Fastening tool and a returning spring therefor
作者： Axel Ziegler , Gerd Dr. Kellner
DOI:
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摘要: The tool comprises a reciprocating drive piston (4) actuated by propulsive charge. A compression spring (10) is made of an elastically deformable material for returning the to its original position after bolt fitting process. rod (9) has reduced diameter which over at least part length enclosed sleeve-form return located between element (7) not contributing movement piston, and itself.
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