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:
Jan. 30, 2024
Filed:
May. 25, 2018
Applicant:
Mitsubishi Electric Corporation, Tokyo, JP;
Inventors:
Takashi Oya, Tokyo, JP;
Masanori Uchimura, Tokyo, JP;
Assignee:
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 15/02 (2006.01); G01N 29/04 (2006.01); H02K 1/26 (2006.01);
U.S. Cl.
CPC ...
H02K 15/02 (2013.01); G01N 29/041 (2013.01); H02K 1/26 (2013.01);
Abstract
The occurrence angle of a crack with respect to a reference line passing by a tooth shoulder portion perpendicularly to the radial direction of a tooth is defined as α. A phased array probe is placed in advance at a position on the outer circumferential surface of a retaining ring that is located in a direction estimated to be perpendicular to the occurrence angle α, and sector scan is performed with an ultrasonic beam radiated from the phased array probe, thereby inspecting whether or not the crack has occurred at the tooth shoulder portion.