Face mask
US4641379A · kind A · utility
76Cited by
6References
3Claims
0Family size
Inventor
Key dates
| Filing date | Apr 25, 1986 |
| Grant date | Feb 10, 1987 |
| Priority date | — |
| Expiry date | Apr 25, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S2/909
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A flexible body portion covering substantially all of the face below the eyes of a wearer has nose and mouth openings. A flexible skirt affixed to the outer surface of the body portion along a seam which encompasses the nose and mouth openings and also at the tack points forms an air duct which directs expelled air and downwardly. In-turned flaps at the nose opening provide a seal around the wearer's nose. A stiff yet malleable arch affixed to the outer surface of the skirt prevent the mask from resting upon or rubbing against the wearer's nose. Broad lateral cheek rises provide vertical support.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.