| 摘要 |
PROBLEM TO BE SOLVED: To provide an air driver capable of assuring speed and safety in returning of elevation of a piston, and obtaining a high-performance pneumatic nail driving machine. SOLUTION: A kind of air-driven type driver having a trigger is equipped with a cylinder inside a driver body and a dish-shaped piston provided at a top portion of the cylinder, the piston for a nail driving provided inside the cylinder, and a lower slider valve mounted to the outer periphery of the cylinder. When the trigger is pulled, the dish-shaped piston is moved upward by a drive of the high-pressure air, the high-pressure air is introduced in the cylinder, and the nail driving piston performs the nail driving operation. When the trigger is released, an upper slider valve is moved upward by the drive of the high-pressure air and the lower slider valve is quickly moved downward. COPYRIGHT: (C)2008,JPO&INPIT
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