Wrist activator

Details Wrist activator Wrist activator

1980-12-11

1983-03-22

Johnson, Richard J.

Undertaking

272128, A63B 2300

Patent

active

043772820

ABSTRACT:
A wrist exercise apparatus, particularly adapted for use by an athlete such as a baseball pitcher, is disclosed. The exercise apparatus has a weighted, elongated, rectangular frame which is adapted to be grasped by the pitcher and moved in a simulated pitching motion. The frame includes side members, a weighted cross member displaced to one side of the plane in which the frame lies at one end, a wrist-backing cross member at the other end, and a transverse hand grip intermediate the two ends which is longitudinally adjustable to accommodate variations in the length of the user's hand.

REFERENCES:
patent: 1523900 (1925-01-01), Rittenhouse
patent: 1658108 (1928-02-01), Vaughn
patent: 2396106 (1946-03-01), Kusznir
patent: 2850748 (1958-09-01), Read
patent: 3445109 (1969-05-01), Kolbel
patent: 3497214 (1970-02-01), Kusznir
patent: 3518024 (1970-06-01), Wilson
patent: 3874660 (1975-04-01), Brethen
patent: 4039183 (1977-08-01), Sakurada
patent: 4109908 (1978-08-01), Pugh
patent: 4327908 (1982-05-01), James

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