Face mask with offset folding for improved fluid resistance
US7725948B2 · kind B2 · utility
14Cited by
54References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 22, 2004 |
| Grant date | Jun 1, 2010 |
| Priority date | — |
| Expiry date | Dec 15, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B23/025
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A face mask for improved fluid resistance is provided. The face mask may include a body portion with a first layer and a second layer. The first and second layers may have a plurality of folds that form a plurality of first creases in the first layer and a plurality of second creases in the second layer. The body portion may have an outer facing surface and an inner facing surface opposite from the outer facing surface. At least one of the first creases may be misaligned with at least one of the second creases in order to provide improved fluid resistance of the body portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.