Undertaking
Patent
1986-09-04
1989-02-14
Friedman, Carl D.
Undertaking
272134, 272144, A63B 2300
Patent
active
048041793
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to an improved exercise machine and more particularly to a machine for developing and conditioning various parts of the body which on one hand can be folded for transportation on wheels and/or storage yet, on the other hand, has a combination of exercise stations enabling a broad range of exercises to be performed on the one machine.
A multiplicity of combination exercise devices are presently known and used.
The simplest of of these combination devices are those which allow the performance of only a few exercises. They generally comprise a basic exercise bench which is usually adjustable with a leg exercise machine usually at the foot of the bench. Resistance weights can be attached to the leg machine depending upon the amount of resistance required by the user. Also a barbell support means is generally adapted to the machine. These devices limit the scope of the body exercises which can be performed.
The next class of combination multi-gym devices contain an additional attachment known as a dip bar attached to telescopic supports which can also be used as squat racks allowing for an increased number of exercises using a barbell supported by a saddle adjacent each of the dip bars. Although it is claimed by the manufacturers of these multi-gym devices that a persons whole body can be exercised with these machines they are not technologically advanced by comparison to the present invention as they do not provide the practical benefits of the free weight concept in body building. Modern day body building demands precision machines which can allow the resistance provided by the weights at each station to be correctly imposed commensurate with the abilities of a particular muscle when it is in a particular exercise mode. Improperly applied weight resistance can lead to a decrease in efficiency of muscle building from exercise.
The more advanced combination multi-gym devices also have attached to them a lat machine which in combination with dead weights at the end of a pulley allow exercise of muscles in the upper torso region of the body and in particular the arms.
The manufacturers and distributors of these lat machines boast simulated free weight motion of the resistance weights as the exercise is carried out, however, the desired concept in weight lifting and muscle building is actual rather than simulated free weight motion wherein drag from the dead weights which are usually pin weights is eliminated and conterweight resistance to the muscle is correctly applied.
The leg machines of the more simple combination multi-gym devices also rely on the dead weight principle to provide resistance for the leg muscles when performing the various leg exercises.
As with the lat machines of the prior art dead weight drag is also a problem with the leg machine as the resistance is not efficiently applied to the leg muscles throughout the range of motion.
In weightlifting exercises, the inertia or inertial resistance of the weight load must first be overcome before the exercise progresses.
Ideally, the resistance weight should be no heavier than the maximum force of the weakest muscle acting in the particular exercise movement to be accomplished.
During an exercise, the amount of force generated during contraction of the muscle varies throughout all the phases of the movement. Consequently, the maximum level of strength of the muscle occurs close to full contraction. In the prior art exercise machines it has been found that for certain exercises, the drag is at a maximum at the commencement of a muscle exercise, when the muscle is usually extended and thus at its weakest. This phenomenon is undesirable and its existance prevents physiologically efficient muscle building.
The presently known multi-gym devices do not allow application of the true free weight concept due to the geometry of the various machines incorporated in the overall device and due to the resistance weight functionality.
Among the more versatile combination multi-gym devices available there are those which incorporate facil
REFERENCES:
patent: 4098502 (1978-07-01), Faust
patent: 4582319 (1986-04-01), Luna
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