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. 23, 2022
Filed:
Dec. 10, 2021
Tsinghua University, Beijing, CN;
Decai Li, Beijing, CN;
Zhenghao Li, Beijing, CN;
TSINGHUA UNIVERSITY, Beijing, CN;
Abstract
A magnetic fluid sealing device for an oscillating shaft includes a housing, the oscillating shaft, a first seal, a second seal, and a magnetic source. The housing includes a ball head, and a ball hinge is arranged within the housing. The oscillating shaft is swingable with the ball hinge as a center. The first seal and the second seal are arranged on both sides of the ball head. The first seal includes a first toothed ring, and the second seal includes a second toothed ring. Magnetic fluid is filled at sealing gaps between the first and second toothed rings and the ball head. The magnetic source generates a magnetic field along an axial direction of the oscillating shaft.