Exercise devices – User manipulated force resisting apparatus – component... – Utilizing frictional force resistance
Patent
1995-01-23
1996-11-12
Apley, Richard J.
Exercise devices
User manipulated force resisting apparatus, component...
Utilizing frictional force resistance
482 1, 482 5, 482 4, 482118, 482903, A63B 2300
Patent
active
055734863
ABSTRACT:
It is critical to prevent muscular damage to an athlete in a machine that produces a restraining force that must be overcome in the initial part of an exercise stroke. This is achieved by a precise and accurate type of control system by which the athlete safely and surely control the initial restraining force magnitude. With a reliable vernier type control device the athlete then may "inch-by-inch" increase the restraining force as the muscles become able to overcome greater forces in the manner the proverbial strong man lifts a calf each day so that he can lift a full grown cow eventually. In a preferred embodiment of this vernier type control the restraining device comprises an electromagnet with a retained magnetic member coupled to the athlete by an intermediate muscular operated linkage. The vernier restraining force adjustment device is an electrical current control rheostat coupled in a current supply line for the electromagnet, that accordingly provides the athlete with a self controlled device permitting the athlete to tone muscular development in a safe and effective manner without the danger of physical muscle damage that is likely if the magnetic restraining force becomes too strong.
REFERENCES:
patent: 4537396 (1985-08-01), Hooper
patent: 4678184 (1987-07-01), Neiger et al.
patent: 4822032 (1989-04-01), Whitmore et al.
patent: 4979733 (1990-12-01), Prud'Hon
patent: 5176599 (1993-01-01), Beliakov
Apley Richard J.
Brown Laurence R.
Richman Glenn E.
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