Wrist pin

Details Wrist pin Wrist pin

2006-04-11

2006-04-11

Lopez, F. Daniel (Department: 3745)

Expansible chamber devices

Piston

With separable means for pivotally mounting connecting rod...

Reexamination Certificate

active

07024981

ABSTRACT:
A wrist pin for a heavy-duty piston assembly has a body with an axis of rotation and a generally cylindrical outer surface. The outer surface is adapted for pivotal connection to both a pair of laterally spaced pin bores and a small end of a connecting rod generally between the pin bores. The outer surface has a surface roughness equal to or less than 0.10 μm. The outer surface has a Kurtosis value that is inversely proportional with the surface roughness such that a product of the Kurtosis value and the surface roughness is between about 0.30 μm to 0.60 μm. The outer surface has a skewness of about −1.0 to 0.0 and a lay angle relative to the axis of about 85 to 95 degrees.

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Metals Handbook Copyrighted 1998, pp. 910-913, Especially p. 912.
CRC Handbook of Mechanical Engineering Copyright 1998, pp. 11-78 to 11-80.

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