Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Metal and nonmetal in final product
Reexamination Certificate
2007-12-18
2007-12-18
King, Roy (Department: 1742)
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Metal and nonmetal in final product
C419S026000, C419S029000, C419S038000, C419S039000
Reexamination Certificate
active
11397702
ABSTRACT:
A sintered sprocket for a silent chain is obtained from a material with few addition elements by a simple densifying method. The sintered sprocket is made of an ferrous material having an ovarall composition containing Cu at 1 to 2%, C at 0.5 to 0.8%, Mn as an inevitable impurity at 0.10% or less, and balance of Fe and other inevitable impurities by mass and has a density of 7.1 Mg/m3or higher, 65 HRA or higher as a hardness in the gear teeth, and a martensite, sorbite, bainite, or their mixed structure as a cross-sectional microscopic structure in at least the gear teeth and the peripheral area of the gear teeth.
REFERENCES:
patent: 5308702 (1994-05-01), Furukimi et al.
patent: 5599377 (1997-02-01), Uenosono et al.
patent: 5682588 (1997-10-01), Tsutsui et al.
patent: 5711187 (1998-01-01), Cole et al.
patent: 6332904 (2001-12-01), Fujiki et al.
patent: 6338747 (2002-01-01), Kosco
patent: 6488736 (2002-12-01), Ueda et al.
patent: 2003/0033901 (2003-02-01), Sugaya et al.
patent: 2003/0047032 (2003-03-01), Newman et al.
patent: 2003/0228949 (2003-12-01), Okabe et al.
patent: 1 273 769 (2003-01-01), None
patent: A-2001-295915 (2001-10-01), None
patent: A-2002-129295 (2002-05-01), None
patent: WO 93/24260 (1993-12-01), None
Fujiki Akira
Ishii Kei
Mabuchi Yutaka
Maekawa Yukihiro
Murata Takashi
Hitachi Powdered Metals Co. Ltd.
King Roy
Mai Ngoclan T.
Nissan Motor Co,. Ltd.
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