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. 20, 2015
Filed:
Jun. 03, 2013
Applicant:
Wuhan Taipu Transformer Changer Co., Ltd., Wuhan, CN;
Inventors:
Assignee:
WUHAN TAIPU TRANSFORMER CHANGER CO., LTD., Wuhan, CN;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H 19/00 (2006.01); H01H 21/00 (2006.01); H01H 9/00 (2006.01); H01H 1/16 (2006.01); H01H 1/20 (2006.01); H01H 3/50 (2006.01);
U.S. Cl.
CPC ...
H01H 9/0016 (2013.01); H01H 9/0005 (2013.01); H01H 1/16 (2013.01); H01H 1/20 (2013.01); H01H 3/50 (2013.01);
Abstract
In one aspect of the invention, an off-circuit tap changer includes a switch base and a rotation shaft penetrating the switch base. An upper end of the rotation shaft is connected to an operation positioning device, a lower end of the rotation shaft is disposed with moving contacts, and fixed contacts corresponding to the moving contacts are circumferentially disposed at a spacing on the switch base; the moving contacts are radial elastic rolling moving contacts, and the radial elastic rolling moving contacts span between two adjacent fixed contacts and closely contact the fixed contacts.