Internal-combustion engines – Valve – Wear feature
Reexamination Certificate
2007-12-25
2011-11-01
Cuff, Michael (Department: 3783)
Internal-combustion engines
Valve
Wear feature
C123S193600
Reexamination Certificate
active
08047174
ABSTRACT:
An internal combustion engine component is composed of an aluminum alloy containing silicon, and includes a plurality of silicon crystal grains located on a slide surface. The slide surface has a ten point-average roughness RzJISof about 0.54 μm or more, and a load length ratio Rmr(30) at a cut level of about 30% of the slide surface is about 20% or more.
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Official Communication issued in International Patent Application No. PCT/JP2007/075362, mailed on Apr. 18, 2008.
Jorstad, “Reynolds 390 Engine Technology,” SAE Technical Paper Series, Mar. 4, 1983, pp. 1-5.
Iwasaki Shinya
Kurita Hirotaka
Yamagata Hiroshi
Cuff Michael
Keating & Bennett LLP
Kim James
Yamaha Hatsudoki Kabushiki Kaisha
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