Method for limiting endstop collisions in semi-active seat suspension systems
US6424894B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 2, 2001 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | May 2, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2220/20
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method for limiting endstop collisions when non-typical inputs are experienced and also when the seat is leveled at a position above or below the normal leveling zone limits. According to the method of the invention a temporary or transient control method referred to as rebound control method causes a large damping force to be applied by the seat suspension system in response to non-typically large inputs. The large damping force is applied until a duration timer timesout. Also according to the invention, a level control algorithm provides additional damping when the seat is leveled outside the normal leveling zone. The degree of additional damping provided is a function of the distance the seat exceeds the normal leveling zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.