Apparatus for practicing art of attack and defense

Details Apparatus for practicing art of attack and defense Apparatus for practicing art of attack and defense

2007-06-05

2007-06-05

Donnelly, Jerome (Department: 3764)

Exercise devices

Striking

Having bottom weighted rocker support

C482S083000

Reexamination Certificate

active

11263933

ABSTRACT:
An apparatus for practicing art of attack and defense includes a base, an elastic force regulating set and a cylindrical member. The elastic force regulating set further includes a spring, a hollow cylinder and a Y-shaped hollow post. The hollow cylinder and the Y-shaped hollow post adjustably engage with each other with screw threads and distance between the hollow cylinder and the Y-shaped hollow post is capable of being regulated to create elastic force change for providing a specific elastic force needed by the user. The space in the base can be placed with a solid or injected liquid to offer steady center of gravity against being hit down. Further, the cylindrical member, the hollow cylinder and the Y-shaped hollow can be received in the base conveniently after use.

REFERENCES:
patent: 1703012 (1929-02-01), McNamara
patent: 2197545 (1940-04-01), Bachman et al.
patent: 3022072 (1962-02-01), Zinnow
patent: 4903966 (1990-02-01), Liao
patent: 5921895 (1999-07-01), Lynch et al.
patent: 6090018 (2000-07-01), Laudenslager et al.
patent: 6183399 (2001-02-01), Chen
patent: 6790167 (2004-09-01), Carlin et al.

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