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US 2009/0151728 A1Published application
Respiratory Protection Device
OwnerAlison Kay McConnell, Johannes Alexander Paulus Paul +1inventors
InventorsAlison Kay McConnell, Johannes Alexander Paulus Paul, Owen James Warren Evans
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Abstract
A respiratory protection device comprises a housing (1) defining a chamber within the housing. The chamber is open in a region which in use is adapted to be nearest to a user. A porous element (3) is located within the chamber and a communicating member (5) communicates with the porous element (3) within the chamber.
Claims29
A respiratory protection device comprising:
- a housing (1) defining a chamber within the housing, the chamber being open in a region which in use is adapted to be nearest to a user;
- a porous element (3) within the chamber the porous element being dimensioned to correspond to the shape of the chamber within the housing (1):
- and a communicating member (5) provided with a tubular element (35) provided with a portion (45) having gaps (47) through an annular wall (37) adapted to communicate with the porous element within the chamber, the portion (45) being positioned between curved edges (31) of the porous element (3), and the annular wall (37) applying pressure on the porous element (3) such that the curved edges (31) are urged towards the gaps (47) of the communicating member (5) so as to seal the porous element (3) to the portion (45) of the communicating member and to retain the curved edges (31) of the porous element (3) within the housing (1).
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Dependencies are inferred from the claim text.