Hydraulic anti-vibration devices
US5297781A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 18, 1993 |
| Grant date | Mar 29, 1994 |
| Priority date | — |
| Expiry date | Mar 18, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F13/264
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic anti-vibration support includes a rigid frame 3, a head 1, a frustoconical elastomer wall 6 connecting the cylinder to the head, a membrane 7 carried by the cylinder, a partition 8 separating the inside of the resulting liquid-filled enclosure into a working chamber A and a compensating chamber B, a throttled passage 9 interconnecting the two chambers, a small displacement piston 12, and an electrical exciter 14 suitable for setting up counter-vibrations in the piston. An air-filled capsule 19 defined by the piston and by a rigid wall 20 secured to the frame by a slotted spacer 21 is immersed in the working chamber, the piston being disposed between the wall and the exciter, and the periphery of the piston being connected to the wall by a sealed and deformable annular gasket 23.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.