Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Reexamination Certificate
2011-06-28
2011-06-28
Cuff, Michael (Department: 3783)
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
C123S184510, C180S068100, C180S068200, C180S068300, C074S469000, C074S47100R, C074S479010, C251S279000, C251S213000
Reexamination Certificate
active
07966985
ABSTRACT:
A valve operating system that includes a drive shaft, a drive lever that is fixedly provided thereon and can pivot in a direction of movement of a valve body, a follower arm that is fixedly provided on the valve body, a link, a first connecting shaft that connects one end of the link and the drive lever, and a second connecting shaft that connects the other end of the link and the follower arm; in response to a movement of the valve body from a first position to a second position by pivoting of the drive lever, a center of the first connecting shaft approaches from one side a straight line connecting two centers of the drive shaft and the second connecting shaft, and after the valve body reaches the second position, further pivoting of the drive lever is carried out through a predetermined angle so that the center of the first connecting shaft moves to the other side of a dead point on the straight line. Thereby a valve body can be held at one position with hardly any dependence on the output of an actuator, thus greatly reducing the load on the actuator.
REFERENCES:
patent: 4053542 (1977-10-01), Niebrzydoski
patent: 4384559 (1983-05-01), Tchang et al.
patent: 4890586 (1990-01-01), Fujii et al.
patent: 5495834 (1996-03-01), Rutschmann et al.
patent: 6422201 (2002-07-01), Yamada et al.
patent: 6481415 (2002-11-01), Cook
patent: 7389758 (2008-06-01), Yokoi
patent: 7533645 (2009-05-01), Fujiwara et al.
patent: 7730865 (2010-06-01), Yokoi
patent: 7806212 (2010-10-01), Sudoh et al.
patent: 7-224670 (1995-08-01), None
Fukuda Takashi
Hirata Makoto
Kawamata Fumio
Ota Shigehiko
Arent & Fox LLP
Cuff Michael
Keihin Corporation
Nguyen Hung Q
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