Friction resistance exercising device
OwnerSteve P. Kushnerinventor
Life of this patent
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Abstract
A frictional exercising device includes a shell body which can be attached to a substantially stationary object, for instance a door, a doorjamb or a floor. A core cylinder is rigidly mounted in the shell body. The core cylinder has a wall with an arcuate friction surface having bumps formed thereon. A space is defined between the friction surface and the shell body through which a flat strap extends. The flat strap is partially wound around the core cylinder and hugs the friction surface. When one of the ends of the flat strap is pulled and a resistive force is applied at the other end, a frictional force increases between the friction surface and the flat strap.
Claims8
An exercising device, comprising:
- a shell body defining an interior space and having attachment means for attaching said shell body to a substantially stationary object;
- `a core cylinder rigidly mounted in said interior space of said shell body, with said shell body surrounding a substantial portion of said core cylinder;
- said core cylinder having a wall with an arcuate friction surface;
- said friction surface and said shell body defining a space therebetween;
- and
- a flat strap having two ends and being partially wound around said core cylinder and hugging said friction surface, such that when one of the ends of said flat strap is pulled and a resistive force is applied at the other end, a frictional force results between said friction surface and said flat strap, which frictional force is a function of the resistive force;
- and bumps formed on said arcuate friction surface for providing a resistive form-lock between said friction surface and said flat strap when said flat strip is pulled, said bumps being formed of the same material as said core cylinder friction surface.
Dependencies are inferred from the claim text.