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:
Sep. 15, 2020
Filed:
Jan. 20, 2016
Siemens Aktiengesellschaft, Munich, DE;
Anton Holzer, Weiz, AT;
Helmut Pregartner, Krottendorf, AT;
Guenter Pretterhofer, Gleisdorf, AT;
Alfons-Karl Schrammel, Waldbach, AT;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
An arrangement for reducing the radiation of noise from liquid-cooled transformers or chokes includes a tank having stiffeners arranged outside on the side walls of the tank, where a region situated between each stiffener is covered by a sandwich panel that is fastened to each stiffener, where each sandwich panel has a metallic wall that hermetically closes off a cavity that is filled with a composition composed of a polymer material and a filler material, where the composition has a specific weight of >2 grams per cubic centimeter.