Multi-layer, personnel-protective helmet shell with spray-fabricated inner and outer structural layers
US6671889B2 · kind B2 · utility
19Cited by
26References
8Claims
0Family size
Inventors
Key dates
| Filing date | May 12, 2003 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | May 12, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/4821
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A multilayer helmet shell wherein inner and outer, structural, load-bearing semi-rigid layers, each formed from an affinity-bonded agglomeration of mechanically interactive, spray-deposited particles, jacket a viscoelastic, acceleration-rate-sensitive, microcellular foam core layer. The mechanical interfaces between the inner and outer jacketing, and the intermediate core, materials take the form of regions of inter-material suffusement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.