Wrist pin, piston assembly and method for making same
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United States of America Patent
Stats
-
Dec 31, 1991
Grant Date -
N/A
app pub date -
Dec 7, 1990
filing date -
Dec 7, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A piston assembly is disclosed having a wrist pin for pivotably attaching a connecting rod to a piston for use in an internal combustion engine. The wrist pin is formed from an elongated circular cylindrical body having a pair of deformable sections formed adjacent each end and a relatively hard middle section therebetween. The wrist pin is sized for insertion along a longitudinal axis defined by a pair of coaxially aligned, spaced apart bores formed in diametrically opposed portions of the piston. The deformable end sections are adapted to be deformed sufficiently to engage the bores of the piston to limit the axial movement therebetween. The relatively hard middle section spans between the bores in the piston for pivotably engaging one end of the connection rod.
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