Internal-combustion engines – Poppet valve operating mechanism – Camshaft drive means
Reexamination Certificate
2006-10-03
2006-10-03
Denion, Thomas (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
Camshaft drive means
C123S090270
Reexamination Certificate
active
07114474
ABSTRACT:
A chain tensioner is in sliding contact with each cam chains in a pair of banks and each of cylinder heads of the pair of banks includes a tensioner lifter that abuts on a corresponding one of the two chain tensioners from a side opposite to the cam chains. Of the two tensioner lifters, a first tensioner lifter is disposed on a cylinder head of a first bank at a portion corresponding to an outside of two banks. A second tensioner lifter is disposed on a cylinder head of a second bank at a portion corresponding to an inside of the two banks. A distance between an upper end connection surface of the cylinder head of the first bank and the tensioner lifter is set to be smaller than a distance between an upper end connection surface of the cylinder head of the second bank and the other tensioner lifter.
REFERENCES:
patent: 6439185 (2002-08-01), Tosaka et al.
patent: 2000-199434 (2000-07-01), None
Kisaichi Toru
Oshita Toru
Birch & Stewart Kolasch & Birch, LLP
Chang Ching
Denion Thomas
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