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:
Apr. 03, 2001
Filed:
Oct. 29, 1999
Mark Bayens, Frankfurt am Main, DE;
Alfred Eckert, Mainz-Hechtsheim, DE;
Thomas Berthold, Darmstadt, DE;
Jürgen Pfeiffer, Glashütten, DE;
Christof Klesen, Modautal, DE;
Abstract
A brake system for motor vehicles with an adjustable pneumatic brake force booster includes a control valve which can be actuated by an electromagnet independently of the driver's actions. A brake pressure controller generates signals which serve to actuate the electromagnet. In order to be able to implement a quick-action, low-noise pressure regulating system at low cost, the brake pressure controller (,) is formed by connecting in parallel an electromagnetic control circuit (,) that processes the nominal brake pressure signal (P,) into a first current value (I,) and a regulating circuit (,) that processes a control difference (&Dgr;P) formed from the nominal brake pressure signal (P,) and the actual pressure signal (P,) into a second current value I,, with the output variable (I,) of the brake pressure controller (,) being formed by adding together the two current values (I,, I,).