Trailer apparatus
US6382647B1 · kind B1 · utility
6Cited by
18References
11Claims
0Family size
Inventor
Key dates
| Filing date | May 12, 2000 |
| Grant date | May 7, 2002 |
| Priority date | — |
| Expiry date | May 12, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2300/38
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Trailer apparatus includes pneumatic shock absorber assemblies for absorbing road shocks as the trailer moves and for raising and lowering the trailer evenly. The trailer apparatus also includes king pin assemblies which may be moved relative to wheel spindles for enhanced steering while the trailer is being pulled and while the trailer is being backed up. Three embodiments of king pin assemblies and two embodiments of pneumatic shock absorber assemblies are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.