Truck suspensions incorporating asymmetric leaf springs
US8434747B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2006 |
| Grant date | May 7, 2013 |
| Priority date | — |
| Expiry date | May 17, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2206/428
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A suspension system for supporting fore- and aft extending frame members of a vehicle chassis on a hollow axle, the system on one side of the vehicle being duplicated on the opposite side. Included in the suspension on each side are: (1) a frame bracket for pivotally supporting the fore or leading end of an asymmetric leaf spring; (2) a spring end support mounted on the frame side member for supporting the aft or trailing end of the leaf spring, and (3) a suitable assembly for attaching the leaf spring at a location intermediate its opposite ends to the axle so that the spring is divided into two cantilever limbs extending in opposite directions from the center line of the axle. The spring is formed so that one of the cantilever limbs has a stiffness substantially greater than the stiffness of the other limb. In all forms, at least one leaf of the asymmetric spring extends the full length of the spring. In one particular form the spring has a shorter leaf with an end portion extending over the axle with an air spring mounted either directly over the axle or on one side of the axle. Instead of having two leafs, the asymmetric spring may be formed as a tapered convolute single-leaf s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.