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:
Apr. 03, 1990
Filed:
Apr. 15, 1988
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B61C / ;
U.S. Cl.
CPC ...
105 96 ; 105 60 ; 1741 / ; 464900 ;
Abstract
A running gear for an electric rolling stock has coupling devices for coupling the output shafts of traction motors to the input shafts of reduction devices which are provided with electrically resistive elements so as to prevent return current from flowing therethrough. Therefore, the coupling devices possess a higher level of resistance than the grounding resistance of the grounding devices, thereby enabling any return current to be prevented from flowing through the coupling devices. Thus, the running device can be kept free from electrolytic corrosion.