초록 ▼

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

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.

대표청구항 ▼

1. 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

1. 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 flexible frame, said flexible 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. 2. A filter in accordance with claim 1, further comprising a compression spring for maintaining said first end piece and said second end piece at spaced locations from each other, said compression spring being provided between said first end piece and said second end piece. 3. A filter in accordance with claim 1, wherein a connection area is located in said interior space between said first end piece and said second end piece, said connection area comprising a sealing surface. 4. A filter in accordance with claim 1, wherein said second end piece has a circular design with a centrally arranged first opening. 5. A filter in accordance with claim 1, wherein said front filter mat comprises a printable cover mat and an activated carbon absorbent located under said printable cover mat. 6. A filter in accordance with claim 1, wherein said rear filter mat comprises a printable cover mat and an activated carbon absorbent located under said printable cover mat. 7. 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 flexible frame, said flexible 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; anda 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. 8. A filter in accordance with claim 7, further comprising a compression spring for maintaining said first end piece and said second end piece at spaced locations from each other, said compression spring being provided between said first end piece and said second end piece. 9. A filter in accordance with claim 7, wherein a connection area is located in said interior space between said first end piece and said second end piece, said connection area comprising a sealing surface. 10. A filter in accordance with claim 7, wherein said second end piece has a circular design with a centrally arranged first opening. 11. A filter in accordance with claim 7, wherein said front filter mat comprises a printable cover mat and an activated carbon absorbent located under said printable cover mat. 12. A filter in accordance with claim 7, wherein said rear filter mat comprises a printable cover mat and an activated carbon absorbent located under said printable cover mat. 13. A filter for a breathing device, the filter comprising: a front filter mat comprising filter material;a rear filter mat comprising filter material, said front filter mat having a front filter mat surface area with a peripheral edge and said rear filter mat having a rear filter mat surface area with a peripheral edge, said front filter mat peripheral edge being joined to said rear filter mat peripheral edge to form a sealing edge, said front filter mat joined to said rear filter mat defining a gas filtration path with gas passing through said front filter mat surface area being filtered by said filter material of said front filter mat and gas passing through said rear filter mat surface area being filtered by said filter material of said rear filter mat;a flexible frame between said front filter mat and said rear filter mat, said flexible frame maintaining said front filter mat surface area apart from said rear surface mat surface area and defining an interior space between said front filter mat and said rear filter mat, said flexible frame having a first end piece with a filter port providing anon-filtered gas path to said interior space, and having a second end piece at an opposite end of said flexible frame, said flexible 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. 14. A filter in accordance with claim 13, further comprising a compression spring for maintaining said first end piece and said second end piece at spaced locations from each other, said compression spring being provided between said first end piece and said second end piece. 15. A filter in accordance with claim 13, wherein a connection area is located in said interior space between said first end piece and said second end piece, said connection area comprising a sealing surface. 16. A filter in accordance with claim 13, wherein said second end piece has a circular design with a centrally arranged first opening. 17. A filter in accordance with claim 13, wherein said front filter mat comprises a printable cover mat and an activated carbon absorbent located under said printable cover mat. 18. A filter in accordance with claim 13, wherein said rear filter mat comprises a printable cover mat and an activated carbon absorbent located under said printable cover mat.