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:
Jul. 09, 2019
Filed:
Jul. 01, 2015
Central Japan Railway Company, Aichi, JP;
Kei Sakanoue, Aichi, JP;
Masashi Furuya, Aichi, JP;
Hirokazu Kato, Aichi, JP;
Shigekazu Okada, Aichi, JP;
CENTRAL JAPAN RAILWAY COMPANY, Aichi, JP;
Abstract
A railway vehicle having a plurality of electrical circuits is presented herein. The railway vehicle comprises an external power supply connection portion; a contactor of a normally closed type that opens and closes a common line connecting the plurality of electrical circuits to a ground, the contactor opening the common line by receiving supply of electric power through the external power supply connection portion and closing the common line when no current is applied; and an operation prohibition determining unit that determines whether supply of electric power to the plurality of electrical circuits is stopped and that prohibits the contactor from opening the common line when the supply of electric power is not stopped.