Pneumatic fixing machine
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United States of America Patent
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-
Mar 3, 2009
Grant Date -
May 31, 2007
app pub date -
Dec 10, 2004
filing date -
Dec 10, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A pneumatic fixing machine has a piston (30) sliding within a cylinder (33), a first valve (5) movable between opening (L) and closing (D) positions, in correspondence of which the first valve connects an inlet portion (33a) of the cylinder (33) with either a feed of pressurized fluid or with an external outlet, respectively. A second valve (2) is operated by a trigger (7), the second valve being movable between an occlusion position (M) and a passage position (L) to either connect a first duct (9) and a base portion (5a) of the first valve (5) with the feed of pressurized fluid or with an external outlet. The machine (1) has a third valve (3) movable between a position of obstruction (N) and a crossing position (Q) to either cut off or to open a flow connection between the duct (9) and the first valve means (5), respectively, and a fourth valve (4) operated by the trigger (7), the fourth valve being movable between a block position (S) and a transit position (T), to either obstruct flow or allow free flow between the cylinder (33) and the third valve (3).
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