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:
Oct. 15, 2024
Filed:
Mar. 09, 2020
Applicant:
Hitachi Astemo, Ltd., Ibaraki, JP;
Inventors:
Daisuke Goto, Hitachinaka, JP;
Haruhiko Fujita, Hitachinaka, JP;
Assignee:
HITACHI ASTEMO, LTD., Ibaraki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60T 8/175 (2006.01); B60T 17/22 (2006.01);
U.S. Cl.
CPC ...
B60T 17/22 (2013.01); B60T 8/175 (2013.01);
Abstract
A rear electric brake electronic control unit (ECU) includes a delay circuit between a microcomputer of the rear electric brake ECU and a switch for driving a solenoid of a parking mechanism. The delay circuit is configured to delay a signal for driving the switch. The rear electric brake ECU further includes a diagnosis circuit for diagnosing an actuation state of the microcomputer. The diagnosis circuit is able to shut off a power supply to the solenoid regardless of a state of a signal of the solenoid if the actuation state of the microcomputer is abnormal.