Respirator mask
US7243652B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 23, 2004 |
| Grant date | Jul 17, 2007 |
| Priority date | — |
| Expiry date | Aug 2, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M16/06
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A respirator mask includes an inflatable cuff, a gas-guiding member, and an inflating valve. The inflatable cuff has an inner wall surface confining an air chamber, and a gas inlet unit having a hollow protrusion projecting into the air chamber from the inner wall surface. The hollow protrusion has an innermost end wall spaced apart from the inner wall surface and a through hole formed in the innermost end wall. The hollow protrusion is formed as one-piece with the inner wall surface. The gas-guiding member has an annular connecting edge portion which is connected to the inflatable cuff and which has a hollow seat aligned with the hollow protrusion. The hollow seat has a through hole communicated with the through hole of the hollow protrusion. The inflating valve is mounted in the hollow seat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.