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:
May. 24, 1988
Filed:
Apr. 19, 1985
Applicant:
Inventor:
Henry J Zylstra, Alburnette, IA (US);
Assignee:
Square D Company, Palatine, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
H01F / ; H01F / ;
U.S. Cl.
CPC ...
336171 ; 336175 ; 336181 ; 336184 ; 361 87 ; 361 93 ;
Abstract
A high saturation three coil current transformer for use with electrical apparatus having a U-shaped conductor portion. The current transformer has a ferromagnetic core surrounding one leg of the U-shaped conductor. The core is formed from two U-shaped core portions. A first coil and a second coil are wound on bobbins, with one bobbin being placed around each juncture between the core portions. A third coil is wound about the middle section of one of the U-shaped core portions prior to the core portions being joined. The current transformer is positioned so that the U-shaped conductor surrounds the third coil.