Vehicle suspension and rotary height control valve for same
US6412790B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2001 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Feb 28, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86646
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A height control valve is preferably adapted to be mounted in a trailing arm suspension and fluidly interconnected to a source of pressurized air and to an air spring. The height control valve comprises a housing having a cylindrical bore, a supply port, an exhaust port and an air spring port each of which extends through the housing and fluidly communicates with the bore. A rotor is preferably rotatably mounted in the bore and interconnected to the arm wherein pivotal movement of the arm rotates the rotor with respect to the housing between first, second and third rotational positions. A plurality of seals is preferably located between the rotor and the bore defining a flow passage between the bore and the rotor wherein in the first rotational position, the flow passage isolates the air spring port from both the supply port and the exhaust port, in the second rotational position the flow passage interconnects the air spring port with the supply port, and in the third rotational position the flow passage interconnects the air spring port with the exhaust port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.