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:
Jun. 14, 2022
Filed:
Aug. 19, 2019
Applicant:
Denso Wave Incorporated, Chita-gun, JP;
Inventors:
Assignee:
DENSO WAVE INCORPORATED, Chita-gun, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 31/327 (2006.01); H01H 47/00 (2006.01); G01R 31/50 (2020.01);
U.S. Cl.
CPC ...
G01R 31/3278 (2013.01); G01R 31/50 (2020.01); H01H 47/004 (2013.01);
Abstract
A relay fault diagnosis device includes: at least one C-contact relay that has a common terminal, a normally open terminal and a normally closed terminal; a read-back circuit that is connected to the normally closed terminal of the relay; and a diagnostic section that outputs a test signal to the common terminal to diagnose a fault in the relay.