Spherical coupling structure between a piston and a connecting rod
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United States of America Patent
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-
Oct 31, 2006
Grant Date -
May 12, 2005
app pub date -
Nov 4, 2004
filing date -
Nov 7, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A coupling structure for coupling a piston and a connecting rod has a protrusion formed on the rear surface of the crown of the piston and having a semi-spherical concavity and a threaded portion concentric to the concavity, a substantially spherical small end formed at one end of the connecting rod, a holder holding the spherical small end of the connecting rod slidably in the semi-spherical concavity of the protrusion and a fixing ring having a threaded portion engaging with the threaded portion of the protrusion for securing the holder to the protrusion of the piston.
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