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. 01, 2025
Filed:
Feb. 12, 2020
Hitachi Energy Ltd, Zürich, CH;
JiaQuan Yan, Guangzhou, CN;
ShengQiang Li, Beijing, CN;
ZhanGang Lv, Beijing, CN;
WeiDong Zhang, Tianjin, CN;
HITACHI ENERGY LTD, Zürich, CH;
Abstract
A balance spring assembly for a disconnector comprises a push rod partially and coaxially arranged in a blade of the disconnector which is rotatable about a first shaft to change an operation status of the disconnector, a first end of the push rod fixed to a second shaft so that the push rod is rotatable about the second shaft; and a spring arranged in the blade and around the push rod, the spring held between a second end of the push rod and an end of the blade adjacent to the first shaft, wherein the second shaft is arranged parallel to the first shaft to enable the push rod to axially move in the blade with a rotation of the blade to thereby compress or decompress the spring. By arranging the balance spring assembly at least in part in the blade of the disconnector, only one set of the springs is needed.