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. 27, 2017
Filed:
Mar. 20, 2014
Johnson Electric S.a., Murten, CH;
Shenzhen Joint Welding Material Co., Ltd., Shenzhen, CN;
Zhiping Zou, Shenzhen, CN;
Jianjun Guo, Shenzhen, CN;
Chihang To, Hong Kong, CN;
Zonghui Zheng, Shenzhen, CN;
JOHNSON ELECTRIC S.A., Murten, CH;
SHENZHEN JOINT WELDING MATERIAL CO. LTD., Shenzhen, CN;
Abstract
A commutator () comprising a plurality of commutator bars () formed from a graphite structure () and a metal sheet () having soldered to the graphite structure () includes a brazing process followed by a soldering process. The brazing process includes applying a brazing material the graphite structure () and brazing at an elevated temperature to form a brazing layer (). The soldering process includes applying a solder material to the brazing layer (), placing the metal sheet () on the solder material, and soldering to form a solder layer () affixing the metal sheet () to the graphite structure (). A plurality of grooves () are cut in the graphite structure () and the metal sheet () to form the commutator bars () arranged in an intermittent ring or circle.