Pneumatic fastener driving apparatus with piston holding detent
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United States of America Patent
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Jan 26, 1993
Grant Date -
N/A
app pub date -
May 16, 1991
filing date -
May 16, 1991
priority date (Note) -
Expired
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Abstract
A pneumatic operated fastener driving device having an improved piston, which together with the cylinder form an elastic interference fit connection so that the piston is held from movement until a sufficient air pressure is applied to the piston. The piston has little or no frictional resistance with the inner surface of the cylinder during the driving or return stroke.
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