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:
Dec. 13, 2022
Filed:
Jan. 17, 2019
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Tadashi Yoshida, Tokyo, JP;
Ryoji Sasaki, Tokyo, JP;
Hidetaka Nishimura, Nagasaki, JP;
Takeshi Tsuji, Nagasaki, JP;
Abstract
A contact vibration detection devicefor detecting contact vibration due to contact between a rotational shaftand a stationary partincludes: a rotation waveform determination unitconfigured to determine a rotation waveform of the rotational shaftbased on displacement of the rotational shaftduring rotation; a parameter change detection unitconfigured to detect a change in a parameter of at least one of an effective value of the rotation waveform or a phase angle of the rotation waveform; and a contact vibration determination unitconfigured to determine whether the contact vibration occurs based on presence or absence of the change in the parameter.