Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Reexamination Certificate
2008-01-04
2010-11-30
Chang, Ching (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
C123S090150, C464S160000
Reexamination Certificate
active
07841311
ABSTRACT:
The present invention provides a variable valve timing device for an internal combustion engine having a double camshaft. A gas exchange valve control shaft is provided which has first and second concentrically arranged cam shafts that are adjustable in a rotatable manner with respect to each other, by which a cam of the first cam shaft is adjusted in terms of its angle towards a cam of the second cam shaft. A cam phasing device is provided which operates by rotatable vanes provoking a swivelling relative movement between a driven member and an output member. The cam phasing device comprises at least two pivotable vane adjusters. Each pivotable vane adjuster is assigned to one of the two cam shafts. The pivotable vane adjusters are arranged axially one after the other in a direction of a valve control shaft. Each pivotable vane adjuster may be designed as a rotor-type vane adjuster.
REFERENCES:
patent: 2911956 (1959-11-01), Smith, Jr.
patent: 4332222 (1982-06-01), Papez
patent: 5233948 (1993-08-01), Boggs et al.
patent: 5235939 (1993-08-01), Levin et al.
patent: 6076492 (2000-06-01), Takahashi
patent: 6253719 (2001-07-01), Methley
patent: 6546842 (2003-04-01), Raikamo
patent: 6725817 (2004-04-01), Methley et al.
patent: 6814036 (2004-11-01), Palesch et al.
patent: 6945205 (2005-09-01), Heintzen et al.
patent: 7270096 (2007-09-01), Lancefield et al.
patent: 2003/0177991 (2003-09-01), Palesch et al.
patent: 2007/0034182 (2007-02-01), Dengler
patent: 2007/0039411 (2007-02-01), Lechner et al.
patent: 2007/0240657 (2007-10-01), Schneider
patent: 36 24 827 (1988-02-01), None
patent: 43 32 868 (1995-03-01), None
patent: 199 14 909 (2000-10-01), None
patent: 10 2004 024 222 (2005-03-01), None
patent: 10 2005 014 680 (2006-08-01), None
patent: 0 397 540 (1990-11-01), None
patent: 1 347 154 (2003-09-01), None
patent: 11-173120 (1999-06-01), None
patent: 92/12333 (1992-07-01), None
patent: 01/12996 (2001-02-01), None
patent: 2005/040562 (2005-05-01), None
Barton Glenn A.
Cole Joe S.
Hutcheson Jack D.
Knecht Andreas
Nance Stephen L.
Chang Ching
Hilite International Inc.
Lipsitz & McAllister LLC
LandOfFree
Variable valve timing device 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, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable valve timing device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4244528