Rotary damper
US6536565B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2001 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Mar 6, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2204/129
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A rotary damper for use in motor vehicle suspensions comprising a rotor disposed within damping fluid in a fluid chamber of a case to form fluid volumes, with valves for flow control and an accumulator for fluid fill variation and thermal expansion mounted internal to the rotor. A first check valve and first control valve mounted in a first flow passage within the rotor allow flow from second fluid volume to first fluid volume, but restrict flow from the first fluid volume to the second fluid volume. Similarly, a second check valve and a second control valve mounted in a second flow passage within the rotor allow flow from the first fluid volume to the second fluid volume, but restrict flow from the second fluid volume to the first fluid volume. Thus, the valves are configured to provide independent control of damping for each direction of rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.