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:
Aug. 19, 2025
Filed:
May. 09, 2024
Skf (China) CO Ltd, Shanghai, CN;
Jing Zhou, Shanghai, CN;
Weihua Qian, Shanghai, CN;
He Zhu, Shanghai, CN;
Jinguang Zhu, Dalian, CN;
Dapeng Li, Shanghai, CN;
Jeffrey Wei, Kunshan, CN;
Bo Shen, Jiangyin, CN;
Zhi Yang, Xiangtan, CN;
Zunyang Bai, Xiangtan, CN;
Yuan Chen, Xiangtan, CN;
Yabin Zhang, Xiangtan, CN;
Xueliang Lu, Xiangtan, CN;
Jie Zhu, Xiangtan, CN;
Bi Luo, Xiangtan, CN;
Shaohua Zhou, Xiangtan, CN;
SKF (China) Co Ltd, Shanghai, CN;
Hunan SUND Technological Corporation, Xiangtan, CN;
Abstract
A wind turbine planet gear shaft has a shaft body with an outer surface, a segment of the outer surface being a slide bearing surface configured to form a radial slide bearing with an inner opening of a planet gear. The slide bearing surface has a first portion configured as a non-load-bearing zone and a second portion configured as a load-bearing zone and exactly one axially elongate oil pocket in the slide bearing surface, that oil pocket being located in the non-load-bearing zone. An oil supply channel in the shaft body has a first end in communication with the oil pocket, and first and second oil return channels in the slide bearing surface each have a first end at a longitudinal end of the oil pocket and a second end open to ambient air.