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:
Oct. 28, 2025
Filed:
Aug. 09, 2021
Maschinenfabrik Reinhausen Gmbh, Regensburg, DE;
Christian Hammer, Regensburg, DE;
MASCHINENFABRIK REINHAUSEN GMBH, Regensburg, DE;
Abstract
An on-load tap-changer uninterruptedly switches between winding taps of a tap-changing transformer. The on-load tap-changer has: a diverter switch that switches over from a first to a second fixed contact; and a selector that powerlessly preselects the fixed contacts and has a first and second selector arm that are actuated independently and contact each of the fixed contacts. The diverter switch has: a main path with a mechanical switching element that connects the first selector arm to a load take-off lead; a first auxiliary path with a first semiconductor switching element that is parallel to the main path and connects the first selector arm to the load take-off lead, and a second auxiliary path with a second semiconductor switching element that connect the second selector arm to the load take-off lead.