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. 26, 2024
Filed:
Dec. 27, 2017
Kawasaki Jukogyo Kabushiki Kaisha, Kobe, JP;
Tetsuya Taguchi, Kakogawa, JP;
Shinji Kitamura, Kako-gun, JP;
Makoto Kawai, Akashi, JP;
Tetsuo Kaneda, Kobe, JP;
KAWASAKI JUKOGYO KABUSHIKI KAISHA, Kobe, JP;
Abstract
A failure diagnosis device for a reduction gear is a failure diagnosis device for a reduction gear provided to a mechanical apparatus driven by a motor so that the reduction gear slows down rotation power of the motor and transmits the power to an operating part of the mechanical apparatus. The device identifies an acceleration/deceleration period during which operation of the mechanical apparatus accelerates and/or decelerates, and determines whether the reduction gear indicates a sign of failure based on a change in frequency spectrum of motor current with respect to a change in a rotation speed of the motor during the acceleration/deceleration period.