Suspension device comprising a spring corrector
US6161844A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 1998 |
| Grant date | Dec 19, 2000 |
| Priority date | — |
| Expiry date | May 14, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2600/182
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The suspension device controls the range of movement between a suspended point connected to the body 3 of a vehicle and a non-suspended point connected to a wheel 2 which includes an elastic link 1 mounted between said suspended and non-suspended points, the elastic link being essentially composed of a spring of stiffness K and predetermined length under a reference load and a reversible electric jack 5 acting parallel to the spring 4 in order to control the movements between said suspended and non-suspended points. The device controls the electric jack so that, based on a variation observed in the distance between the suspended and non-suspended points caused by relative displacement of the suspended and non-suspended points, regardless of the direction of displacement, it first follows the spring while supplying the electric jack 5 with electrical energy so that it develops a force oriented in the same direction as the displacement, and then releases the force developed by the electric jack 5 so as to cancel out the force within a predetermined relaxation time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.