Alloys or metallic compositions – Ferrous – 1.7 percent or more carbon containing
Reexamination Certificate
2005-07-12
2005-07-12
Yee, Deborah (Department: 1742)
Alloys or metallic compositions
Ferrous
1.7 percent or more carbon containing
C420S012000, C420S017000, C420S097000, C420S098000, C420S108000, C420S110000, C420S586100, C148S321000, C148S324000, C148S442000, C075S246000
Reexamination Certificate
active
06916444
ABSTRACT:
This invention related to a novel iron base alloy using residual austenite to improve wear resistance for valve seat insert material for internal combustion engines. The residual austenite is stable even after heat treatment and liquid nitrogen chilling. The alloy comprises of 2.0-4.0 wt % carbon, 1.0-3.0 wt % silicon, 0-4.0 wt % manganese, 3.0-9.0 wt % chromium, 5.0-15.0 wt % molybdenum, 3.0-15.0 wt % nickel, 0-6.0 wt % vanadium, 0-4.0 wt % niobium, 0-6.0 wt % cobalt, and the balance being iron with impurities.
REFERENCES:
patent: 4155754 (1979-05-01), Lynn
patent: 4778522 (1988-10-01), Maki et al.
patent: 4844024 (1989-07-01), Fujiki et al.
patent: 5316596 (1994-05-01), Kataoka
patent: 5578773 (1996-11-01), Wisell
patent: 6200688 (2001-03-01), Liang et al.
patent: 6248292 (2001-06-01), Ando et al.
patent: 0 430 241 (1991-06-01), None
patent: 0 559 899 (1993-09-01), None
patent: 0 665 068 (1995-08-01), None
patent: 2-30730 (1990-02-01), None
patent: 02030730 (1990-02-01), None
patent: 3-13542 (1991-01-01), None
patent: 03013542 (1991-01-01), None
patent: 10-68041 (1993-07-01), None
patent: 05179392 (1993-07-01), None
patent: 05179394 (1993-07-01), None
patent: 6-256889 (1994-09-01), None
patent: 06256889 (1994-09-01), None
patent: 08209299 (1996-08-01), None
patent: 8-209299 (1996-08-01), None
patent: 1068041 (1998-03-01), None
patent: 10068041 (1998-03-01), None
patent: 11061320 (1999-03-01), None
patent: 2000-28009 (2000-10-01), None
patent: 2000280009 (2000-10-01), None
patent: 2001040458 (2001-02-01), None
Alloy Technology Solutions, Inc.
Reising, Ethington, Barnes, Kisselle, PlC.
Yee Deborah
LandOfFree
Wear resistant alloy containing residual austenite for valve... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wear resistant alloy containing residual austenite for valve..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wear resistant alloy containing residual austenite for valve... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3367432