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:
Apr. 19, 2005
Filed:
Jan. 31, 2002
Hiroatsu Endo, Toyota, JP;
Tatsuya Ozeki, Nissin, JP;
Akira Kasamatsu, Toyota, JP;
Nobuyuki Nagashima, Toyota, JP;
Mitsuhiro Umeyama, Okazaki, JP;
Hisanori Nomoto, Toyota, JP;
Yuji Iwase, Susono, JP;
Akira Murakami, Susono, JP;
Mitsuhiro Nada, Toyota, JP;
Hiroatsu Endo, Toyota, JP;
Tatsuya Ozeki, Nissin, JP;
Akira Kasamatsu, Toyota, JP;
Nobuyuki Nagashima, Toyota, JP;
Mitsuhiro Umeyama, Okazaki, JP;
Hisanori Nomoto, Toyota, JP;
Yuji Iwase, Susono, JP;
Akira Murakami, Susono, JP;
Mitsuhiro Nada, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A first hydraulic pump and a second hydraulic pump are respectively mounted to both ends of a rotary shaft in an electric motor, whereby it is possible to drive both of the first hydraulic pump and the second hydraulic pump by one electric motor. Since the electric motor is driven and controlled so as to have any higher rotational speed among a rotational speed of the first hydraulic pump for obtaining an amount of working fluid required in a hydraulic control circuit for a power steering apparatus and a rotational speed of the second hydraulic pump for obtaining an amount of working fluid required in a hydraulic control circuit for a power train by a hydraulic pump drive controlling portion, it is possible to necessarily and sufficiently secure the working fluids respectively required in the power steering hydraulic control circuit and the power train hydraulic control circuit which are independent from each other, by a little electric power consumption.