Sandwich panel
US7608318B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 17, 2003 |
| Grant date | Oct 27, 2009 |
| Priority date | — |
| Expiry date | Mar 20, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24702
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention can be defined in its most general form as a building unit, namely the sandwich panel with light core from corrugated sheet material in the form of zigzag crimp, and can be used in aircraft construction, as well as in shipbuilding and construction. Making use of the claimed invention will improve the weight efficiency, the strength and the manufacturability of the panel. The beneficial effect is attained due to the fact that the plane slanting ridges are connected along the protrusion and recess zigzag lines by means of curvilinear parts, whose radius is not less than the core material thickness, whereby along said parts is a line perforation enabling the adhesive material to get into the holes of the perforation in the course of core-skins assembling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.