Protective helmet
US6154889A · kind A · utility
172Cited by
21References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1999 |
| Grant date | Dec 5, 2000 |
| Priority date | — |
| Expiry date | Feb 19, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA42B3/06
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A protective helmet made from a resilient shell. The shell has a plurality of slits. Each slit has a first end located at a lower edge of the shell and has an adjustable width effective for adjusting the size of the shell. The helmet also has an energy absorbing liner disposed inside the shell. The shell is very stiff to effectively distribute an impact force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.