Vibration damping device
US5180145A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 1991 |
| Grant date | Jan 19, 1993 |
| Priority date | — |
| Expiry date | May 30, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F2230/10
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A vibration damping device is comprised of first and second axially spaced end housings adapted to be mounted on spaced apart structures, and has a tapered intermediate member mounted on the second housing converging toward an open end of the first housing. A piston is mounted on an end of a rod which is connected to the first housing and extends through a bore formed in the intermediate member and forms a restricted flow orifice extending between the spaced apart housings. A pair of elastomeric sleeves extend between the intermediate portion and the piston and the first housing to form a pair of fluid chambers connected by the orifice. An elongated electrode preferably contacts an electrorheological fluid flowing between the chambers through the orifice. The tapered intermediate member is nestable within the interior of the first housing when the device is in a jounce condition and the tapered piston is nestable within the interior of the intermediate member when the device is in a rebound condition to provide a compact damping device without sacrificing stroke length, and which enables the length of the electrode to be independent of the stroke length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.