Variable rate secondary spring for a primary leaf suspension spring
US5035406A · kind A · utility
15Cited by
9References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1989 |
| Grant date | Jul 30, 1991 |
| Priority date | — |
| Expiry date | Mar 9, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F1/3686
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A vehicle spring suspension system comprising a primary spring and a secondary spring attached to the primary spring for aiding the primary spring to restore vehicle height and to carry increasing loads placed on or in the vehicle. The secondary spring is connected at one end by an assembly which can have serveral different arrangments for varying the load supporting function of the secondary spring on the primary spring, depending on the need for more or less load carrying cooperation between the primary and secondary springs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.