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:
Jan. 09, 2001
Filed:
Sep. 08, 1999
Chun-Hung Huang, Hsinchu, TW;
Yung-Hsian Lai, Taichung, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A preloading bearing unit mounted in a casing to support an antifriction bearing and the output shaft of a motor, the preloading bearing unit including a bushing mounted on the antifriction bearing, and a hydraulic cylinder assembly controlled to display the bushing, the hydraulic cylinder assembly including first and second miniature hydraulic cylinders alternatively arranged around the bushing, the first and second miniature hydraulic cylinders each having a spring stopped against the bushing, first and second hydraulic fluid delivery pipes connected to the miniature hydraulic cylinders, first and second accumulation chambers for guiding a hydraulic fluid to the first miniature hydraulic cylinders and the miniature hydraulic cylinders respectively. A difference preloading pressure is given to the bushing by turning on the first miniature hydraulic cylinders, the second miniature hydraulic cylinders, or both the first and second miniature hydraulic cylinders.