Undertaking
Patent
1989-04-12
1990-07-03
Bahr, Robert W.
Undertaking
272 67, 272128, 63 3, A63B 21065
Patent
active
049384775
ABSTRACT:
A hollow ring is formed in two parts hinged together at one end of each half and detachably secured together at the other ends of each half by a clasp to form a torus. A pair of spaced apart pads are situated on the inner surface of one portion and a diametrically adjustable pad is situated centrally of the other half and also on the inner surface. The ring engages around the wrist of the user with pads holding the ring in position yet preventing pressure from occurring on the wrist veins and arteries. One or more balls of steel or other material may be placed in each torus and roll around the rings while exercising by rotating the arms and the like. The degree of effective weight is controlled by the number and weight of the balls.
REFERENCES:
patent: 1604333 (1926-10-01), Anderson
patent: 2475656 (1949-07-01), Bidak
patent: 2819081 (1958-01-01), Touraine
patent: 3019019 (1962-01-01), Forte
patent: 3294399 (1966-12-01), Cugliari
patent: 4036491 (1977-07-01), Vierra et al.
patent: 4356915 (1982-11-01), Phillips
patent: 4480831 (1984-11-01), Muller-Deinhardt
patent: 4489935 (1984-12-01), Lusk
patent: 4632391 (1986-12-01), Orak
patent: 4768688 (1988-09-01), Harrigan
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