Trailer hitch apparatus
US5887884A · kind A · utility
9Cited by
9References
13Claims
0Family size
Inventor
Key dates
| Filing date | Jan 29, 1997 |
| Grant date | Mar 30, 1999 |
| Priority date | — |
| Expiry date | Jan 29, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60D1/322
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A trailer hitch assembly having a connecting arm disposed within a sleeve and pivotally coupled within the sleeve by a bolt. A tongue at the distal end of the arm rests on one or more air cushions which provide damping or shock absorption to the coupled arm and sleeve during travel. The air cushions are mounted between the tongue and a cross brace of a trailer frame assembly. A hitch coupling is included at a distal end of the arm for engaging a hitch on a towing vehicle. Inflation or deflation of the air cushions allows adjustment of the amount of shock absorption according to the trailer load or road surface conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.