Breathing face mask
US4069516A · kind A · utility
188Cited by
3References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 21, 1976 |
| Grant date | Jan 24, 1978 |
| Priority date | — |
| Expiry date | Jul 21, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B18/08
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A resiliently flexible sealing element conformable to the face of a wearer is supported by and spaced from a mask body by a resiliently flexible web, the sealing element and web extending perimetrically around the open side of the mask body and the hinge web having a bead extending along the opposite sides and across the top of the mask for controlled buckling of the web in a manner mechanically loading the face engaging sealing element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.