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    • 20. 发明专利
    • AIR HAMMER
    • JP2001287175A
    • 2001-10-16
    • JP2000108345
    • 2000-04-10
    • AHRESTY CORP
    • MORISHIMA HIROSHI
    • B25D9/04F15B15/14
    • PROBLEM TO BE SOLVED: To provide an air hammer that can output a given striking force without a dimensional increase, can relieve shocks of an object, can stabilize the output action even with its cylinder installed in an upward and a downward position, and can easily vary the timing of striking the object. SOLUTION: An air cylinder A is so constructed that the interior of a cylinder body 2 is divided into an accumulation chamber 4 and an output chamber 5 by a partition wall 3, which has a through hole 9 connecting the accumulation and output chambers, and that an output piston 8 arranged in the output chamber has an adjusting rod 12 projected for retractile and airtight insertion into the through hole of the partition wall. Forward of an output rod 1 of the air cylinder in the direction of projection, a striking rod C is supported for axial reciprocation in a bracket B. A clearance of several centimeters is provided between a cushioning flange 15 at the base end of the striking rod and an opposite abutting face 16 of the bracket.