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:
Jan. 04, 2011
Filed:
Oct. 23, 2007
Applicants:
Wulf Guenther, Maintal, DE;
Detlef Otte, Gruendau, DE;
Joerg Petzold, Kahl, DE;
Inventors:
Assignee:
Vacuumschmelze GmbH & Co. KG, Hanau, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 7/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A current transformer core has a ratio of the core outside diameter Dto the core inside diameter Dof <1.5, a saturation magnetostriction λof =|4| ppm, a circular hysteresis loop with 0.50=Br/Bs=0.85 and an H=20 mA/cm. The current transformer core is made of a soft magnetic iron alloy in which at least 50% of the alloy structure is occupied by fine-crystalline particles with an average particle size of 100 nm or less, and the iron-based alloy comprises, in essence, one combination.