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. 14, 2014
Filed:
Apr. 23, 2010
Applicants:
Satoshi Ishikawa, Makinohara, JP;
Kimihiro Matsuura, Makinohara, JP;
Inventors:
Satoshi Ishikawa, Makinohara, JP;
Kimihiro Matsuura, Makinohara, JP;
Assignee:
Yazaki Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 27/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
A control circuit turns on a switching element to discharge a capacitor, and after a voltage between both ends of the capacitor becomes zero, the control circuit turns off the switching element. The control circuit measures the voltage V, Vbetween both ends of the capacitor after the first predetermined time is passed and after the second predetermined time is passed, and calculate a change rate (V/V). If V/Vis equal to or less than 0.5, the disconnection is detected.