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. 07, 2008
Filed:
Dec. 22, 2004
Masahiko Kamiya, Kariya, JP;
Taro Segawa, Kariya, JP;
Takaaki Matsuhashi, Kariya, JP;
Advics Co., Ltd., Kariya, Aichi-Pref., JP;
Abstract
A vehicle brake device A is provided with a master cylinderfor generating a fluid pressure depending on the stepping state of a brake pedaland a differential pressure control valveconstituted by a solenoid valve of the type that has two portsand is capable of controlling the differential pressure between the both portsand. The differential pressure control valveis connected at its portto an outlet portof the master cylinder. An ECUcontrols the differential pressure control valveto generate a controlled differential pressure corresponding to the pedal operation state of the brake pedalbetween the both portsand. Thus, according to the vehicle brake device A, it can be realized to obtain a pedal feeling which is smooth without suffering any delay in response, to easily alter a reaction force property of the brake pedal for any of various vehicle models, and to decrease in cost as well as dimension.