Adjustable energy control valve for a fastener driving device
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United States of America Patent
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-
Mar 21, 2000
Issued Date -
N/A
app pub date -
Mar 31, 1997
filing date -
May 18, 1994
priority date (Note) -
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status (Latency Note)
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Abstract
A pneumatic fastener driving device includes an energy control assembly constructed and arranged with respect to a passageway leading to a piston pressure chamber to be manually movable between (1) a first position wherein the passageway is opened fully to communicate a pressure reservoir with the piston pressure chamber thereby permitting the air under pressure to communicate with the piston pressure chamber to provide maximum energy to a drive piston and (2) a second position wherein the passageway is at least partially closed restricting a flow of the air under pressure from the pressure reservoir to the piston pressure chamber thereby reducing energy to the piston while the air under pressure is maintained at a predetermined pressure value.
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