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:
Jan. 07, 2014
Filed:
Sep. 09, 2010
Takashi Watanabe, Nagoya, JP;
Tetsuaki Tsuzuki, Gamagoori, JP;
Kazuma Kondo, Aichi-gun, JP;
Kentaro Yuasa, Kariya, JP;
Takashi Watanabe, Nagoya, JP;
Tetsuaki Tsuzuki, Gamagoori, JP;
Kazuma Kondo, Aichi-gun, JP;
Kentaro Yuasa, Kariya, JP;
Advics Co., Ltd., Kariya, Aichi-Pref., JP;
Abstract
A parking brake control device performs a releasing control with good precision by more precisely maintaining clearance between a friction-applying member and a friction-applied member. During a releasing control, a timing at which a braking force generated by an electric parking brakedrops to zero is detected based on a change in a motor current, and a second releasing operation time is set according to the magnitude of the motor current at the time the braking force drops to zero. This makes it possible for the second releasing operation time to be set in accordance with fluctuations in a motor load due to temperature changes or the like. Therefore, a clearance between a brake pad and a brake disc can be kept constant according to the motor load.