Provided herein are face masks, systems, and methods for using the face masks and systems. The face masks disclosed herein include a dome-shaped structure sized to cover a user's nose and mouth. The face masks include an inlet for passage of a tubing and a septum that divides the face mask into a nose chamber and a mouth chamber. The septum may include an opening or a gate. The gate may be configured to open downwards in response to exhalation from the nose of the user and to stay closed in absence of exhalation. The face mask may also include a filter located in the dome-shaped structure in an area adjacent to the mouth. The face mask may also include a filter located in the gate. The filter is configured to capture microscopic particles and nanoparticles. The systems provided herein may include a face mask as provided herein, an air pump comprising a filter, a tubing for delivering air from the air pump to the face mask. Alternatively, the face mask may be a nose mask that only covers the nose.

A breathing mask including a vent system for ventilating the mask, a detector for providing respiration data of a user and located for sensing at least one physical property of air inside the breathing mask when worn by a user and a controller configured to activate the vent system based on the respiration data. The controller may be configured to predict future respiration data based on historic respiration data of at least one earlier detected inhaling or exhaling cycle, determine whether a future inhaling or exhaling cycle will occur based on predicted future respiration data and activate the vent system before the determined future inhaling or exhaling cycle commences.

A breathing mask including a vent system for ventilating the mask, a detector for providing respiration data of a user and located for sensing at least one physical property of air inside the breathing mask when worn by a user and a controller configured to activate the vent system based on the respiration data. The controller may be configured to predict future respiration data based on historic respiration data of at least one earlier detected inhaling or exhaling cycle, determine whether a future inhaling or exhaling cycle will occur based on predicted future respiration data and activate the vent system before the determined future inhaling or exhaling cycle commences.

A diaphragm or non-return valve is disposed in a supporting wall and includes a diaphragm plug and a valve seat having a passage opening surrounded by a continuous surface for sealing adhesion contact of a sealing lip of the diaphragm plug. The diaphragm plug is made as one piece and is of the same elastic, flexible material as the supporting wall, from which the diaphragm plug is separated along its perimetric edge by slots having a predetermined length. The diaphragm plug and the supporting wall are connected by at least two material bridges provided on opposite sides of the perimetric edge of the diaphragm plug, and the valve seat is configured as a shaped plate locked to the supporting wall in a position coincident with the diaphragm plug by a tightening ring, the valve seat and the tightening ring being engaged by elements passing through at least part of the slots.

A diaphragm or non-return valve is disposed in a supporting wall and includes a diaphragm plug and a valve seat having a passage opening surrounded by a continuous surface for sealing adhesion contact of a sealing lip of the diaphragm plug. The diaphragm plug is made as one piece and is of the same elastic, flexible material as the supporting wall, from which the diaphragm plug is separated along its perimetric edge by slots having a predetermined length. The diaphragm plug and the supporting wall are connected by at least two material bridges provided on opposite sides of the perimetric edge of the diaphragm plug, and the valve seat is configured as a shaped plate locked to the supporting wall in a position coincident with the diaphragm plug by a tightening ring, the valve seat and the tightening ring being engaged by elements passing through at least part of the slots.

An air flow system for reducing pathogens in a breathable airstream in an environment has a device having an airstream intake for receiving a volume of untreated air located in a first position, an airstream outlet for expelling a volume of treated air, the airstream outlet located in a second position extending above the first position, a flow path extending between the airstream intake and the airstream outlet, at least one of a UV generator and a UV-C emitter optically coupled to the flow path, a power source operably connected to the one of the at least one of the UV generator and the UV emitter, and a pressure generator fluidly connected to the airstream intake, the pressure generator configured to impart a flow from the airstream intake to the airstream outlet, wherein the pressure generator can be at least one of a force of flow from in line pressurized source or provided by a fan within the housing, and wherein a portion of the flow path includes a UV-C highly reflective surface.

An air flow system for reducing pathogens in a breathable airstream in an environment has a device having an airstream intake for receiving a volume of untreated air located in a first position, an airstream outlet for expelling a volume of treated air, the airstream outlet located in a second position extending above the first position, a flow path extending between the airstream intake and the airstream outlet, at least one of a UV generator and a UV-C emitter optically coupled to the flow path, a power source operably connected to the one of the at least one of the UV generator and the UV emitter, and a pressure generator fluidly connected to the airstream intake, the pressure generator configured to impart a flow from the airstream intake to the airstream outlet, wherein the pressure generator can be at least one of a force of flow from in line pressurized source or provided by a fan within the housing, and wherein a portion of the flow path includes a UV-C highly reflective surface.

This disclosure relates to a mask, and in particular a mask configured as a respirator. The disclosed mask is relatively low cost and relatively easy to manufacture. Further, the disclosed mask is reusable and customizable.

This disclosure relates to a mask, and in particular a mask configured as a respirator. The disclosed mask is relatively low cost and relatively easy to manufacture. Further, the disclosed mask is reusable and customizable.

A full-face diving mask includes a mask and a breathing tube. The mask includes an outer frame, a lens housing and a fitting mask. The fitting mask includes a partition plate. The partition plate and the inner surface of the lens housing define an observation chamber on the top and a breathing chamber below. The partition plate includes at least one air intake port to allow inhaled air to be guided and circulated through at least one air intake passageway from the observation chamber toward the breathing chamber. The breathing chamber is further provided with an air compartment partition plate connected to the partition plate to define an air discharge compartment. The air compartment partition plate is provided with at least one air discharge port to allow exhaled air to be guided through at least one air discharge passageway from the air discharge compartment and discharged along the breathing tube.