1984-08-23
1987-08-04
Apley, Richard J.
Undertaking
272 67, 272 72, 272DIG4, A63B 2100, A63B 500
Patent
active
046841253
DESCRIPTION:
BRIEF SUMMARY
The present invention generally relates to a muscle building apparatus by means of which the different muscles of the body may be trained and built up. Previously known muscle building apparatus generally have been formed as training devices operating over weight loads or springs.
The weight load training devices may be disc loading bar bells or dumb bells of different weights which are lifted in different ways. The weight training devices also may be load variable or formed so as to be loaded with different large weights and so that the devices may be handled by the training person standing, lying or in any other position for training of the different types of muscles.
The load training apparatus are disadvantageous from several respects. In most cases the apparatus are formed so that the weights give a constant load both in lifting position and in lowering position. The muscles of the body, on the contrary, have different power ability in the hand, the arm, the leg or any other part of the body depending on the fact, that body lever arm varies during the load lifting work. Therefore the muscle in most load lifting work is loaded by a relatively higher force at the beginning and at the end of the force application than at the mid portion of the load lifting movement. This may cause over-strain and may hurt the training person. Further the muscles must operate with practically the same force during the lowering of the weights. The most serious disadvantage in the weight load training apparatus, however, is the risk that the training person is hurt if he or she lets the weight go, possibly because the weight slips or slides but also if the training person cannot manage to hold the weight. Weight training apparatus generally is also noisy and rattles.
The spring training apparatus to some extent is disadvantageous from the same viewpoint as the weight training apparatus. Springs which may be tension springs, pressure springs, rubber springs or similar springs give a constant force and therefore generally load the muscle with a relatively higher force at the beginning and at the end of the force application of the training person than at more central parts of the force operating movement. Also the springs load the muscle with substantially the same strong force when returning to the initial position, and also in spring apparatus there is a risk that the training person is hurt when he or she slips or cannot restrain the spring. Further, some weight training apparatus or spring training apparatus are formed for a constant load and therefore are suited only for some persons. For a progressive training of muscles it therefore may be necessary to provide a large number of training apparatus for different loads. Also most of the previously known apparatus are formed for training only of special muscles, for instance the arm muscles or the leg muscles or the back muscles. For an overall training, for instant in a training institute, in hospitals, in medical gynmastic institutions etc there may be a need for a large number of different training apparatus to meet normal training needs.
The object of the invention therefore is to solve the problem of providing a simple and overall useful muscle building apparatus which occupies a small space, which is formed so that there only is a very little risk, if any, to hurt the training person, which operates silently, which is formed isokinetically, which can be adjusted for different forces or types of actuation and which can be combined and varied within very wide ranges for practically any type of muscle training.
According to the invention the muscle building apparatus comprises a lever arm, which is rotatably mounted in a carrier and which is connected to a single acting or double acting spring means, especially a gas spring means, and which readily can be adjusted for different forces and different directed force actuation. In a special embodiment of the invention the upper part of the gas spring is connected to the lever arm whereas the opposite end of the gas spring i
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Apley Richard J.
Crow S. R.
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