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US 2011/0209710 A1Published application
Filtered bandanas
OwnerCarlos J. SPENCER, IIIinventor
Life of this patent
Estimating the term…
Abstract
A breathing mask includes a sheet of flexible material folded on itself, resulting in a first layer and a second layer, a filter located between the first layer and the second layer, and a nose bridge located along an edge of the folded sheet, the nose bridge configured to form a seal between the folded sheet and a user's nose when the mask is placed on a user's face.
Claims20
A breathing mask comprising:
- a sheet of flexible material folded on itself, resulting in a first layer and a second layer;
- a filter located between the first layer and the second layer;
- and
- a nose bridge located along an edge of the folded sheet, the nose bridge configured to form a seal between the folded sheet and a user's nose when the mask is placed on a user's face.
1 more element
A breathing mask comprising:
- a sheet of fabric folded on itself, resulting in a first layer and a second layer;
- a filter located between the first layer and the second layer;
- and
- a nose bridge located along an edge of the folded sheet, the nose bridge configured to form a seal between the folded sheet and a user's nose when the mask is placed on a user's face.
1 more element
A breathing mask comprising:
- a sheet of fabric folded on itself, resulting in a first layer and a second layer;
- a filter sandwiched between the first layer and the second layer;
- and
- a nose bridge located along an edge of the folded sheet, the nose bridge configured to form a seal between the folded sheet and a user's nose when the breathing mask is placed on a user's face.
1 more element
Dependencies are inferred from the claim text.