Tow bar for a trailer
US5240273A · kind A · utility
15Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1992 |
| Grant date | Aug 31, 1993 |
| Priority date | — |
| Expiry date | Jan 28, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60D1/34
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A tow bar for a trailer comprises forward and rear sections which are pivotable relative to one another about a substantially horizontal axis, to reduce the stresses to which the tow bar is subjected when travelling across rough terrain. An axially compressible spring, such as a stack of Belleville springs mounted on a cylindrical shaft, extends between the two tow bar sections to absorb some of the stresses caused by pitching movement of the trailer relative to the towing vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.