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. 24, 2022
Filed:
Feb. 15, 2018
Hitachi Automotive Systems, Ltd., Ibaraki, JP;
HITACHI ASTEMO, LTD., Ibaraki, JP;
Abstract
An electronic booster includes an electric motor configured to thrust a piston in a master cylinder, a stroke detection device configured to detect a movement amount of an input member connected to a brake pedal, a rotational angle detection portion configured to detect a rotational angle of a rotational shaft of the electric motor, a control device configured to control driving of the electric motor, and a casing containing a wiring electrically connecting the electric motor and the control device to each other. The stroke detection device includes a first magnet configured to move together with the input member and a first magnetism detection element configured to detect magnetism from the first magnet. The rotational angle detection portion includes a second magnet configured to move together with the rotational shaft of the electric motor and a second magnetism detection element configured to detect magnetism from the second magnet.