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:
Dec. 17, 1996
Filed:
Jul. 25, 1995
Hiroaki Takeuchi, Toyota, JP;
Masashi Sawada, Chiryu, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
A hydraulic braking system for an automobile vehicle includes a first brake pressure control circuit and a second brake pressure control circuit, each of which includes a front solenoid valve disposed between one of the front wheel brakes and one of pressure chambers of a tandem master cylinder, a rear solenoid valve disposed between one of the rear wheel brakes and the pressure chamber, a hydraulic pump whose outlet communicates with a conduit located between the solenoid valves and the pressure chamber, a change over valve disposed between the solenoid valves and the pressure chamber, the change over valve being positionable in a first position which connects the solenoid valves to the pressure chamber and a second position which connects the inlet of the hydraulic pump to the pressure chamber, a front orifice disposed between the front wheel brake and the inlet of the hydraulic pump, a rear orifice disposed between the rear wheel brake and the inlet of the hydraulic pump, and a check valve disposed between the rear wheel brake and the inlet of the hydraulic pump for preventing brake fluid from flowing into the rear wheel brake.