Apparatus for practicing art of attack and defense
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United States of America Patent
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Jun 5, 2007
Grant Date -
May 3, 2007
app pub date -
Nov 2, 2005
filing date -
Nov 2, 2005
priority date (Note) -
Expired
status (Latency Note)
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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.
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