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:
Jun. 30, 2009
Filed:
Oct. 29, 2004
Atsushi Yokoyama, Tokyo, JP;
Taisetsu Tanimichi, Mito, JP;
Satoru Kuragaki, Isehara, JP;
Yukihiro Osawa, Tokyo, JP;
Jun Kubo, Hino, JP;
Yukihiko Inoue, Ebina, JP;
Katsuya Iwasaki, Isehara, JP;
Mitsuo Sasaki, Hadano, JP;
Tsutomu Hibi, Ebina, JP;
Atsushi Yokoyama, Tokyo, JP;
Taisetsu Tanimichi, Mito, JP;
Satoru Kuragaki, Isehara, JP;
Yukihiro Osawa, Tokyo, JP;
Jun Kubo, Hino, JP;
Yukihiko Inoue, Ebina, JP;
Katsuya Iwasaki, Isehara, JP;
Mitsuo Sasaki, Hadano, JP;
Tsutomu Hibi, Ebina, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A brake system that provides a good pedal feel, that assists stepping force of a driver by a small motor, and that can control braking force of wheels individually. The brake system comprises a first actuator () for increasing a liquid pressure in a master cylinder () by driving torque of a motor (), and a second actuator () capable of driving a brake generating mechanism () without transmitting power to the master cylinder (), wherein the actuators () to be driven are switched depending on the operation of a brake pedal (). The first and second actuators () are connected to hydraulic piping (), and a pressurized oil is supplied to the brake generating mechanism () through hydraulic valve means ().