Multilayer densified surface to improve air flow resistance and structural properties
US7357974B2 · kind B2 · utility
12Cited by
11References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 3, 2005 |
| Grant date | Apr 15, 2008 |
| Priority date | — |
| Expiry date | Mar 7, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249933
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A thermoplastic blanket includes multiple layers of thermoplastic material. The first such layer has a first surface zone, a second, optional surface zone and a first base zone between the first and second surface zones. The second layer of thermoplastic material includes a third surface zone, a fourth optional surface zone and a second base zone between the third and fourth surface zones. At least one surface zone of each layer is densified to a density of between about 1.5 to about 30.0 pcf while each base zone has a density of between about 0.5 to about 10.0 pcf.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.