Formed core sandwich structure and method and system for making same
US7753254B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 25, 2008 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Jul 25, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24669
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for producing a sandwich structure that is lightweight and many times stiffer than regular sheet metal, and which is easily formable into curved structures as well as structures having compound curves. In one embodiment, a formed core includes a plurality of cells comprising alternating front and rear projections extending outwardly in front of and behind a median plane, with each projection having a bonding surface area or land configured to be bonded with corresponding external sheets on both sides of the formed core. A plurality of micro-abrasions or indentations are formed on the bonding lands, allowing stronger bonding joints to be formed between the core and the external sheets by facilitating improved capillary action by the core during the bonding process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.