| 摘要 |
PROBLEM TO BE SOLVED: To provide a hammer which can intentionally carry out its operation by concentrating a force from its grip portion or a centrifugal force on an inscribed triangle in an inscribed circle of a triangle, and also can prevent injuries and failures of articles caused by an impact miss. SOLUTION: In the hammer, a uniform force can be achieved in using the hammer by utilizing the uniformity of the force applied to the inscribed triangle in the inscribed circle of the triangle by replacing a circular shape 3 with a triangular shape 4. Because the impact force to be applied in using the hammer becomes uniform, the impact-ability and the operability can be intentionally achieved without relying upon intuition. COPYRIGHT: (C)2007,JPO&INPIT
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