Venting check valve for combustion nailer
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United States of America Patent
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Sep 22, 2009
Grant Date -
Jul 17, 2008
app pub date -
Mar 13, 2006
filing date -
Mar 15, 2005
priority date (Note) -
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Abstract
A combustion nailer configured for reducing intake of contaminated air during operation, includes a combustion engine having a cylinder with a piston reciprocating between a prefiring position and a fully extended position, and at least one air port in the cylinder below the fully extended position. The at least one air port is provided with a venting check valve configured so that the discharge volume from the cylinder out the at least one air port is greater than the inflow.
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