Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Metal and nonmetal in final product
Reexamination Certificate
2003-01-17
2008-11-11
King, Roy (Department: 1793)
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Metal and nonmetal in final product
C419S032000, C419S036000, C419S038000, C419S053000, C419S058000
Reexamination Certificate
active
07449144
ABSTRACT:
A process for manufacturing a sliding contact piece for medium to high current densities including a step of warm premixing of graphite and plastic binder, a step of cold mixing of the resulting premixture with copper, a step of pressing of the resulting main mixture into the sliding contact piece, and finally a step of sintering of it; and so as to improve the operating characteristics of the sliding contact piece, which is free of any environmentally harmful additives, a metal such as zinc, tin, bismuth or an alloy of such metals is added during the premixing of the graphite and plastic binder.
REFERENCES:
patent: 1067003 (1913-07-01), Deats et al.
patent: 2252277 (1941-08-01), Tate et al.
patent: 2411060 (1946-11-01), Savage
patent: 4000981 (1977-01-01), Sugafuji et al.
patent: 4131460 (1978-12-01), Orford
patent: 5227689 (1993-07-01), Shibuya
patent: 5270504 (1993-12-01), Grohs et al.
patent: 6132487 (2000-10-01), Mori
patent: 6222298 (2001-04-01), Saito et al.
patent: 6679933 (2004-01-01), He et al.
patent: 82327 (1919-09-01), None
patent: 289101 (1915-12-01), None
patent: 845 977 (1952-08-01), None
patent: 12 73 054 (1968-07-01), None
patent: 40 24 021 (1992-01-01), None
patent: 40 25 367 (1994-01-01), None
patent: 154287 (2004-08-01), None
patent: 182445 (2005-10-01), None
patent: 182445 (2007-02-01), None
patent: 55-14513 (1980-04-01), None
Latz Wilhelm
Spangenberg Jürgen
Uecker Arwed
Androlia William L.
Deutsche Carbone AG
King Roy
Koda H. Henry
Mai Ngoclan T
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