Adjustment of zero spring rate suspensions
US5024111A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 30, 1989 |
| Grant date | Jun 18, 1991 |
| Priority date | — |
| Expiry date | Oct 30, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F15/04
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An adjustment system for a suspension system having the property of providing a zero spring rate response to limited vertical excursions from a reference level, the suspension system including a load suspension spring supported from a load spring anchor. The adjustment system includes a rigid reference element below the suspension spring, bi-directional drive means between the load spring and the load spring anchor, and a probe insertable into an aperture in the reference element. Circuit means are responsive to the location of the probe relative to the reference element, to adjust the elevation of the load spring relative to the reference level and thereby to tend to restore the reference element to the reference level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.