Semi-active damper for vehicles and the like
US4838392A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 1987 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | Aug 5, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7849
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The damper assembly has improved valve means that includes at least one annular movable valve member of the voice-coil type. Such valve member is formed at least in part of composite material that increases the strength and stiffness of the member, while reducing its coefficient of thermal expansion and its weight. In a preferred embodiment of the invention, the assembly includes two movable annular valve members which are driven in unison with each other such that when one occupies a flow-permitting position the other occupies a flow-inhibiting position. Check valves utilized in the assembly preferably are of a resilient split-ring type.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.