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:
Jun. 03, 2008
Filed:
Jul. 08, 2004
Applicant:
Robert Weger, Augsburg, DE;
Inventor:
Robert Weger, Augsburg, DE;
Assignee:
Mineabea Co., Ltd., Nagano-ken, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H 47/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a special control for current-controlled inductors which allows inductance to be varied at a considerably faster rate than is the case in the prior art. The control presented in the invention can be employed for coil arrangements which carry at least one control winding and at least two working windings on a ferro or ferromagnetic core material. The accelerated change in inductance is achieved by means of a demagnetizing inverse voltage impulse which is generated by a special part of the circuit.