Reusable filtering face mask
| DWPI Title: Protective face mask for use in medical community for personal protective device, for use in medical community, has filter covers including cover rib pattern standing proud of cover inner face, where received filter medium is urged onto tray rib pattern |
| Abstract: A reusable, protective face mask has two detachable filter trays that attach on each side of the mask, a soft elastomeric face seal, and straps to go around the user's head. Exhalations and inhalations can pass through the same filter material. The filter trays can accept arbitrary filter media. A forward-facing port can be used to increase speech intelligibility by transmitting sound through a diaphragm without a prohibitive amount of distortion. Manufacture of the mask is facilitated because the mask body and the other mask components can be produced by injection molding. Decontamination and sterilization are facilitated because the mask can be fully disassembled. |
| Use: Protective face mask such as N95 mask for protection against pathogens during COVID-19 pandemic. |
| Advantage: The mask is reusable and fully capable of decontamination and/or sterilization. It is readily manufacturable, inexpensive, and convenient to use. |
| Novelty: The face mask has a port twist-locking fixture that is engaged with a tray twist-locking feature followed by relative rotation between said engaged features urges a filter tray (130) toward a mask portion (100) and thereby compresses a filter gasket ring (200). Each filter cover (140) is pierced through with one or more vent holes for passage of air between the atmosphere and the upper air space within the corresponding filter tray. Each filter port (190) is conformed with an opening for passage of air between the lower air space of the filter tray and the interior portion of the mask portion. The mask portion, the filter trays, the filter covers, and the filter ports are each a discrete portion of the protective mask. The protective mask is capable of repeated assembly from the discrete portions and disassembly into the discrete portions. |
| Filed: 11/15/2021 |
| Application Number: US17526688A |
| Tech ID: SD 15584.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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