Vibration damper with variable damping force
US4706787A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 27, 1987 |
| Grant date | Nov 17, 1987 |
| Priority date | — |
| Expiry date | Jan 27, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G17/08
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A vibration damper for vehicles is disclosed with a variable damping force. The vibration damper includes two series-connected damping valve systems which effect a damping force variation by means of a blockable bypass passage. An externally influenceable damping force in at least three stages is obtained in that the bypass passage bridges the two series-connected damping valve systems. This bypass passage has outer passages which open into the chambers separated by the damping valve arrangement and a further intermediate passage which opens to a space between the damping valve systems. At least two passages are closable to change the damping of damping fluid displaced between said chambers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.