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:
Sep. 15, 2020
Filed:
Dec. 21, 2018
Yazaki Corporation, Tokyo, JP;
Yoshihiro Kawamura, Makinohara, JP;
YAZAKI CORPORATION, Minato-ku, Tokyo, JP;
Abstract
A ground fault detection apparatus includes a detection capacitor, termination resistors on positive- and negative-electrode sides, bypass resistors on positive- and negative-electrode sides, a bypass twin relay, twin relays on positive- and negative-electrode sides, and a control unit configured to compare a first full-charge voltage obtained with the positive-electrode-side twin relay in a first state, the negative-electrode-side twin relay in a second state and the bypass twin relay in a first state, with a second full-charge voltage obtained with the positive-electrode-side twin relay in a second state, the negative-electrode-side twin relay in a first state and the bypass twin relay in the first state, and determines that negative-electrode-side insulation resistance is lowered when the second full-charge voltage is smaller and when degree of the smallness is great.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile