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. 15, 2001
Filed:
Jul. 18, 1997
Gunnar Zinders, Smedjebacken, SE;
Tommy Holmgren, Ludvika, SE;
Björn Sandin, Ludvika, SE;
Stefan Valdemarsson, Västerås, SE;
Dan Elofsson, Ludvika, SE;
Olle Ekwall, Ludvika, SE;
Asea Brown Boveri AB, Vasteras, SE;
Abstract
A tubular core (,) for a controllable inductor with a main winding (,) surrounding the core and a control winding (,) passing substantially axially through the core. The core (,) is capable of receiving a magnetic flux from the main winding (,) running substantially axially therethrough and having a plurality of core rings (,) stacked co-axially on top of each other and connected to a rigid unit. The core rings (,) are connected to each other forming a walled construction. The core (,) also has an inner envelope (,) with an outer cross-section that is substantially equal to the inner cross-section of the core ring walled construction. The walled construction has joints (,) between the core rings (,) in an axial direction which are overlapped by a part of the envelope (,).