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:
Apr. 13, 2021
Filed:
Mar. 15, 2017
Applicant:
Ntn Corporation, Osaka, JP;
Inventors:
Yosuke Suzuki, Kuwana, JP;
Toru Takahashi, Kuwana, JP;
Assignee:
NTN CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F03D 17/00 (2016.01); G01H 1/00 (2006.01); G01H 17/00 (2006.01); G01M 13/045 (2019.01); F03D 80/70 (2016.01);
U.S. Cl.
CPC ...
F03D 17/00 (2016.05); G01H 1/003 (2013.01); G01H 17/00 (2013.01); G01M 13/045 (2013.01); F03D 80/70 (2016.05); F05B 2260/96 (2013.01); F05B 2270/334 (2013.01); F05B 2270/807 (2013.01);
Abstract
A first vibration sensor measures vibration of a bearing. A second vibration sensor for measuring background noise received by the first vibration sensor is installed so as not to receive vibration of the bearing. A data acquisition device receives a first signal that is a measurement signal of the first vibration sensor and a second signal that is a measurement signal of the second vibration sensor and outputs a third signal obtained by subtracting the second signal from the first signal as data indicating vibration of the bearing.