Valve timing adjustment device

Details Valve timing adjustment device Valve timing adjustment device

2005-07-26

2005-07-26

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090150, C074S56800M, C092S121000

Reexamination Certificate

active

06920855

ABSTRACT:
A valve timing adjustment device for promptly switching a rotational phase includes a guide rotary body having a guide passage containing a movable body. The guide passage includes a variable radial dimension relative to a rotational centerline. The guide rotary body rotates relative to a driving rotary body and guides the movable body in the guide passage. A phase change mechanism changes the rotational phase of a driven shaft relative to a drive shaft according to the position of the movable body in the guide passage. The guide passage has a gradually decreasing region and a gradually increasing region. The gradually decreasing region slants toward an axis of the guide rotary body. The gradually increasing region slants relative toward the axis of the guide rotary body. The gradually decreasing region and the gradually increasing region are connected.

REFERENCES:
patent: 5161493 (1992-11-01), Ma
patent: 6170447 (2001-01-01), Kohrs et al.
patent: 2003/0226532 (2003-12-01), Takenaka et al.
patent: 2004/0084000 (2004-05-01), Takenaka et al.
patent: 2005/0022765 (2005-02-01), Takenaka et al.
patent: 2001-41013 (2001-02-01), None

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