Respiratory mask
US8069855B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 22, 2008 |
| Grant date | Dec 6, 2011 |
| Priority date | — |
| Expiry date | Oct 6, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M16/0816
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A respiratory mask includes: a rigid mask frame having a ring portion, a loop portion spaced apart from the ring portion, and rib portions interconnecting the ring portion and the loop portion, the rigid mask frame defining a frame space; and a single piece of a flexible mask body having a flat central portion, a surrounding portion extending outwardly and curvedly from the flat central portion, and a peripheral end portion flaring from the surrounding portion. The flat central portion is formed with an annular flange sleeved on the ring portion. The peripheral end portion is disposed outwardly of the frame space. The surrounding portion extends into the frame space and is restrained by the rib portions and the loop portion of the mask frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.