Internal-combustion engines – Valve – Wear feature
Reexamination Certificate
2005-02-23
2008-08-19
Cronin, Stephen K. (Department: 3747)
Internal-combustion engines
Valve
Wear feature
C123S193600, C123S193500
Reexamination Certificate
active
07412955
ABSTRACT:
An engine component is composed of an aluminum alloy containing silicon, and includes a plurality of primary-crystal silicon grains located on a slide surface. The plurality of primary-crystal silicon grains have an average crystal grain size of no less than about 12 μm and no more than about 50 μm.
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Koike Toshikatsu
Kurita Hirotaka
Yamagata Hiroshi
Benton Jason
Cronin Stephen K.
Keating & Bennett LLP
Yamaha Hatsudoki Kabushiki Kaisha
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