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:
May. 14, 2019
Filed:
May. 29, 2015
Johnson Electric International Ag, Murten, CH;
Mao Xiong Jiang, Shenzhen, CN;
Jian Zhao, Shenzhen, CN;
Guo Wei Sun, Shenzhen, CN;
Yong Li, Shenzhen, CN;
Yong Wang, Shenzhen, CN;
Hong Jiang Zhao, Shenzhen, CN;
Yue Li, Hong Kong, CN;
JOHNSON ELECTRIC INTERNATIONAL AG, Murten, CH;
Abstract
An electric motor has a wound stator and an outer rotor. A core of the stator has outer and inner annular portions. Tooth portions extend radially outwardly from the outer annular portion. Connecting arms interconnect the outer and inner annular portions. The width of the connecting arms is less than the width of the tooth portions. The ratio of tooth height Lto distance between the roots of adjacent teeth Lis in the range of 1.0 and 1.3. The ratio of tooth width Tto Lis in the range of 0.8 and 1.0. The ratio of tooth length Tto Lis in the range of 0.5 and 0.6. The ratio of Tto outer diameter of the stator core D is in the range of 0.07 and 0.1.