Driving machine
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United States of America Patent
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-
May 11, 2010
Issued Date -
N/A
app pub date -
Mar 13, 2008
filing date -
Mar 14, 2007
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A driving machine includes a cylinder, a piston fitted into the cylinder in a reciprocatingly movable manner, a driver connected to the piston, a bumper provided in the bottom portion of the cylinder, a housing, a return air chamber, a fastening member feed piston movable backward or forward by supplying compressed air within the return air chamber from an air chamber passage hole 9 through air passages and to a fastening member feed cylinder or discharging such compressed air from the fastening member feed cylinder, a return spring for energizing the fastening member feed piston, and a feed pawl mounted on the leading end of the fastening member feed piston. In the driving machine, between the return air chamber and the fastening member feed cylinder, a filter portion is provided having a projection shape and small holes.
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