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:
Jul. 10, 1990
Filed:
Dec. 30, 1988
Applicant:
Inventors:
Assignee:
Societe Anonyme dite : Alsthom, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01C / ;
U.S. Cl.
CPC ...
338 21 ; 361117 ; 338 20 ;
Abstract
A braking resistance having at least one basic element (400) including a ceramic envelope (1) receiving at least one stack of conducting solid disks (11) made of a carbon-based ceramic and having a resistivity lying in the range 100.OMEGA..cm to 1000.OMEGA..cm. A tube (20) maintains the stack. A spring (14) exerts pressure on the stack of disks. Electrical contact is provided between each end of each stack and respective conducting plates located at the ends of the envelope and the envelope is filled with nitrogen at a pressure of 1 to 2 bars.