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. 19, 2026
Filed:
Dec. 18, 2019
Hitachi Astemo, Ltd., Ibaraki, JP;
Sota Suzuki, Hitachinaka, JP;
Tatsuro Kobune, Hitachinaka, JP;
Wataru Yokoyama, Hitachinaka, JP;
Kenichiro Matsubara, Hitachinaka, JP;
HITACHI ASTEMO, LTD., Ibaraki, JP;
Abstract
An electric brake mechanism includes a piston (D) propelled by a rotation-linear motion mechanism () driven by an electric motor (A). The piston (D) is configured to press brake pads (C) against a disc rotor (), and to hold the brake pads (C) at a pressing position by stopping the electric motor (A). A parking brake control device () is configured to determine, when a request (application command) to hold the brake pads (C) is made, a judgment timing for judging whether to stop the electric motor (A) based on a change trend of a current value of the electric motor (A). When the judgment timing is reached, the parking brake control device () judges whether or not to stop the electric motor (A).