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:
Oct. 31, 1989
Filed:
Jul. 18, 1988
Heinz Leiber, Oberriexingen, DE;
Reinhard Resch, Stuttgart, DE;
Daimler-Benz Aktiengesellschaft, Stuttgart, DE;
Abstract
An antilocking braking system which operates by controlling the pressure reduction and pressure build-up phases at vehicle wheel brakes by changing the volume of a primary chamber of a pressure modulator, to which the wheel brakes are connected via a brake pressure 2/2-way solenoid controlled valve and an inlet valve. The primary chamber of the pressure modulator is connected to a pressure output of a brake booster. The pressure modulator is designed as a hydraulically driven pump whose feed volume per stroke corresponds to approximately 25% to 50% of the maximum brake fluid quantity which can be expelled into the connected brake circuit, and if, when the inlet valve is closed, one stroke of the pump is not sufficient to achieve a required pressure reduction at the connected wheel brakes, then the pump is switched to a return feed mode in that the brake pressure control valves are driven to their blocking positions and the inlet valve is driven to its open position.