Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Reexamination Certificate
2007-10-09
2007-10-09
Eshete, Zelalem (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
C123S090150, C123S090310
Reexamination Certificate
active
11482704
ABSTRACT:
A valve timing adjusting device includes: a first rotary body which rotates in synchronization with one of a crankshaft and a camshaft and into which lubricating fluid is supplied; a second rotary body which rotates in synchronization with the other; a torque producing unit for producing control torque; and a phase change unit including a planetary gear mechanism in which a planetary gear is engaged with a sun gear in such a way as to be able to perform a planetary motion. The phase change unit changes a relative rotational phase between the first rotary body and the second rotary body by utilizing the control torque transmitted from the torque producing unit to the planetary gear mechanism and has a space at an interface where the first rotary body is brought into sliding contact with the planetary gear.
REFERENCES:
patent: 6848401 (2005-02-01), Takenaka et al.
patent: 6920855 (2005-07-01), Takenaka et al.
patent: 2004/0084000 (2004-05-01), Takenaka et al.
Hori Akira
Mizutani Shuji
Takenaka Akihiko
DENSO CORPORATION
Eshete Zelalem
Nixon & Vanderhye PC
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