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. 07, 2022
Filed:
Nov. 08, 2019
Guangdong Welling Motor Manufacturing Co., Ltd., Guangdong, CN;
Midea Welling Motor Technology (Shanghai) Co., Ltd., Shanghai, CN;
Yiming Hu, Guangdong, CN;
Tiantian Yan, Guangdong, CN;
GUANGDONG WELLING MOTOR MANUFACTURING CO., LTD., Foshan, CN;
MIDEA WELLING MOTOR TECHNOLOGY (SHANGHAI) CO., LTD., Shanghai, CN;
Abstract
The present disclosure provides a bearing assembly, a rotor assembly and a draught fan. The bearing assembly has a shaft sleeve and a shaft extending through the shaft sleeve. An inner wall of the shaft sleeve is provided with two grooves in a circumferential direction. The shaft is provided with two channels corresponding to the two grooves respectively. The channels and the grooves form two raceways. Multiple rolling bodies are disposed between the shaft and the shaft sleeve and movable in the raceways. The shaft sleeve has an outer diameter of 13 mm, and a portion of the shaft extending within the shaft sleeve has a diameter of 5 mm.