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:
Jul. 05, 2005
Filed:
Aug. 19, 1999
Masayasu Ohkubo, Okazaki, JP;
Kiyoharu Nakamura, Seto, JP;
Akira Sakai, Toyota, JP;
Shinichi Soejima, Susono, JP;
Amane Shimura, Anjo, JP;
Masayasu Ohkubo, Okazaki, JP;
Kiyoharu Nakamura, Seto, JP;
Akira Sakai, Toyota, JP;
Shinichi Soejima, Susono, JP;
Amane Shimura, Anjo, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
Hydraulic pressure control apparatus for controlling a pressure of a brake cylinder pressure, including a pump device connected to the brake cylinder and including at least one set of a pump for delivering a pressurized fluid to the brake cylinder and a pump operating electric motor, a low-pressure source for storing the fluid discharged from the brake cylinder, a solenoid-operated pressure control valve disposed between the low-pressure source and the brake cylinder and operated with an electric energy applied thereto, for controlling the brake cylinder pressure depending upon the electric energy, and a controller including a pressure increase control device for increasing the brake cylinder pressure by controlling the electric motor, and a pressure reduction control device or reducing the brake cylinder pressure by controlling the electric energy applied to the control valve.