Resistance mechanism with series connected resistance packs

Resistance apparatus comprising:

• a discoidal base panel having a center and a substantially circular periphery;
• a plurality of spaced apart walls extending from said base panel adjacent the periphery thereof;
• a resistance element having a hub adjacent to the center of the panel and a plurality of resilient arms extending outwardly from said hub, said resistance element including a plurality of peripheral portions connected with outer ends of said arms to form loops looped around said walls with said peripheral portions bearing against said walls;
• and
• a hub connection connected with said hub and operable to rotate the hub relative to said periphery to stretch said arms and peripheral portions of the resistance element, said arms and peripheral portions resisting stretching thereof to provide a resistance force opposing rotation of said hub relative to said periphery.

A resistance pack comprising:

• a base panel having a periphery and a center and substantially flat opposite sides;
• a pair of resistance elements disposed on said opposite sides of the base panel, each resistance element having a central hub adjacent to the center of said panel and a plurality of arms extending outwardly from said hub and having outer end portions adjacent to said periphery to effect stretching of said arms when said hubs are rotated relative to said panel;
• and
• a hub connection for each hub operable to effect relative rotation between said hub and periphery, said arms resisting stretching thereof to provide a resistance force.

A resistance device for applying a resilient resistive force, comprising:

• a hub;
• a plurality of resilient arms extending outwardly from said hub and having outer end portions;
• and
• a plurality of peripheral portions each extending between the outer end portions of adjacent arms to form with the arms a plurality of loops adapted to be looped around frames, said arms and peripheral portions being stretched when said hub is rotated relative to said frames and the arms and peripheral portions resist stretching to provide a resistive force opposing such relative rotation.

A resistance mechanism for applying a resilient resistive force, comprising:

• a plurality of resistance packs arranged in a stack which includes a plurality of pairs of resistance packs, each resistance pack having a substantially circular rim and a central hub connected with said rim by a plurality of resistance elements acting to resist turning of the rim of each resistance pack relative to the hub thereof;
• a rim connection connecting the rims of the resistance packs in each pair thereof, the hubs of the resistance packs in each pair being rotatable relative to one another;
• a hub connection connecting the hub of one resistance pack in each pair thereof with the hub of one resistance pack in each adjacent pair of resistance packs, the rims of the resistance packs in different pairs which are adjacent being rotatable relative to one another;
• and
• an actuator element coupled with a selected one of said resistance packs, said actuator element being arranged for displacement thereof in a manner to effect relative rotation between the rims and hubs of the resistance packs, with said resistance elements resisting such relative rotation to provide a resistive force opposing displacement of said resistance element.

Resistance apparatus for applying a resilient resistive force, comprising:

• a rotatable resistance mechanism having an undeformed condition, said mechanism being rotatable about an axis from said undeformed condition and resisting deformation to exhibit a resistance force opposing rotation about said axis;
• a pulley connected with said resistance mechanism to transfer rotation thereto upon rotation of the pulley, said pulley having a spiral groove which extends from a small diameter portion of the pulley to a large diameter portion thereof;
• and
• a flexible cord adapted to be pulled, said cord extending in said spiral groove and applying a force on the pulley at increasingly larger diameter portions thereof as the cord is pulled and extended such that said cord applies forces to increasingly larger diameter portions of the pulley as said mechanism is increasingly rotated about said axis by increased extension of said cord.