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. 17, 2001
Filed:
Apr. 05, 1999
Applicant:
Inventors:
Roberto Giampieretti, Milan, IT;
Alessandro Parolini, Bellusco, IT;
Assignee:
ABB Research Ltd., Zurich, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01B 1/714 ;
U.S. Cl.
CPC ...
H01B 1/714 ;
Abstract
A hollow insulator for electric transmission and/or distribution lines including an insulating hollow tube made of composite material which is coupled, at least at an end portion thereof, to a metal flange which has a portion adapted to be inserted into the hollow tube. The coupling between the metal flange and the insulating tube is provided by means of a plurality of connection elements adapted to transfer to the flange flexural stresses due to flexural moments applied to the tube. The connection elements work substantially under shearing stress.