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. 24, 2015
Filed:
Oct. 05, 2011
Takahiro Ito, Hitachinaka, JP;
Kenichiro Matsubara, Kasumigaura, JP;
Hirotaka Oikawa, Yokohama, JP;
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;
Abstract
There is provided a disk brake that can hold a required thrust force and maintain a stop state of a vehicle without increasing complexity in the disk brake even if the disk brake is operated in a high temperature state of a brake pad and then a temperature of the brake pad is reduced. In the disk brake, an electric motoris driven to thrust a piston, the pistonpresses the brake padagainst a disk rotor, and the pistonis held in the pressed position, the electric motoris re-driven after a predetermined time from a start of holding of the piston, and a driving condition of the electric motorafter re-driving is determined based on a change in value of a current supplied to the electric motorby the re-driving.