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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 9387845 B1

PDFFull Text
Date of Patent:
Jul. 12, 2016

Filed:

Nov. 28, 2012

Brake apparatus

Applicant:

Hitachi Automotive Systems, Ltd., Ibraki, JP;

Inventors:

Wataru Yokoyama, Kawasaki, JP;

Takayasu Sakashita, Tokyo, JP;

Jun Watanabe, Yokohama, JP;

Assignee:

HITACHI AUTOMOTIVE SYSTEMS, LTD., Ibaraki, JP;

Attorney:

Wenderoth, Lind & Ponack, L.L.P.

Primary Examiner:

Vishal Sahni

Int. Cl.
CPC ...
B60T 11/10 (2006.01); B60T 8/32 (2006.01); B60T 8/48 (2006.01); B60T 13/58 (2006.01); B60T 13/66 (2006.01); B60T 13/74 (2006.01); F16D 65/00 (2006.01); B60T 13/14 (2006.01); F16D 55/226 (2006.01); F16D 65/18 (2006.01); F16D 66/00 (2006.01);
U.S. Cl.
CPC ...
B60T 11/102 (2013.01); B60T 8/32 (2013.01); B60T 8/4872 (2013.01); B60T 13/146 (2013.01); B60T 13/588 (2013.01); B60T 13/662 (2013.01); B60T 13/741 (2013.01); F16D 55/226 (2013.01); F16D 65/0068 (2013.01); F16D 65/18 (2013.01); F16D 2066/005 (2013.01);
Abstract

Upon a start of a release for releasing a braking state of a parking bake in a process of step, a control unit () performs hydraulic maintaining control by an ESC () in a subsequent step, step. As a result, a hydraulic pressure in a cylinder portion () increases according to a retraction of a piston () of a disk brake (). If the control unit () determines in stepthat the release of the parking brake has been completed, in step, the control unit () releases the hydraulic maintaining control by the ESC (). The hydraulic pressure is temporarily increased in the cylinder portion () of the disk brake (), thereby increasing an elastic deformation amount of a piston seal () to succeed in acquiring a sufficient rollback function.

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