Combustion-engined setting tool
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United States of America Patent
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Jul 19, 2011
Grant Date -
Oct 8, 2009
app pub date -
Mar 31, 2009
filing date -
Apr 1, 2008
priority date (Note) -
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Abstract
A combustion-engined setting tool (10) for driving fastening elements in a workpiece includes a combustion chamber (11), a drive piston (15) displaceable in a piston guide (17) and driven by expanding gases produced in the combustion chamber (11), and a device for returning the drive piston (15) in its initial position as a result of pressure difference between chambers formed on opposite axial sides of the piston head (115), and including a pump (20).
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