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:
Dec. 28, 2021
Filed:
Aug. 20, 2018
Haldex Brake Products Aktiebolag, Landskrona, SE;
Dudley Harrison, Solihull, GB;
Carl Mellings, Redditch, GB;
Georg Sulzyc, Mannheim, DE;
Christian Schering, Vreden, DE;
Siegfried Heer, Wiesloch, DE;
Stefan Becke, Altlussheim, DE;
Joachim Noecker, Eberbach, DE;
Tobias Tschoeke, Heidelberg, DE;
Arne Busch, Frankenthal (Pfalz), DE;
HALDEX BRAKE PRODUCTS AKTIEBOLAG, Landskrona, SE;
Abstract
An air suspension system of a commercial vehicle comprises an electronic control device with a level control valve device. A valve element is coupled to a drive element mechanically coupled to a vehicle wheel or axle. In a first relative position of the valve element and a counter valve element, a port for an air suspension bellow is blocked. In a second relative position, the port for the air suspension bellow is connected to a port for an aeration device. In a third relative position, the port for the air suspension bellow is connected to a port for a deaeration device. Control logic generates a control signal for an actuator which, when a level change is set by an operator, correspondingly changes the relative position of the valve element and the counter valve element or the relative position of the counter valve element and a valve housing.