Dual leaf spring suspension
US3933367A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 3, 1974 |
| Grant date | Jan 20, 1976 |
| Priority date | — |
| Expiry date | Jul 3, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G5/047
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
For a motor vehicle suspension of the type including dual leaf spring assemblies and a connecting rocker arm, a pair of elongated generally coextensive downwardly arched leaf springs in laminar coactive load-supporting relation include a front end attachment eye on the upper of the springs and a fail-safe terminal portion on the lower of the springs substantially enveloping the eye. The rear end portions of the springs have nested upwardly arched load supporting portions for engagement with the rocker arm. In non-loaded and normally loaded conditions of the associated vehicle the leaf springs provide constant rate spring action, and when excessive suspension random loads must be supported supplementary compression spring means carried by the leaf springs engage the vehicle frame with progressively increasing spring rate and avoid overstressing the leaf springs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.