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, 2026
Filed:
Mar. 19, 2021
Hitachi Astemo, Ltd., Hitachinaka, JP;
Daichi Nomura, Hitachinaka, JP;
Takuya Usui, Hitachinaka, JP;
HITACHI ASTEMO, LTD., Ibaraki, JP;
Abstract
An electric brake apparatus includes an electric motor including driving circuits, a brake mechanism configured to press a braking member against a braking target member based on driving of the electric motor, and a control device configured to control the driving of the electric motor. The control device is configured to detect contact between the braking member and the braking target member based on a change in a current of the electric motor when power is supplied to a part of the driving circuits. A change amount of the current between before and after the braking member and the braking target member contact each other is larger when power is supplied to the part of the driving circuits than when power is supplied to all of the driving circuits.