Multiple hook-up, movable axle trailer with removable track extensions, slidable kingpin, and pivotal axle assemblies
US4111450A · kind A · utility
Inventor
Key dates
| Filing date | Jul 22, 1977 |
| Grant date | Sep 5, 1978 |
| Priority date | — |
| Expiry date | Jul 22, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60P1/6418
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A novel multiple hook-up movable axle trailer is disclosed comprising the features of removable track extensions to allow the positioning of slidable axle assemblies at extreme ends of the trailer to thereby attain a maximum bridging distance between axles. A novel slidable kingpin assembly is also disclosed which may be used to facilitate the alternate end hook-up of an appropriately fitted trailer regardless of the absence of a permanent kingpin in that location. Alternatively, the slidable kingpin assembly may be used in combination with a novel pivotal axle assembly which may either be fixed or have a fork attached thereto and be released for steering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.