| 摘要 |
An impact device has a handle attached to an impact head. A weight is reciprocatably mounted on a guideway on the impact head. The weight can move along the guideway between a first position and a second position in response to motion of the head. A yielding member such as a spring or elastomeric element can be mounted at the impact head. The weight can recoil against the yielding member in response to motion of the head. The impact head can hit an object in such a manner as to move the weight in a straight line from the first position to the second position.
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