Valve for magnetorheologic fluids
US8302327B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 18, 2010 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | Dec 3, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2082
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve for magnetorheological fluids is formed with a control duct in which the magnetic field of a magnetic device, consisting of a permanent magnet and coil, acts on the fluid. The viscosity of the fluid is directly proportional to the magnetic field strength, with the result that the flow resistance of the valve can be varied via the coil current. The respective control duct is arranged in the end-face region of the coil and runs radially with respect to the center line of the valve, with the result that high flux densities can be achieved in the control duct. A permanent magnet is arranged in the inner space of the coil and, even under currentless operating conditions, can close the valve up to a certain blocking pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.