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. 15, 2021
Filed:
May. 10, 2018
Abb Power Grids Switzerland Ag, Baden, CH;
Henrik Hillborg, Västrås, SE;
Olof Hjortstam, Västrås, SE;
Henrik Lofas, Skultuna, SE;
Jonas Birgerson, Borlänge, SE;
ABB Power Grids Switzerland AG, Baden, CH;
Abstract
The present disclosure relates to a filled silicone rubber materialincluding at least 20 wt % of alumina tri-hydrate as a fillerdispersed in SiRto below the percolation threshold. The ATH is a mixture of a first ATH powder and a second ATH powder. The particle size distribution of the first and second ATH powders are such that the dvalue of the second ATH powder is less than the dvalue of the first ATH powder. The disclosure also relates to an insulatormade from the filled SiR material, and to a use of the insulator in a high-voltage direct current application.