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:
Aug. 18, 1992
Filed:
Aug. 21, 1990
Mamoru Watanabe, Kawaguchi, JP;
Yasuhiro Miyama, Hunabashi, JP;
Miyako Jidosha Kogyo Kabushikigaisha, Tokyo, JP;
Abstract
A tandem liquid pressure control device for an anti-lock brake system includes a tandem liquid pressure control cylinder disposed between a tandem master cylinder and the vehicle brakes, and a mechanism for driving the liquid pressure control means for movement in a direction causing a reduction or elevation in braking liquid pressure for an anti-lock operation. The liquid pressure control cylinder contains a first liquid pressure control piston adapted to be driven by the driving mechanism for movement in the direction causing pressure reduction or elevation and a second liquid pressure control piston mounted coaxially with the first piston and movably in a floating way, and defines a first and a second liquid pressure control chambers in which the pressures of the braking liquid are controlled by the movement of the first and second pistons. A solenoid valve is provided for cutting off the supply of the braking liquid from the chambers of the master cylinder to the brakes through the first and second liquid pressure control chambers in response to a cutoff signal inputted from an external source, before the first and second pistons are moved.