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. 30, 2012
Filed:
Jul. 04, 2007
Uwe Bensch, Hannover, DE;
Jörg Helmer, Vogt, DE;
Bernd-joachim Kiel, Wunstorf, DE;
Wilfried Menze, Springe, DE;
Uwe Bensch, Hannover, DE;
Jörg Helmer, Vogt, DE;
Bernd-Joachim Kiel, Wunstorf, DE;
Wilfried Menze, Springe, DE;
WABCO GmbH, Hannover, DE;
Abstract
An electropneumatic brake control device for controlling an air-quantity-boosting valve device which controls a parking brake of a vehicle. A valve unit is provided that has a vent valve for venting a control input of the air-quantity-boosting valve device. The vent valve has three states. In a first state, the control input of the air-quantity-boosting valve device can be vented in a throttled manner by using an aperture. In a second state, the control input of the air-quantity-boosting valve device cannot be vented. In a third state, the control input of the air-quantity-boosting valve device can finally be vented in an unthrottled manner.