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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.:

US 10046744 B1

PDFFull Text
Date of Patent:
Aug. 14, 2018

Filed:

Mar. 09, 2015

Brake apparatus

Applicant:

Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;

Inventors:

Toshiya Oosawa, Yokohama, JP;

Asahi Watanabe, Kawasaki, JP;

Assignee:

Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;

Attorney:

Crowell & Moring LLP

Primary Examiner:

Thomas W Irvin

Int. Cl.
CPC ...
B60T 7/04 (2006.01); B60T 8/94 (2006.01); B60T 13/14 (2006.01); B60T 13/66 (2006.01); B60T 13/68 (2006.01); B60T 8/40 (2006.01); B60T 8/48 (2006.01);
U.S. Cl.
CPC ...
B60T 8/94 (2013.01); B60T 7/042 (2013.01); B60T 8/4081 (2013.01); B60T 8/4827 (2013.01); B60T 13/146 (2013.01); B60T 13/662 (2013.01); B60T 13/686 (2013.01); B60T 2270/403 (2013.01); B60T 2270/82 (2013.01);
Abstract

An object of the present invention is to provide a brake apparatus capable of acquiring a stable brake performance. A brake apparatus includes a master cylinder configured to be activated according to a brake operation performed by a driver, a reservoir tank divided into at least a first chamber connected to a wheel cylinder via the master cylinder and a second chamber connected to a hydraulic source configured to increase a pressure of brake fluid and transmit the brake fluid to the wheel cylinder, a brake control unit configured to perform brake control of transmitting the brake fluid to the wheel cylinder, and a fluid level detection unit configured to detect a fluid level of the brake fluid in the reservoir tank. The brake control unit is provided so as to be able to perform first brake control of transmitting the brake fluid from the first chamber to the wheel cylinder with use of the master cylinder, thereby increasing a pressure in this wheel cylinder, and second brake control of transmitting the brake fluid in the second chamber to the wheel cylinder with use of the hydraulic source, thereby increasing a pressure in this wheel cylinder. The brake control unit switches brake control between the first brake control and the second brake control according to the fluid level detected by the fluid level detection unit.

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