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:
May. 21, 2019
Filed:
Aug. 30, 2016
Nidec Elesys Corporation, Kawasaki-shi, Kanagawa, JP;
Yutaka Watanabe, Kawasaki, JP;
NIDEC ELESYS CORPORATION, Kanagawa, JP;
Abstract
An electrical parking brake device includes an operation switch and a control circuit. The operation switch includes a switch button, miniature switches, operation switch terminals and inside conductors, the switch button being in one of an On state, an Off state and a neutral state, the miniature switches operating in conjunction with the state of the switch button. The control circuit includes control circuit terminals, a switch verification circuit, management circuitry and brake application command circuitry, the management circuitry managing the electrical parking brake device. The operation switch defines closed circuits that are independent in terms of a pair of the operation switch terminals, for each of the operating states. The closed circuits are closed circuits that, when one or more of the miniature switches fail, avoids influence of the failure, by the miniature switches other than the one or more failing miniature switches.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile