Press machine
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United States of America Patent
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Mar 24, 2009
Grant Date -
Jul 3, 2008
app pub date -
Dec 20, 2007
filing date -
Dec 27, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A press machine is configured with an adjustable slide stroke length. The press machine comprises a frame, a crankshaft borne rotatably on the frame, a slide disposed under the crankshaft, a first lever swingably supported on the frame, a second lever swingably connected to the first lever through a first pin, a displacing mechanism for displacing the first pin, and a linear approximation mechanism that exerts a horizontal force to the first pin so as to convert a rotation of each eccentric portion of the crankshaft into an elevating motion of the slide.
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