| 摘要 |
PROBLEM TO BE SOLVED: To provide a hoseless driving machine equipped additionally with an air tank to store compressed air and a pressure reducing valve, in which the weight balance over the whole construction is improved, the body build is made compact, and the working easiness is enhanced. SOLUTION: Through a pressure reducing valve, an air tank 3 is coupled with the tail of a handle 2 installed approximately perpendicularly to the output part 1 approximately in a cylindrical shape, and the air tank 3 is composed of a vertical part 3a protruding at the back of the handle 2 and a horizontal part 3b extending approximately parallel with the handle 2 so that the center of gravity 40 in total is positioned near a grip position 30, and thereby the weight balance is improved and the body build is made compact.
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