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:
Nov. 05, 2024
Filed:
Oct. 04, 2022
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
An oil deterioration detection device performs an analysis based on impedances at at least three first specific frequencies selected from a first frequency range to calculate an arc of impedance on a Nyquist diagram, the impedances being measured by applying an AC voltage at the at least three first specific frequencies to counter electrodes when oil to be evaluated passes between the counter electrodes, and when the calculated arc is larger than a reference arc calculated in advance of the oil to be evaluated by a predetermined value or larger, determines that moisture is mixed and calculates the amount of moisture based on the shape of the calculated arc.