Trailer personnel lift with retractable axles
US7549667B2 · kind B2 · utility
12Cited by
6References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2005 |
| Grant date | Jun 23, 2009 |
| Priority date | — |
| Expiry date | Apr 5, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S180/906
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A trailer having retractable wheels. A lock-out mechanism is provided that prevents the trailer from being connected to a vehicle when the wheels are in the retracted position. The lock-out mechanism may also be configured to prevent movement of the wheels to the retracted position when the trailer is connected to a vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.