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:
Apr. 24, 2012
Filed:
Mar. 26, 2008
Applicants:
Erik Jonsson, Trondheim, NO;
Lars Palmqvist, Alingsås, SE;
Inventors:
Erik Jonsson, Trondheim, NO;
Lars Palmqvist, Alingsås, SE;
Assignee:
ABB Research Ltd., Zürich, CH;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01C 7/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electric insulation arrangement including a field grading material including a matrix including a dielectric material. A plurality of micro varistor particles is distributed in the matrix. A plurality of bridge particles include an electrically conducting material and form electrically conducting bridges between individual micro varistor particles. The bridge particles form a percolating network together with the micro particles but do not form a percolating network by interconnection between themselves.