Height adjustable loading ramp
US9776547B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 2012 |
| Grant date | Oct 3, 2017 |
| Priority date | — |
| Expiry date | Oct 31, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04F2011/007
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A height adjustable loading ramp installed at a tail of a car, for loading or unloading goods, includes: a slope plane and a supporter. The two ends of the slope plane are respectively supported on the ground and the supporter. The supporter includes: two supporting legs adjustable in length, a beam horizontally provided between lower portions of the two supporting legs, wheels for making the loading ramp move conveniently, and a scissor jack for adjusting the height. The scissor jack includes: four scissor jack arms equal in length, and an adjusting-locking device for adjusting and locking the height of the height adjustable loading ramp. In addition, the supporting leg comprises an auxiliary fixing unit for fixing the relative position between the upper and the lower supporting legs and providing an extra security protection, in such a manner that the height of the height adjustable loading ramp is locked.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.