Exercise devices – User manipulated force resisting apparatus – component... – Utilizing inertial force resistance
Patent
1992-02-25
1992-11-17
Crow, Stephen R.
Exercise devices
User manipulated force resisting apparatus, component...
Utilizing inertial force resistance
482 70, 482 52, A63B 2122
Patent
active
051638886
ABSTRACT:
A resistance device is disclosed for use with exercise equipment such as cross-country ski simulators, stair climbing machines, stationary bicycles and the like. The restraint device includes a rotating assembly disposed about a supporting member such as a rod. The rotating assembly includes a cylinder which is connected by means of a flexible cable or the like to foot pads of the ski simulator or step members of the stair climbing machine, for example, such that to-and-fro or up and down (bi-directional) motion of the exercising machine is converted into angular velocity of the rotating assembly. The rotating assembly includes weighted pivoting members arranged to pivot with respect to the assembly such that with increasing angular velocity of the rotating assembly, the pivots are forced radially outward thereby smoothly increasing the moment-of-inertia of the device. Such moment-of-inertia of the device increases with increasing angular velocity thereby causing the resistance device to increasingly resist increasing velocity of the to-and-fro motion or up and down motion of the exercise machine. Advantageously, the resistance device offers low resistance to motion at low velocity, for example at the start of a stroke of the ski machine, but higher resistance and higher inertia when the stroke is moving at higher speed.
REFERENCES:
patent: 3756597 (1973-09-01), Monti
patent: 4728099 (1988-03-01), Pitre
patent: 4900017 (1990-02-01), Bold
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