Patent · US Active

Valve unit for a brake control device

US8297714B2 · kind B2 · utility

9Cited by

12References

18Claims

0Family size

Assignee

WABCO GmbH · DE

Inventors

Uwe Bensch · Hannover, DE
Jörg Helmer · Weingarten, DE
Bernd-Joachim Kiel · Wunstorf, DE
Wilfried Menze · Springe, DE

Key dates

Filing date	Jul 4, 2007
Grant date	Oct 30, 2012
Priority date	—
Expiry date	Apr 22, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60T17/228
WIPO fieldTransport
WIPO sectorMechanical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.