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. 12, 1978
Filed:
May. 03, 1977
Applicant:
Inventor:
Steven Welk, Lansdale, PA (US);
Assignee:
Electric Power Research Institute, Inc., Palo Alto, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H61C / ;
U.S. Cl.
CPC ...
338 21 ; 338270 ; 338298 ; 338299 ; 338304 ;
Abstract
A fault current limiting resistor for high energy dissipation includes a frustro-conical support structure where the resistor wire is wound on the support structure in the form of a three dimensional spiral. This provides optimum voltage clearances even when the wire may sag due to thermal expansion.