Shock-absorbing system for protective equipment
US4023213A · kind A · utility
175Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 17, 1976 |
| Grant date | May 17, 1977 |
| Priority date | — |
| Expiry date | May 17, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S2/909
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A shock-absorbing system is provided for protective helmets such as football helmets or crash helmets which includes an impact-resistant shell, a plurality of webs secured to the inside of the shell in the crown portion, and a plurality of flexible plastic compartments containing foam secured to the webs, the compartments being interconnected by means of orifices of relatively small size and the interior of the compartments being at atmospheric pressure or slightly above.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.