| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that a light metal piston requires a specified thickness to provide specified strength, a length increases along the moving direction of the piston by an amount of the thickness, a cylinder inevitably becomes longer and a length in the piston moving direction of a driving machine main body, that is, a height increases. SOLUTION: This pneumatic driving machine is lowered in height and lightened in weight by forming the piston 4a of a high strength material the same as that of a driver blade and decreasing the thickness of the piston smaller than the diameter of the driver blade 4. COPYRIGHT: (C)2007,JPO&INPIT
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