Fluid-filled active vibration damping device
US6592111B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2002 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Oct 28, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F13/268
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fluid-filled active vibration damping device including: a pressure-receiving chamber partially defined by an elastic body; an oscillating fluid chamber partially defined by an oscillating rubber plate on one side thereof; a first orifice passage for a fluid communication between the pressure-receiving and oscillating fluid chamber, which are filled with a non-compressible fluid; and a working air chamber partially defined by the oscillating rubber plate on the other side thereof, to which an air pressure variation is applied to cause an oscillation of the oscillating rubber plate. A ratio V/Q of a passage volume V of the first orifice passage to a unit flow amount Q of the fluid through the first orifice passage caused by the oscillation of the oscillating rubber plate based on the air pressure variation applied to the working air chamber is held within a range of about 1-10.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.