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:
Feb. 11, 2014
Filed:
Jul. 24, 2008
Yasuharu Itano, Chiyoda-ku, JP;
Hiroshi Yamada, Chiyoda-ku, JP;
Etsuji Matsuyama, Chiyoda-ku, JP;
Hiroshi Yoshikawa, Chiyoda-ku, JP;
Yasuharu Itano, Chiyoda-ku, JP;
Hiroshi Yamada, Chiyoda-ku, JP;
Etsuji Matsuyama, Chiyoda-ku, JP;
Hiroshi Yoshikawa, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Chiyoda-Ku, Tokyo, JP;
Abstract
To provide a train braking device including a controller that controls a brake cylinder pressure acting on a brake cylinder based on a service brake command or an emergency brake command, the train braking device includes a supply valve for supplying compressed air to the brake cylinder and an exhaust valve for adjusting a pressure of the supplied compressed air. The controller includes an electromagnetic-valve drive circuit, which includes a first switch circuit that a first switch for slide control is connected in parallel to ends of a serially connected circuit of a first switch for emergency brake and a first switch for service brake control with its one end being connected to a circuit power supply and the other end being connected to the supply valve, and a second switch circuit that a second switch for slide control is connected in parallel to ends of a serially connected circuit of a second switch for emergency brake and a second switch for service brake control with its one end being connected to the first switch circuit and the other end being connected to the exhaust valve.