1985-03-01), Blomqvist
patent: 4542900 (1985-09-01), Ray
patent: 4765616 (1988-08-01), Wolff
patent: 5011142 (1991-04-01), Eckler
patent: 5020797 (1991-06-01), Burns
patent: 5209223 (1993-05-01), McGorry et al.
patent: 5338274 (1994-08-01), Jones
Patrylak Jan
Pyrta Jiri
Apley Richard J.
Mulcahy John
Vojtech Druska
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