Composite cargo door/ramp
US7213860B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2004 |
| Grant date | May 8, 2007 |
| Priority date | — |
| Expiry date | Jan 16, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/546
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A cargo enclosure including a floor having a plurality of edges including a first edge, a second edge and a third edge. At least two sidewalls, including a first sidewall and a second sidewall, the first sidewall connected to the first edge of the floor, the second sidewall connected to the second edge of the floor. At least one hinge is connected along the third edge of the floor, the at least one hinge being rotatable about an axis. A composite door is connected to the at least one hinge, the door having a closed position and the hinge having a plurality of torsion springs rotatable about the axis, the plurality of torsion springs biasing the composite door toward the closed position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.