Exercise devices – User manipulated force resisting apparatus – component... – Utilizing frictional force resistance
Patent
1992-08-21
1993-10-26
Crow, Stephen R.
Exercise devices
User manipulated force resisting apparatus, component...
Utilizing frictional force resistance
A63B 21015
Patent
active
052561240
ABSTRACT:
An exercisor is described comprising two cranks journaled from opposite directions into a pair of independently operating friction brakes within a central housing. However, while the friction brakes of each crank are independently operatable via a crank arm, they are interconnected by a common friction biasing mechanism. Such mechanism is also housed within the central housing between the friction brakes. The friction biasing mechanism includes a wedge block having slanted side surfaces in contact push blocks of the friction brakes. The wedge block is provided with transverse movement relative to the central housing by rotation of an activation rod (by the user), such rod having an axis of rotation that is normal to the axis of symmetry of the central housing. Such transverse movement, in turn, is converted to bi-directional travel of the push blocks toward the ends of the central housing where the cranks are positioned. As a result, there is generated within each friction brake a bi-directional pressure that resists rotation of the crank operatively attached to the friction brake in an uniform manner.
REFERENCES:
patent: Re23744 (1953-11-01), Magida
patent: 3640525 (1972-02-01), Proctor
patent: 4684126 (1987-08-01), Dalebout et al.
patent: 4822028 (1989-04-01), McLellan et al.
patent: 4869492 (1989-09-01), Joutras
patent: 5158519 (1992-10-01), Hughes
Crow Stephen R.
Messner Harold D.
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