Internal-combustion engines – Poppet valve operating mechanism – Camshaft drive means
Reexamination Certificate
2006-04-26
2008-10-14
Chang, Ching (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
Camshaft drive means
C123S090150, C123S090270
Reexamination Certificate
active
07434555
ABSTRACT:
A number of embodiments of double overhead cam shaft V type engines wherein the drive arrangement for the camshafts permits not only a compact design but also one in which the timing loadings are decreased to improve engine life, performance and reduced servicing.
REFERENCES:
patent: 4974560 (1990-12-01), King
patent: 5033421 (1991-07-01), Shimada et al.
patent: 5564380 (1996-10-01), Kobayashi et al.
patent: 6367435 (2002-04-01), Okui et al.
patent: 624717 (1994-11-01), None
patent: 2003-286854 (2003-10-01), None
Patent Abst Japan, Oct. 10, 2003, Honda Motor.
Beutler Ernest A.
Chang Ching
Yamaha Motor Company Ltd
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