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:
Jul. 02, 2024
Filed:
Mar. 22, 2023
Shimadzu Corporation, Kyoto, JP;
Hiroaki Kimura, Kyoto, JP;
SHIMADZU CORPORATION, Kyoto, JP;
Abstract
A vacuum pump includes a rotor having a shaft, a base housing the shaft, a thrust disc provided at a lower portion of the shaft, and a magnetic bearing supporting the shaft. The magnetic bearing has a first electromagnet arranged to face an upper surface of the thrust disc, and a second electromagnet arranged to face a lower surface of the thrust disc. The second electromagnet includes a core. The core includes a fastening portion provided with a through-hole into which a bolt that fastens the core to the base is to be inserted. The thickness of the fastening portion in a depth direction of the through-hole is greater than the nominal diameter of the bolt, or the center position of the fastening portion in the depth direction of the through-hole is higher than the center position of the second electromagnet in an up-down direction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile