Movable subframe for tractor-trailers
US5720489A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 1995 |
| Grant date | Feb 24, 1998 |
| Priority date | — |
| Expiry date | May 17, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D33/08
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A movable subframe or slider for a tractor-trailer includes a pair of elongated spaced-apart parallel main members and at least one generally K-shaped cross member structure which extends between and is attached to the main members. Specifically, the K-shaped cross member structure includes a base member which extends perpendicularly between and is attached to the main members, and further includes a pair of inclined members, each of which extends angularly between and is attached to a respective one of the main members and the base member. Each of the main members is adapted to be slidably mounted on a respective one of a pair of depending parallel rails of a trailer, and a retractable pin mechanism enables selective positioning of the slider along the rails for variable load distribution of cargo contained in the trailer. A hanger depends from each of the main members adjacent to the ends of the base member for supporting an axle/suspension system. Components of the axle/suspension system also are mounted directly on and adjacent to the inclined members. The K-shaped cross member structure enables the slider to be relatively lightweight yet have improved capability for withstandi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.