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:
Jun. 30, 1992
Filed:
Feb. 14, 1991
Guenther Schmidt, Tamm-Hohenstange, DE;
Roland Holzmann, Stuttgart, DE;
Alfred Sigl, Serheim, DE;
Karl-Heinz Willmann, Freiberg/N, DE;
Wolf-Dieter Jonner, Beilstein Schmidhausen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A vehicle brake system having at least two brake pressure lines, via which a master brake cylinder communicates with wheel brake cylinders, at least one valve is incorporated in each brake pressure line to close the brake pressure lines in the event of anti-skid control. Each brake pressure line is also assigned a return pump, which bypasses the valve. At least one valve, in the currentless state or with the absence of pressure buildup in a brake pressure line, blocks this brake pressure line and communicates with a control unit for pulsed opening upon pressure buildup in the brake pressure line. Because of the additional disposition of a pressure valve and check valve in a bypass around the pulsed valve, expensive pressure reducers are dispensed with, with little additional expense in the anti-skid control system. Even if the anti-skid control system fails, stability during braking is assured.