Piston
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United States of America Patent
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-
Mar 8, 2005
Grant Date -
Dec 4, 2003
app pub date -
Mar 25, 2003
filing date -
Mar 25, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A light weight piston for an internal combustion engine is disclosed that minimizes the stresses found in a transition area between the piston head and the associated piston pin bosses while maintaining a flexible soft connection between the piston skirts and the piston head. The piston includes a pair of piston skirts having tapered edges. Flared connecting walls are provided such that the distance between the connecting walls is minimized adjacent a pair of piston pin bosses and the distance between the connecting walls is maximized adjacent a portion of the tapered edges. The connecting wall flares in a generally outward direction such that at least a portion of the inner surfaces of the connecting wall has a generally convex curvature.
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