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US 6,746,373 B1Granted
Hand exercise apparatus
OwnerJohn B. Bohmerinventor
Life of this patent
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Abstract
An exercise device is held in first one hand and then in the other hand, while the second hand is exercised by screwing nuts in on threaded rods against a spring resistance. Both right hand and left hand threads are provided so that exercise of clockwise and counterclockwise motions are required. The nuts have different outside diameters so that the gripping of the nuts will be at different positions to enhance the experience. Also provided are springs of different tensions to adjust the resistance to rotation.
Claims6
A handheld apparatus for the fingers, thumbs, hands, and wrists of a person, the apparatus comprising:
- a) a base;
- b) a plurality of threaded rods, each rod having a first end affixed to the base and a second end extending outwardly from the base;
- c) a spring encircling each rod;
- d) a plurality of nuts, with a nut threadedly mounted on each rod and engaging the spring, such that rotation of the nut in a first direction compresses the spring, and rotation in a second direction reduces compression of the spring;
- e) the plurality of rods extending from the base in at least two directions including at least two rods with a right hand thread and at least two rods with a left hand thread;
- and
- f) the plurality of nuts including at least two nuts with a first outer diameter and at least two nuts with a second outer diameter, and in which the second outer diameter is greater than the first outer diameter.
4 more elements
Dependencies are inferred from the claim text.