The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 23, 1997
Filed:
Aug. 16, 1994
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 (US);
Le Carbone Lorraine, Courbevoie, FR;
Abstract
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).