Fluid-filled vibration-damping device and method of controlling the same
US6708963B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2002 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Aug 11, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F13/268
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A vibration-damping device including: an elastic body connecting a first and a second mounting member: a pressure receiving and equilibrium chambers partially defined by the elastic body and a flexible diaphragm, filled with a non-compressible fluid and held in fluid communication through a first orifice passage and a second orifice passage that is tuned higher than the first orifice passage. A shut-off valve mechanism operable to selectively allow and inhibit fluid flows through the second orifice passage, an elastic oscillation plate partially defining the pressure-receiving chamber so that a fluid pressure in the pressure-receiving chamber acts on one surface of the elastic oscillation plate, and a working air chamber partially defined by the other surface of the elastic oscillation plate and oscillated by a periodic air pressure change in the working air chamber, are also incorporated. A method of controlling the same is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.