Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Reexamination Certificate
2006-12-12
2009-11-24
Eshete, Zelalem (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
C123S090150
Reexamination Certificate
active
07621242
ABSTRACT:
The present invention provides a variable valve operating mechanism which includes two valve operating members for opening and closing two valves individually, a drive cam provided on a single camshaft, two swing arms for transmitting a power of the drive cam to the valve operating members individually by swinging about a different axis to the camshaft, and a variable device for modifying a displacement of the swing arm per rotation of the drive cam in accordance with an operating condition of an internal combustion engine. The variable device includes a single control shaft, an actuator for driving the control shaft, and a cam device that operates in conjunction with the control shaft to dissimilate the displacement of the two swing arms.
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European Search Report dated Apr. 4, 2007.
Hirano Tomiyasu
Kitagawa Katsutoshi
Niwa Tetsuya
Sugiura Akira
Yamamoto Tamotsu
Eshete Zelalem
McGinn IP Law Group PLLC
OTICS Corporation
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