Pneumatic fastener driving apparatus with an improved valve
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United States of America Patent
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May 4, 1993
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N/A
app pub date -
May 16, 1991
filing date -
May 16, 1991
priority date (Note) -
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Abstract
A pneumatic operated fastener driving device having a trigger valve and an improved main valve with a flexible membrane that controls the flow of compressed air to and from the cylinder. The flexible membrane maintains the main valve close no matter when the tool is connected or disconnect to an air supply line. Further, the main valve including the flexible membrane are designed and constructed to undergo a high number of tool cycles to provide long wear and low maintenance.
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