Resistance exercise machine with series connected resistance pac

Details Resistance exercise machine with series connected resistance pac Resistance exercise machine with series connected resistance pac

1998-08-07

2000-10-03

Donnelly, Jerome W.

Exercise devices

User manipulated force resisting apparatus, component...

Utilizing frictional force resistance

482116, 482137, 482114, A63B 21012

Patent

active

061265802

ABSTRACT:
A resistance mechanism suitable for resistance exercise equipment. Resistance packs include circular rims and central hubs connected by deformable spokes. The packs are stacked in pairs with the rims in each pair pinned together and the hubs rotatable relative to one another. Each hub has a spline connection with the hub of the next resistance pack in the adjacent pair. This provides a series arrangement of the resistance packs which allows a long extension of the actuator with the spokes of each pack being deformed only slightly. A spiral pay out pulley for the cord assists in avoiding varying resistance with extension of the cord.
A preload mechanism which allows an initial preload resistance to be set includes a large gear connected with the stack of resistance packs and a smaller gear meshing with the large gear. A pivotal pawl urged against the teeth of the large gear allows the gear to turn in a direction to initially deform the spokes to preset the initial resistance level. The pawl locks the gear against rotation in the opposite direction. A visual indicator operated by the smaller gear aligns with graduation marks on a scale to indicate the level of the initial resistance.

REFERENCES:
patent: 2868026 (1959-01-01), Finehout et al.

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