Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Akihiro Yoshida0
Date of Patent
March 24, 2009
0Patent Application Number
119618910
Date Filed
December 20, 2007
0Patent Primary Examiner
Patent 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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