Arwed Ralf Uecker

7449144, Nov 11, 2008

Jan 17, 2003

10/346824

Wilhelm Latz - Frankfurt am Main, DE
Jürgen Spangenberg - Bad Vilbel, DE
Arwed Uecker - Farmville VA, US

Deutsche Carbone AG - Frankfurt am Main

B22F 3/12

419 11, 419 32, 419 36, 419 38, 419 53, 419 58

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.

7638918, Dec 29, 2009

Jun 1, 2005

11/140986

Arwed Uecker - Farmville VA, US

Carbone Lorraine Applications Electriques - Amiens

H01R 39/36

310249, 310251, 310252, 310253

In a process for attaching a shunt wire to a carbon brush body in which a resin-containing cement is tamped into a cavity in the brush body, an improved cement is used, formed from a mixture of polyphenylene sulfide powder having a grain size of 5 to 50 μm and copper-based powder. The brush produced thereby is improved in resistance to alcohol-containing fuels.

20090029184, Jan 29, 2009

Sep 18, 2008

12/284081

Wilhelm Latz - Frankfurt/Main, DE
Jurgen Spangenberg - Bad Vilbel, DE
Arwed Uecker - Farmville VA, US

B22F 7/08

428565, 419 8

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.

57010463, Dec 23, 1997

Aug 16, 1994

8/291562

Eric Kammerer - Amiens, FR
Lothar Biering - Frankfurt am Main, DE
Erhard Grohs - Oberursel, DE
Klaus Groht - Niddatal, DE
Conrad Reynvaan - Bad Homburg, DE
Horst Siegmund - Arnoldshain, DE
Jorgen Spangenberg - Bad Vilbel, DE
Arwed Uecker - Farmville VA

Le Carbone Lorraine - Courbevoie

H01R 3924
H02K 1300

310251

The process comprising the charging into a mould (3) of at least one electrically conductive powder (4), the compression by means of a piston (5) of the contents of the mould to form a crude brush (7), the heat treatment of said crude brush (7) as well as the fixing of the ends of the electrical conductors (2), characterised in that the charging involves at least the simultaneous introduction of at least two conductive powders (4B, 4A and/or 4C. . . ) for obtaining a brush formed by integral blocks (1B, 1A and/or 1C. . . ), the junction (1AB and/or 1BC. . . ) between said blocks being orientated at least in part in the compression direction (13).