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. 15, 1989
Filed:
Jun. 03, 1987
Norbert Ocvirk, Offenbach am Main, DE;
Lutz Weise, Mainz, DE;
Alfred Teves GmbH, Frankfurt am Main, DE;
Abstract
In a brake system with slip control comprising a pedal-actuated vacuum booster and a dual-circuit master cylinder, to which the wheel brakes are connected via brake lines, comprises an auxiliary-pressure source with a hydraulic pump and a pressure-compensating and pressure-fluid supply reservoir wheel sensors and electronic circuits for determining the wheel rotational behavior and for generating electric braking-pressure control signals which serve to control electromagnetically actuatable pressure-fluid inlet valves and outlet valves inserted into the brake lines and into the supply line for slip control, a valve is provided in order to control the auxiliary pressure and to adapt same to the pressure in the pressure chambers of the master cylinder. The wheel brakes of the rear wheels are jointly connected via the supply valve to the supply line which forms the third brake circuit and which is acted upon by controlled pressure, while the wheel brakes of the front wheels are connected to the two static brake circuits in which the non-return valves are inserted.