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:
May. 15, 1990
Filed:
Sep. 08, 1988
Hans Holst, Hanover, DE;
Klaus Lindemann, Hanover, DE;
Manfred Saba, Ronnenberg, DE;
Hans-Harald Kaess, Isernhagen, DE;
Erwin Petersen, Wunstorf, DE;
WABCO Westinghouse Fahrzeugbremsen GmbH, Hanover, DE;
Abstract
An anti-lock brake system for vehicles with an electronic system which regulates the braking pressure of a monitored wheel as a function of the wheel speed, so that locking is prevented. The system is designed so that each wheel has its own speed sensor, and both wheels of one axle are pressurized with pressure medium by means of a joint control valve controlled by the electronic system. This arrangement corresponds to that of a select-low regulation. To shorten the extended braking distance on roads with different traction on each side, which occurs with a select-low regulation, the control system is designed so that when a retard signal (-b) occurs, the electronic system does not switch as usual to 'remove pressure', but, at least until the occurrence of a slip signal (.lambda.), the control valve is switched to the 'maintain pressure' position.