Air suspension system
US9931900B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 25, 2017 |
| Grant date | Apr 3, 2018 |
| Priority date | — |
| Expiry date | May 25, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2500/205
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An air suspension system includes a controller that controls opening/closing of normally-closed electromagnetic switching valves constituting a control valve, a first supply/discharge switching valve, a second supply/discharge switching valve, a first tank switching valve, and a second tank switching valve. The controller controls opening/closing of the electromagnetic switching valves in an order of first control, second control, and third control. In the first control, the control valve is opened. In the second control, the first supply/discharge switching valve and the second supply/discharge switching valve are opened in an opened state of the control valve. In the third control, the control valve, the first supply/discharge switching valve, and the second supply/discharge switching valve are closed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.