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:
Jun. 22, 1993
Filed:
Jun. 05, 1992
Applicant:
Inventor:
Robert Cummins, Pittsburgh, PA (US);
Assignee:
Mosebach Manufacturing Company, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01C / ;
U.S. Cl.
CPC ...
338281 ; 338280 ; 338281 ;
Abstract
A fan-folded resistor ribbon is provided for use in resistor grids that are used for dynamic braking of diesel electric locomotives. The resistor ribbon is formed, from a continuous strip of resistance material, into flat portions that are connected by semi-tubular end loops. The outer surface of each semi-tubular end loop is an arcuate cylindrical surface that extends an angular distance of more than 180.degree. between the intersection lines where the flat portions join each of the end loops. The flat portions of the ribbon are embossed with one concave embossment and one convex embossment to further stiffen the ribbon material.