Diving mask
US7328699B2 · kind B2 · utility
3Cited by
8References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2005 |
| Grant date | Feb 12, 2008 |
| Priority date | — |
| Expiry date | Apr 22, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63C11/12
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A diving mask includes a nose cover and a valve seat of a drainage mechanism having a check valve formed in the vicinity of the nose cover. The nose cover and the value seat are formed from an elastic material which is integral with a soft elastic material forming the nose cover. In the vicinity of the valve seat, an annular member formed from a plastic material plastics having a hardness and deformation-resistance both higher than those of the elastic material forming the valve seat is embedded in a bottom of the nose cover so as to extend along the valve seat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.