Hydraulic antivibration devices
US5411243A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 14, 1994 |
| Grant date | May 2, 1995 |
| Priority date | — |
| Expiry date | Feb 14, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F7/145
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A hydraulic antivibration device comprises, between its two chambers, two passages (8, 10) connected in parallel, and it also comprises a rotary shutter (11) having the same axis (X) as the device and suitable for opening or closing, at will, at least one of the two passages and also slots that put the chambers into communication with a decoupling shutter member. Angular displacement of the shutter is controlled by successively exciting two small antagonistic electromagnets (14, 15) housed in the outer portion of the intermediate partition (7) and suitable for attracting a ferromagnetic armature (16) of the shutter member, which armature is urged towards an intermediate position by a small spring (17).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.