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:
Mar. 08, 1988
Filed:
Jul. 24, 1986
Wolfram Seibert, Pfungstadt, DE;
Norbert Ocvirk, Offenbach, DE;
Juergen Schonlau, Niedernhausen, DE;
Guenter Trach, Offenbach, DE;
Alfred Teves GmbH, Frankfurt am Main, DE;
Abstract
For attaining an abrupt change in ratio, in a slip-controlled brake system for automotive vehicles, the chamber (11) of a fast-fill cylinder (4) is connected to a plunger chamber (41) of the braking pressure generator (1) which is acted upon by the booster piston (40), while the pressure line (7) leading from the plunger chamber (41) to the fast-fill cylinder (4) contains a pressure-controlled directional control valve (8) governing a pressure-fluid conduit to the pressure-supply reservoir (31). The annular chamber (50) of the fast-fill cylinder (4) is connected by way of a return line (55) to the pressure-supply reservoir (31) and with the prechamber (18) of the master cylinder (15) by way of a pressure line (56), while a pressure-controlled two-way/two-position directional control valve (9) with a non-return valve connected in parallel thereto is arranged in the return line (55). Upon failure of the auxiliary-energy supply system (2), the stepped piston (12), the valve (8) and the piston (51) of the intermediate member (39) remain in their inactive position so that the pressure build-up in the brake circuits (36, 37) is affected through the pistons (32, 33) exclusively.