A respiratory protection mask includes detachably connected main body and front cover. The main body includes a shielding member for shielding a wearer's mouth and nose, and has air outlet with air-outlet valve and air inlets with air-inlet valves. The mask is characterized in a guide structure and a limiting structure provided between the main body and the front cover. The guide structure includes corresponding slide rail and slide channel capable of guiding the front cover to move along a linear path parallel to a longitudinal section of the air outlet to assemble to the main body and cover the air-outlet valve. The limiting structure includes corresponding male and female fasteners that are detachably engaged with each other when the front cover is assembled to the main body, preventing the front cover from moving in an opposite direction on the linear path to separate from the main body.

A smart mask includes a face-covering, an attachment element, one or more power source(s), an air circulation system, an exhaust system, and a controller. The face-covering is configured to cover a face area of a wearer. The attachment element is configured to attach the face-covering onto the face area of the wearer. The air circulation system is powered by at least one of the one or more power source(s) and configured to filter outside air and draw the filtered outside air into the face area. The exhaust system is placed below the air circulation system and configured to purge exhaled air out of the face area. The controller is configured to control the air circulation system.

A smart mask includes a face-covering, an attachment element, one or more power source(s), an air circulation system, an exhaust system, and a controller. The face-covering is configured to cover a face area of a wearer. The attachment element is configured to attach the face-covering onto the face area of the wearer. The air circulation system is powered by at least one of the one or more power source(s) and configured to filter outside air and draw the filtered outside air into the face area. The exhaust system is placed below the air circulation system and configured to purge exhaled air out of the face area. The controller is configured to control the air circulation system.

A cartridge holder for a respirator, the cartridge holder including a fit-check device with a sealing platen that can be actuated between a first, unsealed position and a second, sealed position in which at least a portion of the sealing platen contacts a major surface of a disposable filter cartridge within the cartridge holder so as to prevent airflow through the disposable filter cartridge.

A cartridge holder for a respirator, the cartridge holder including a fit-check device with a sealing platen that can be actuated between a first, unsealed position and a second, sealed position in which at least a portion of the sealing platen contacts a major surface of a disposable filter cartridge within the cartridge holder so as to prevent airflow through the disposable filter cartridge.

A respiratory protection device that includes a valve assembly operable between an open configuration and a closed configuration. In some exemplary embodiments, the respiratory protection device includes an elastomeric seal, and a valve assembly and a breathing air source component that are in sealing engagement with the elastomeric seal when the valve assembly is in a closed configuration.

A respiratory protection device that includes a valve assembly operable between an open configuration and a closed configuration. In some exemplary embodiments, the respiratory protection device includes an elastomeric seal, and a valve assembly and a breathing air source component that are in sealing engagement with the elastomeric seal when the valve assembly is in a closed configuration.

An air filter including a filter support that supports porous, polymeric sorbent particles that comprise a divalent metal impregnated therein.

An air filter including a filter support that supports porous, polymeric sorbent particles that comprise a divalent metal impregnated therein.

The present invention relates to a protective face mask and filtration article, a method for using a protective face mask and filtration article, and a design for manufacturing. In particular, the invention relates to a self-contained, mobile, battery-powered bioactive and filtering breathing appliance that provides broad spectrum antimicrobial and allergic protection via an atomized biocidal agent steam/vapor and a torturous hydrophilic filtration article that sterilizes incoming air and captures debris. To this end, antimicrobial activity and filtration functions leverage a redundancy of means/methods comprised of antimicrobial hydrogen peroxide liquid/vapor/steam and an iodized salt containing hydrophilic filtration article. The present invention is a wearable apparatus that sterilizes incoming air by capturing, neutralizing and destroying airborne pathogens and other particulate matter and pumps sterilized oxygen/air for natural, unlabored breathing by the wearer. The present invention further relates to a production method thereof.