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.

Date of Patent:
Mar. 23, 2010

Filed:

Jun. 12, 2006
Applicants:

Ikuo Nonaga, Saitama, JP;

Hiroshi Koan, Saitama, JP;

Akihiko Koike, Saitama, JP;

Tsuyoshi Sato, Saitama, JP;

Makoto Taniguchi, Saitama, JP;

Yutaka Kichima, Saitama, JP;

Ichiro Ueno, Saitama, JP;

Katsuyuki Takei, Saitama, JP;

Takashi Kuboshima, Saitama, JP;

Inventors:

Ikuo Nonaga, Saitama, JP;

Hiroshi Koan, Saitama, JP;

Akihiko Koike, Saitama, JP;

Tsuyoshi Sato, Saitama, JP;

Makoto Taniguchi, Saitama, JP;

Yutaka Kichima, Saitama, JP;

Ichiro Ueno, Saitama, JP;

Katsuyuki Takei, Saitama, JP;

Takashi Kuboshima, Saitama, JP;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B60T 8/60 (2006.01);
U.S. Cl.
CPC ...
Abstract

A brake system for a vehicle includes an electrically operated parking brake drive device which generates an operating force for operating the wheel brakes or dedicated parking brakes in response to energization, and which operates even upon cancellation of the energization while in the operated state. A braking force related amount detector detects a physical quantity related to a braking force exhibited by each of the hydraulic pressure operated wheel brakes. When a detected physical quantity exceeds a reference value in a stopped state of the vehicle, a controller energizes the electrically operated parking brake drive device. Thus, the frequency of operation of the electrically operated parking brake drive device is decreased while eliminating inconvenient operations required to operate the electrically operated parking brake drive device, thereby reducing noise and improving durability.


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