Collapsible trailer/ramp assembly
US4995129A · kind A · utility
Inventor
Key dates
| Filing date | Jan 30, 1989 |
| Grant date | Feb 26, 1991 |
| Priority date | — |
| Expiry date | Jan 30, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D63/061
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A collapsible trailer/ramp assembly is provided which is formed by a pair of deck plates that are interconnected by a hinge along the longitudinal centerline of the deck. The downturned side and end edges of the plates and a plurality of longitudinal and transverse structural members provide the trailer or ramp structure with efficient structural integrity. These structural members also function to define a storage receptacle which is adapted to receive the drawbar structure, wheel assemblies, transverse structural bridge plates and locking pins of the trailer/ramp assembly. When the deck sections are folded the storage receptacle is completely closed to thereby prevent loss of any of the stored components of the trailer/ramp assembly. All of the component parts are assembled to the deck sections by means of manually insertible and removable pins so that tools and other equipment are not required for assembly and disassembly procedures. With the wheel assemblies and drawbar assemblies removed from the unfolded deck sections, the deck sections form a unique ramp that can be efficiently used for loading and unloading operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.