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:
Nov. 26, 2024
Filed:
Dec. 17, 2021
Ntn Corporation, Osaka, JP;
Yui Masuda, Iwata, JP;
NTN CORPORATION, Osaka, JP;
Abstract
A controller of an electric brake device includes first, second and third PKB operators. Upon receipt of an instruction to produce a parking brake active state while a parking brake is released, the first PKB operator exerts a braking force without depending on a brake pedal and determines if a desired braking force is exerted. After the determination by the first PKB operator, the second PKB operator makes a movable part ready to come into engagement with an engaged part and causes an electric motor to rotate in a direction in which the braking force is decreased, so that the movable part comes into engagement with the engaged part to prevent the rotation of the electric motor. Then, the third PKB operator produces the parking brake active state where no driving power is generated to the electric motor.