Connecting rod for internal combustion engine
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United States of America Patent
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Jan 9, 2018
Issued Date -
N/A
app pub date -
Aug 31, 2015
filing date -
Sep 26, 2014
priority date (Note) -
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Abstract
A base-material hole is formed in a connecting-rod base material. A coating layer is deposited on an inner peripheral surface of the base-material hole. The base-material hole 15 has a cylinder inner-surface portion of a constant inner diameter, formed in a central region in an axial direction, and a tapered inner-surface portion that is continuous with an axially outer side of the cylinder inner-surface portion and is radially enlarged in an axially outward direction. The coating layer has a first coating portion and a second coating portion deposited on the tapered inner-surface portion to adjoin the first coating portion and gradually increasing in material thickness in the axially outward direction.
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