Braking system for a trailer vehicle
US7370917B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2002 |
| Grant date | May 13, 2008 |
| Priority date | — |
| Expiry date | Apr 21, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/683
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electro-pneumatic system including relay valves disposed between a pressure supply inlet and outputs respectively, and having respective control inputs; associated solenoid-operated valves each operable in a first or a second condition respectively to allow or prevent connection of the control input of the relay valves respectively to a pneumatic duct; a solenoid-operated commutation valve having respective first and second conditions in which it connects the pneumatic duct to the control input of the system to receive a braking control pressure or to an inlet/outlet aperture of a second solenoid-operated switching valve; and an electronic control unit (ECU) arranged to control the solenoid valves. The second switching valve has respective first and second conditions in which its inlet/outlet aperture is connected to a discharge passage opening to the outside environment or to the supply inlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.