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. 17, 2001
Filed:
Dec. 02, 1998
Glenn R. Gualdoni, Milford, MI (US);
Patrick H. Hool, St Clair, MI (US);
Serge G. Avenel, Novi, MI (US);
Frank P. Lubischer, Boppard, DE;
Norbert Sternal, Troy, MI (US);
Kelsey-Hayes Company, Livonia, MI (US);
Abstract
A vehicle brake system including a wheel brake and a master cylinder operable to provide pressurized fluid to the wheel brake. The master cylinder includes a housing having a bore formed therein, and further including a piston slidably disposed in the bore. The brake system further includes a fluid reservoir in selective fluid communication with the bore of the master cylinder. The brake system also includes an isolation valve movable between an open position, wherein fluid is permitted to flow between the master cylinder and the wheel brake, and a closed position, wherein fluid is restricted from flowing between the master cylinder and the wheel brake. The brake system further includes a dump valve movable between a closed position, wherein fluid is prevented from flowing between the wheel brake and the reservoir, and an open position, wherein fluid is permitted to flow between the wheel brake and the reservoir. The brake system additionally including a cut-off valve movable between an open position, wherein fluid is permitted to flow between the dump valve and the reservoir, and a closed position, wherein fluid is restricted from flowing between the dump valve and the reservoir.