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An improved torsional exercise device which allows for a graduated exercise program to build and increase the muscles of the hands, wrists, and forearms through relative rotation of handle grips against a torsion spring of varying tension and which is portable, simple in design, and inexpensive to c

An improved torsional exercise device which allows for a graduated exercise program to build and increase the muscles of the hands, wrists, and forearms through relative rotation of handle grips against a torsion spring of varying tension and which is portable, simple in design, and inexpensive to construct.

대표청구항 ▼

An exercise device comprising a pair of cylindrical handle grips wherein the first cylindrical handle grip is reduced via a shoulder to form a cylindrical shape of smaller diameter, said cylindrical shape having a plurality of holes in the circumference thereof and adjacent to the handle grip; said

An exercise device comprising a pair of cylindrical handle grips wherein the first cylindrical handle grip is reduced via a shoulder to form a cylindrical shape of smaller diameter, said cylindrical shape having a plurality of holes in the circumference thereof and adjacent to the handle grip; said cylindrical shape further reducing via a second shoulder to form a cylindrical spindle; a torsion spring coaxially surrounding said spindle and having one end engaged in a notch or hole in said second shoulder adjacent to the cylindrical spindle; said second cylindrical handle grip being assembled coaxially in sleeve-like relation surrounding the cylindrical shape and cylindrical spindle of said first handle grip and having a slot partially extending around the circumference of said second handle grip near the end of said second handle grip surrounding said cylindrical shape of said first handle grip and in alignment with the plurality of holes in said cylindrical shape; a counterbore and a notch or hole at the end of said second handle grip opposite said slot; said counterbore engaging the free end of said cylindrical spindle in support thereof and said notch or hole engaging the second end of said torsion spring; and a torsional adjustment means comprising a separate pin being of a length approximating the diameter of the second cylindrical handle grip and of a diameter approximating the diameter of said plurality of holes in the cylindrical shape of the first cylindrical handle grip, said separate pin serving to hold said first and said second cylindrical handles in assembled condition, to maintain a desired tension in said torsion spring, and further permitting the second cylindrical handle grip to rotate with respect to said first cylindrical handle grip.