The present invention is a compact and portable personal ultraviolet air irradiation system having an ultraviolet air irradiation unit, a breathing tube, and a face mask. Unfiltered air passes through the ultraviolet air irradiation unit and is purified to ensure biological material has been neutralized by utilizing UV LEDs in the germicidal wavelengths of 100-280 nm. The ultraviolet air irradiation unit may further purify air of air particulates, gases, vapors, and biological material by utilizing a HEPA filter. The ultraviolet air irradiation unit may provide variable pressure to the mask to meet the breathing demands of the user. Flow through the ultraviolet irradiation unit may be reversible to irradiate the exhalations of a user who may be infected with a virus or other disease spread through exhalations.

A one-piece, machined manifold for connecting air supply cylinders with a first stage regulator and recharge port has at least one bottle port configured to removably receive a bottle of pressurized air, a first stage regulator chamber, a quick disconnect fitting port, an air channel in fluid communication with the at least one bottle port and the first stage regulator chamber, and an outlet channel in fluid communication with the first stage regulator chamber.

A one-piece, machined manifold for connecting air supply cylinders with a first stage regulator and recharge port has at least one bottle port configured to removably receive a bottle of pressurized air, a first stage regulator chamber, a quick disconnect fitting port, an air channel in fluid communication with the at least one bottle port and the first stage regulator chamber, and an outlet channel in fluid communication with the first stage regulator chamber.

A self-contained breathing apparatus includes an air cylinder pressurized to about 5500 psig, wherein the air cylinder is compatible with infrastructure used in conjunction with the air cylinder. The self-contained breathing apparatus also includes a first regulator valve for reducing air pressure from the air cylinder to a predetermined level. A second regulator valve is also provided for reducing the air pressure from the predetermined level to a level suitable for use by an operator, wherein air is supplied from the second regulator valve to the operator via a mask. The self-contained breathing apparatus further includes a frame for supporting the air cylinder on the back of the operator. Other embodiments are described and claimed.

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.

There is provided a mask clip assembly for use with a face mask. The assembly includes a housing having inner and outer housing shells. The housing has open and closed positions. In the closed position the inner and outer housing shells are engaged with each other and form a cavity between the inner and outer housing shells. In the open position the inner and outer housing shells are separated and disposed away from each other in comparison to the closed position, the housing being sized and configured to engage the face mask with a portion of a mask periphery disposed in the cavity with the housing in the closed position. The assembly includes an air filter and intake and exhaust ports. The assembly includes an intake tube attached to the housing and in fluid communication between the housing and the intake port. The intake tube is positionable adjacent an inner face mask side with the housing in the closed position with a portion of the mask periphery disposed in the cavity. The assembly includes a one-way valve that is configured to prevent fluidic flow from the exhaust port through the housing to the intake tube. The assembly includes a fluidic path extending into the intake port through the intake tube, the air filter, the cavity and the one-way valve and out of the exhaust port with the housing in the closed position.

There is provided a mask clip assembly for use with a face mask. The assembly includes a housing having inner and outer housing shells. The housing has open and closed positions. In the closed position the inner and outer housing shells are engaged with each other and form a cavity between the inner and outer housing shells. In the open position the inner and outer housing shells are separated and disposed away from each other in comparison to the closed position, the housing being sized and configured to engage the face mask with a portion of a mask periphery disposed in the cavity with the housing in the closed position. The assembly includes an air filter and intake and exhaust ports. The assembly includes an intake tube attached to the housing and in fluid communication between the housing and the intake port. The intake tube is positionable adjacent an inner face mask side with the housing in the closed position with a portion of the mask periphery disposed in the cavity. The assembly includes a one-way valve that is configured to prevent fluidic flow from the exhaust port through the housing to the intake tube. The assembly includes a fluidic path extending into the intake port through the intake tube, the air filter, the cavity and the one-way valve and out of the exhaust port with the housing in the closed position.

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.