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US 2009/0014005 A1Published application
Air filter device
OwnerStuart MacKinnoninventor
Life of this patent
Estimating the term…
Abstract
An air filtration device for a helmet protective face mask comprising, a filtration shield, adapted to receive at least one filter and means for securely engaging the filtration shield to the helmet protective face mask, wherein the filtration shield comprises a shape for fitting substantially snugly within an inside surface of the helmet protective face mask.
Claims10
An air filtration device for a helmet protective face mask comprising:
- a. a filtration shield, adapted to receive at least one filter;
- b. means for securely engaging the filtration shield to the helmet protective face mask.
An air filtration device comprising:
- a. a filtration shield shaped to fit substantially snugly over a user's mouth and nose, the filtration shield comprising a perforated housing for temporarily positioning at least one filter there within;
- b. straps for temporarily and securely engaging the filtration shield to the user's head.
Dependencies are inferred from the claim text.