Exercise devices – Hand – wrist – or finger – Involving wrist rotation
Patent
1995-03-09
1995-10-03
Crow, Stephen R.
Exercise devices
Hand, wrist, or finger
Involving wrist rotation
482124, 482128, 482908, A63B 500
Patent
active
054547695
ABSTRACT:
A wrist and forearm exercise apparatus includes a forearm support unit for extension of a forearm of a user therethrough, a grip assembly mounted swingably on the forearm support unit for gripping by a hand of the user, and a resistance adjustment device. The forearm support unit includes a tubular body having a peripheral wall with an intermediate portion formed with a stepped groove. The stepped groove includes several L-shaped sections, each of which has an axial portion and a radial portion. A coiled compression spring is accommodated within an adjustment tube which has a front end portion mounted slidably within the tubular body. A radial pin is fixed on the adjustment tube and engages the stepped groove. Movement and rotation of the adjustment tube relative to the tubular body moves the pin in the stepped groove so as to change the compressed extent of the spring, thereby adjusting the resistance to the swinging movement of the grip assembly on the forearm support unit.
REFERENCES:
patent: 4513962 (1985-04-01), Robson et al.
patent: 4589655 (1986-05-01), Amnon
patent: 4726580 (1988-02-01), Batiste et al.
patent: 5100126 (1992-03-01), Liou
patent: 5407407 (1985-04-01), Lin
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