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US 2008/0289632 A1Published application
Filter for a breathing device
AssigneeDräger Safety AG & Co. KGaA
InventorsSandra DANKERT, Michael ROSERT, Dirk FEIL
Life of this patent
Estimating the term…
Abstract
A filter for a breathing device is flexible and can be manufactured in a simple manner. The filter includes a flexible frame (5) with a filter port (8) and with an end piece (9). The flexible frame (5) is provided between two filter mats (2, 3). The flexible frame (5) can be folded over along a bent edge (7) such that the filter port (8) and the second end piece (9) are arranged opposite each other.
Claims12
A filter for a breathing device, the filter comprising:
- a front filter mat;
- a rear filter mat, said front filter mat and said rear filter mat having essentially equal surface areas and being joined together along a circumference at a sealing edge;
- a flexible frame between said front filter mat and said rear filter mat, said flexible frame defining an interior space, said flexible frame having a first end piece with a filter port, through which said interior space is accessible, and having a second end piece at an opposite end of said frame, said frame comprising a one-piece frame structure that can be folded over about a bent edge such that said first end piece and said second end piece are arranged opposite each other in such a manner that said first end piece and said second end piece keep said filter mats apart.
A filter for a breathing device, the filter comprising:
- a flexible frame having a first end piece with a filter port and having a second end piece at an opposite end of said frame, said frame comprising a one-piece frame structure that is folded over about a bent edge such that said first end piece and said second end piece are arranged opposite each other and said flexible frame defines an interior space, said filter port providing a passage through which said interior space is accessible;
- a front filter mat;
- and
- a rear filter mat, said front filter mat and said rear filter mat having essentially equal surface areas and being joined together along a circumference at a sealing edge, said folded flexible frame being positioned between said front filter mat and said rear filter mat in such a manner that said first end piece and said second end piece keep said filter mats apart.
1 more element
Dependencies are inferred from the claim text.