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. 23, 2024
Filed:
Jun. 27, 2019
Wabco Gmbh, Hannover, DE;
Julian Van Thiel, Grossburgwedel, DE;
ZF CV SYSTEMS EUROPE BV, Brussels, BE;
Abstract
An electropneumatic parking brake module includes a supply connection configured to connect a compressed air supply, at least one spring-type actuator connection configured to connect at least one spring brake cylinder, and an inlet-outlet valve unit configured to assume at least a first switching position and a second switching position. The parking brake module further includes an electropneumatic pilot control unit configured to output at least a first control pressure at the inlet-outlet valve unit. In the first switching position of the inlet-outlet valve unit, the spring-type actuator connection is connected to the supply connection for outputting a spring brake pressure, and, in the second switching position of the inlet-outlet valve unit, the spring-type actuator connection is connected to a venting connection of the inlet-outlet valve unit. The inlet-outlet valve unit is in the second switching position when the first control pressure is below a first threshold value.