Valve timing adjusting device

Details Valve timing adjusting device Valve timing adjusting device

2005-12-06

2005-12-06

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090180, C123S090150, C123S090160, C464S001000, C464S002000, C464S160000, C464S161000, C092S00500L, C092S023000, C092S024000, C092S027000, C092S121000, C092S122000, C148S545000, C148S547000, C148S548000

Reexamination Certificate

active

06971351

ABSTRACT:
A region including an engaging hole is given surface treatment such as partial quench hardening by induction hardening for improving surface hardness of the region. The partial quench hardening by induction hardening provides the region with satisfactory mechanical strength or surface hardness enough for resisting deformation of the engaging hole and wear-out of an edge of opening of the engaging hole caused by putting in and out of the lock pin.

REFERENCES:
patent: 5724929 (1998-03-01), Mikame et al.
patent: 6352008 (2002-03-01), Matsuoka et al.
patent: 6394052 (2002-05-01), Miyasaka et al.
patent: 6497208 (2002-12-01), Miyasaka
patent: 6523511 (2003-02-01), Hase
patent: 2000-345815 (2000-12-01), None
patent: 2002-054407 (2002-02-01), None

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