Exercise devices – Striking
Patent
1993-07-19
1994-08-30
Crow, Stephen R.
Exercise devices
Striking
482 87, A63B 6434
Patent
active
053422678
ABSTRACT:
An improved striking device is provided as including a main post having two main longitudinal slots. An insert post having an outside diameter that is less than the inside diameter of the main post is provided. A striking surface is provided that is attached to an arm which in turn is attached to an arm housing. The arm housing has a first housing end and a second housing end. The arm housing is placed around the main post and the second housing end rests upon a support axle passing through the insert post. The first housing end includes a cam surface having two peaks located on opposite sides thereof and two valleys located on opposite sides thereof with each of the two valleys disposed between each of the two peaks. A cam follower is included which is retained in contact against the cam surface by a pair of springs. During rotation of the arm housing the cam follower cooperates with the cam surface of the arm housing to provide a first striking position and a second striking position that are each located one hundred and eighty degrees of rotation apart with respect to each other. As the arm housing rotates the cam surface extends the cam follower which is turn extends the pair of springs in proportion to the contour of the cam surface. If sufficient force is imparted to the striking surface, the arm housing is urged away from the first striking position, and indexes into the second striking position.
REFERENCES:
patent: 808528 (1905-12-01), Finneg et al.
patent: 2818255 (1957-12-01), Ponza
patent: 4175744 (1979-11-01), Llewellyn
patent: 4508339 (1985-04-01), Llewelly
patent: 4749184 (1988-06-01), Tobin
patent: 4913419 (1990-04-01), McAuliffe
patent: 5277679 (1994-01-01), Wells
Adams Ronald L.
Blomquist James E.
Crow Stephen R.
Donnelly Jerome
Rinne, Jr. Risto A.
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