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:
Jul. 04, 2023
Filed:
Oct. 04, 2017
Volvo Lastvagnar Ab, Gothenburg, SE;
Lionel Farres, Heyrieux, FR;
Christophe Long, Brindas, FR;
VOLVO LASTVAGNAR AB, Gothenburg, SE;
Abstract
The invention concerns an electronic parking brake system (), comprising an air supply (), a check valve (), connected to the air supply, an electro-pneumatic control unit (), at least one park brake actuator (), a relay valve (), comprising a first port () connected to the check valve, a second port () connected to the electro-pneumatic control unit, a third port () connected to the park brake actuator and a fourth port () which is in communication with the atmosphere, and an electrically actuated valve (), which is controlled by the electro-pneumatic control unit () and which includes a first orifice () connected to a compressed air line () extending between the check valve and the air supply, a second orifice (), a third orifice () connected to the electro-pneumatic control unit (), and preferably a vent orifice. The second orifice () is connected to another compressed air line () extending between the check valve () and the first port () of the relay valve ().