Mask with inhalation valve
US7013896B2 · kind B2 · utility
70Cited by
79References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 6, 2002 |
| Grant date | Mar 21, 2006 |
| Priority date | — |
| Expiry date | Jul 9, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M15/0086
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A mask for use in inhaling a substance includes a mask housing defining a chamber. The housing has an inlet and an outlet communicating with the chamber. A valve is disposed in the inlet and is integrally formed with the housing, such that the valve and the housing are formed as a one-piece unit. In a preferred embodiment, the housing further comprises an exhaust port and an exhalation valve disposed in the exhaust port, with a shield disposed around the exhaust port. In another aspect, a method of manufacturing a mask also is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.