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:
Mar. 09, 2010
Filed:
Jan. 26, 2006
Yuichi Kuramochi, Hitachinaka, JP;
Toshiyuki Innami, Mito, JP;
Yuichi Kuramochi, Hitachinaka, JP;
Toshiyuki Innami, Mito, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An electrically powered brake system capable of performing a self-diagnosis of elements of the electrically brake system to diagnose a failure before a vehicle is driven is provided. The electrically powered brake system having a parking brake having a conversion mechanismconverting a rotary motion of a motorinto a linear motion, propelling a pistonaccording to the rotation of a rotorA of the motorby the conversion mechanism, pressing brake padsandagainst a disc rotorby the piston to generate a braking force, and retaining the braking force by a locking mechanismhas a control unitperforming a diagnosis of elements constituting the system during actuation of the parking brake. The control unit performs a diagnosis of a fail safe relayreceiving the supply of electric power of the motor, and performs diagnoses of a braking force sensor, a rotation angle detecting sensorand a current sensor.