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:
Sep. 29, 2026
Filed:
Jul. 06, 2023
Nsk Ltd., Tokyo, JP;
Daichi Kosugi, Kanagawa, JP;
Yamato Fukui, Kanagawa, JP;
Tomoyuki Matsuda, Kanagawa, JP;
Taisuke Maruyama, Kanagawa, JP;
Yasuyuki Shimizu, Kanagawa, JP;
NSK LTD., Tokyo, JP;
Abstract
A lubricant supply control method for a device that lubricates a plurality of portions using a lubricant includes: measuring an impedance of an electric circuit including the plurality of portions by applying an AC voltage to the electric circuit; deriving an oil film thickness and a breakage rate of an oil film between the plurality of portions based on the measured impedance; and controlling at least one of a supply amount and a supply timing of the lubricant to the device based on the derived oil film thickness and breakage rate of the oil film so that a lubrication state between the plurality of portions becomes a predetermined lubrication state.