Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Reexamination Certificate
2007-12-04
2007-12-04
Chang, Ching (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
C123S090390, C123S090440
Reexamination Certificate
active
11602326
ABSTRACT:
A variable valve timing device includes a cam shaft, a rocker arm rotatably supporting the first roller and enabling a valve to be opened by a swing movement thereof when a first roller is pressed, a swing cam with a second cam surface, and an actuator for controlling the support shaft to move along a circular arc with a center at a center of the first roller in a valve-open state. The swing cam is swingable at a center of the support shaft, when a second roller is pressed by the cam shaft, so that the second cam surface presses the first roller. A contact position, between the first cam surface and the second roller, moves in a direction opposite to a rotational direction of the cam shaft when the support shaft is moved in a direction where a maximum lift amount of the valve becomes smaller.
REFERENCES:
patent: 7240649 (2007-07-01), Hara et al.
patent: 11-107725 (1999-04-01), None
Chang Ching
Wenderoth , Lind & Ponack, L.L.P.
LandOfFree
Variable valve timing device adapted for internal combustion... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Variable valve timing device adapted for internal combustion..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable valve timing device adapted for internal combustion... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3857839