Protective equipment for the pilot of a military aircraft, and a method of personalizing the equipment
US5722091A · kind A · utility
23Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1996 |
| Grant date | Mar 3, 1998 |
| Priority date | — |
| Expiry date | Jul 2, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/013
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The equipment for military aircraft pilots comprises a helmet (10) having a shell and a visor (18) for placing in front of the eyes. A central portion of the visor is of a shape such that at each point its minimum radius of curvature is substantially in a vertical plane and its maximum radius of curvature is in a plane substantially orthogonal to the preceding plane. The radius of curvature of the visor in the horizontal plane lies in the range 110 mm to 145 mm and its radius of curvature in a vertical plane parallel to the midplane of the helmet varies from about 135 mm in the center to about 75 mm in lateral zones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.