Folding trailer with hydraulic lift system
US5505515A · kind A · utility
31Cited by
8References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 14, 1994 |
| Grant date | Apr 9, 1996 |
| Priority date | — |
| Expiry date | Feb 14, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60P3/341
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An improved folding trailer includes a base member supported by a pair of wheels with a top member movably connected to the base member. A plurality of extendable support units is mounted on the base member and can be hydraulically driven to extend the top member. The hydraulic system is connected to the extendable support units through pulleys and cables and includes a pressure-compensated flow control valve system for hydraulically limiting the retraction rate of these extendable support units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.