Convertible trailer for hauling grain and a harvesting machine
US4101158A · kind A · utility
Inventor
Key dates
| Filing date | Sep 13, 1976 |
| Grant date | Jul 18, 1978 |
| Priority date | — |
| Expiry date | Sep 13, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60P3/42
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The trailer converts from a hopper for hauling grain to an overwidth flatbed with tracks for carrying a harvesting machine. The side and front panels of the hopper fold to a horizontal position from the erected position. The rear panel of the hopper is removable and stores on the folded front panel. A base track extends along each side of the trailer frame. An extensible track is hinged to the base track and folds in a vertical plane from a storage position on top of the base track to an extended position laterally outward of the base track, to increase the trailer width for hauling harvesting machines with wide wheel width. Transverse tapered box beams support the base track and extensible track. A second extensible track has beams that slide into the transverse box beams of the first extensible track for further widening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.