Retractable king pin vehicle
US4657274A · kind A · utility
33Cited by
5References
8Claims
0Family size
Inventors
Key dates
| Filing date | Sep 16, 1985 |
| Grant date | Apr 14, 1987 |
| Priority date | — |
| Expiry date | Sep 16, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D53/0828
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A flat bed vehicle has a king pin mounted in the flat bed for connection to a trailer to create a fifth wheel tractor-trailer combination. The king pin is vertically reciprocated above the flat bed and below the flat bed by a hand crank located at an outside edge of the flat bed. The king pin is held in its upward position by means of a horizontal bolt passing through a hole in the king pin. The bolt is manually removed from the king pin, for lowering the king pin, by a manual pull rod extending to the exterior of the vehicle bed, preferably adjacent to the hand crank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.