Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Reexamination Certificate
2005-01-28
2009-02-24
Denion, Thomas E (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
C123S090150, C123S090200, C123S090390, C123S090430
Reexamination Certificate
active
07493879
ABSTRACT:
An engine valve operating system is provided in which a rocker arm that swings by following a valve operating cam abuts against an engine valve via a hydraulic tappet, a receiving member (41) receiving the hydraulic tappet (12) being slidably fitted into the rocker arm (13), the hydraulic tappet (12) being fitted into the rocker arm (13), a restricting part (29) being provided so as to face the receiving member (41) from the side opposite to the hydraulic tappet (12), and an adjustment screw (44) for adjusting a clearance between the restricting part (29) and the receiving member (41) when the engine valve is in a valve-closed state being screwed into an engine main body (5) so that its position can be adjusted back-and-forth so as to abut against the receiving member (41) when the engine valve is closed. This enables the amount of lift of the engine valve to easily be adjusted with good precision while eliminating the need for complicated machining or production control when opening or closing the engine valve via the hydraulic tappet by means of the rocker arm.
REFERENCES:
patent: 4399787 (1983-08-01), Cavanagh
patent: 4475500 (1984-10-01), Bostelman
patent: 4815424 (1989-03-01), Buuck et al.
patent: 4924821 (1990-05-01), Teerman
patent: 5857438 (1999-01-01), Barnard
patent: 6354254 (2002-03-01), Usko
patent: 6422186 (2002-07-01), Vanderpoel
patent: 6925976 (2005-08-01), Israel et al.
patent: 2 138 093 (1984-10-01), None
patent: 59-170413 (1984-09-01), None
patent: 6-264708 (1994-09-01), None
patent: 2001-98912 (2001-04-01), None
patent: 2004-36560 (2004-02-01), None
patent: 2004-353599 (2004-12-01), None
patent: WO 01/18373 (2001-03-01), None
Supplementary European Search Report mailed Nov. 7, 2008 in corresponding application; 2 pages.
Fujii Noriaki
Fujimoto Tomoya
Yoshida Keiko
Denion Thomas E
Honda Motor Co. Ltd.
Kratz Quintos & Hanson, LLP
Riddle Kyle M
LandOfFree
Engine valve operating system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Engine valve operating system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Engine valve operating system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4106572