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:
Feb. 21, 2012
Filed:
Nov. 04, 2006
Wolfgang Albrecht, Wenzenbach, DE;
Thomas M. Huber, Maxhuette-Haidhof, DE;
Wolfgang Albrecht, Wenzenbach, DE;
Thomas M. Huber, Maxhuette-Haidhof, DE;
Maschinenfabrik Reinhausen GmbH, Regensburg, DE;
Abstract
The invention relates to an on-load tap changer having an energy storage mechanism for changing over, without any interruptions, between different winding taps of a tap-changing transformer on load. According to the invention, the energy storage mechanism has one or more compression springs, which are tensioned at the beginning of a changeover operation. In comparison with the tensile springs used to date with such energy storage mechanisms, the compression springs have markedly greater long-term strength.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile