Fifth wheels for truck tractors
US4029335A · kind A · utility
35Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1976 |
| Grant date | Jun 14, 1977 |
| Priority date | — |
| Expiry date | Mar 31, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D53/08
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A truck tractor has the fifth wheel mounted on a sub-frame which is pivotally connected between the tractor chassis and the rear axle of the tractor in order to improve the ride and handling of the tractor both when the truck is laden and unladen. Suspension elements are connected between the rear axle and the chassis frame. In one embodiment of the device the suspension elements comprise rubber blocks, and in another embodiment of the device, the suspension elements comprise leaf springs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.