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:
May. 27, 2025
Filed:
Jan. 29, 2021
Nsk Ltd., Tokyo, JP;
Daisuke Kobayashi, Fujisawa, JP;
NSK LTD., Tokyo, JP;
Abstract
A state determination device for a hub unit bearing includes: a holding unit that holds reference information of magnetic characteristics at a predetermined position in the vicinity of a flange portion included in the hub unit bearing; an acquisition unit that acquires measurement information of the magnetic characteristics at the predetermined position of the hub unit bearing; a derivation unit that derives a change amount between the reference information held by the holding unit and the measurement information acquired by the acquisition unit; and a determination unit that determines a state of the hub unit bearing based on the change amount derived by the derivation unit. The predetermined position is a position at which the magnetic characteristics vary with a stress change with respect to the flange portion.