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. 26, 2021
Filed:
Apr. 05, 2019
Wabco Gmbh, Hannover, DE;
Thomas Schmidt, Hannover, DE;
Julian van Thiel, Hannover, DE;
ZF CV SYSTEMS EUROPE BV, Brussels, BE;
Abstract
An electropneumatic parking brake system for a utility vehicle includes a pilot module configured to control at least a first control pressure. The pilot module has a pilot store connection configured to receive a store pressure from a compressed air device and at least one pilot valve combination. The electropneumatic parking brake system further includes at least one manually actuatable piston valve connected to a valve store connection and having a parking brake connection. The parking brake connection is ventilated in a first switching position of the piston valve and a parking brake pressure at the parking brake connection is controllable in a second switching position of the piston valve. The piston valve has a first pneumatic control connection at which the first control pressure is configured to be controlled in order to pneumatically switch the piston valve.