Two-stage solenoid valve for an electropneumatic valve control unit
US8539979B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2007 |
| Grant date | Sep 24, 2013 |
| Priority date | — |
| Expiry date | Oct 14, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/88005
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A two-stage solenoid valve for an electropneumatic valve control unit, e.g., a pilot control unit of a pressure modulator, includes a solenoid system to which a first and second current intensity can be applied as well as a solenoid valve device with a primary side connectable to a first compressed-air supply and a secondary side connectable to a second compressed-air supply. A primary valve encompassing an adjustable primary armature biased by a primary armature spring is provided on the primary side, and a secondary valve encompassing an adjustable secondary armature biased by a secondary armature spring is provided on the secondary side. The solenoid valve device can be a valve cartridge insertable from one side. Diameters of a front (in relation to insertion direction) region and a central region of the valve cartridge are smaller than or equal to the diameter of a rear region of the valve cartridge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.