Two-stage vehicle spring suspension
US4213633A · kind A · utility
Inventor
Key dates
| Filing date | Jun 29, 1978 |
| Grant date | Jul 22, 1980 |
| Priority date | — |
| Expiry date | Jun 29, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2202/1422
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A two-stage spring suspension is provided by employing vertically acting rectilinear movement shear rubber springs as full range springs, and vertically acting compression springs to provide helper or second stage springs essentially operative only under heavier loading. Desirably the compression springs are in the form of upright action rubber bodies. The subject disclosure is patterned after the single stage suspension shown in my U.S. Pat. No. 3,811,700, dated May 21, 1974. As compared with this patented disclosure, this invention reduces the rubber and metal required, retaining equal capability, stability and rollover or sidesway control, reduces the unsprung weight and cost, has a longer effective life, and, of course, a softer and better ride at low loadings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.