Multi-function masks are presented including: a mask body forming a chamber, where the mask body includes an inner surface, an outer surface, an edge portion, a first intake portion, a second intake portion, a third intake portion, and an exhaust outlet portion, where the first intake portion passes filtered ambient air, where the second intake portion passes filtered and vaporized air, and where the third intake portion passes any of a fluid or a pressurized gas; a flexible contact portion positioned along the edge portion of the mask body for tightly contacting the mask body to a face when worn; and a filter unit positioned along the outer surface of the mask body for providing filtered ambient air to the first and second intake portions and for filtering exhaust air from the exhaust outlet portion.

A method for determining geometry of a face mask comprising a main body and a seal configured to engage a nasal region, cheeks and a chin of a user. The method comprises collecting (402) facial data of the user comprising a point cloud comprising a plurality of points on a skin surface in a nasal region, eye region and chin region of the user; determining (406), based on the facial data, in at least one of the eye region and the chin region of the user, an estimated face size of the user; determining (408), based on the facial data comprising the plurality of points in the nasal region, a best-fit Gaussian curve to a profile of a nose of the user; and using the estimated face size of the user and the determined Gaussian curve to select (410) parameters for a profile geometry of the face mask.

A face mask apparatus with N95 filter capability is formed with a breathing chamber that provides adjustable warm and humidified air for inhalation. The breathing chamber heats cold air that is breathed in through the face mask during normal breathing, which is worn over the nose and mouth of a person. A temperature gauge monitors temperature for future adjustment of the amount of heat generating current. The air in the chamber is heated for inhalation by a heating pad. The temperature of the Heating Pad and by extension the warm air generated), is regulated/adjusted by increasing or decreasing the current output settings on a controller connected to the power source. Warm and humidified air is produced. The air intake front end includes one or more slots to accommodate N95 filters, dust and pollutant capturing filters, or exercise air flow barriers therein.

A reusable face mask with a foam face seal to protect against transmission of airborne pathogens. The face mask uses an easily interchangeable, readily available, non-proprietary, standard filter. It has a section specifically designed to mitigate the fogging of glasses, and has a user-interchangeable strap/harness system.

An air-filtering face mask designed to provide effective respiratory protection is described that combines comfort, versatility, and reliable protection. The face mask includes a mask body having one or more layers, allowing the wearer to breathe comfortably while using the mask. The mask body is reversible, providing the option for use on both sides, also the mask body is constructed with air holes, facilitating efficient airflow and effective filtration of harmful pollutants. Additionally, a pocket is attached to the mask body, enabling insertion and secure retention of at least one filtration unit for efficient air filtration. The mask is held in place on the wearer's face by a fastener that incorporates a pair of fastening elements, allowing the wearer to adjust the length of the fastener to achieve an optimal fit corresponding to their face size and shape.

A protective face mask e.g. for protection from airborne contaminants is provided, which comprises a mask body configured to cover a portion of a wearer's face; securing means configured to secure the protective face mask to the head of the wearer; and an intake unit configured to draw air into the space between the inner side of the mask body of the protective face mask and the wearer's face to maintain a positive air pressure in the space.

Provided is a filtering facepiece respirator. The respirator includes a mask body having an anterior side portion, a posterior side portion, a middle portion, a first side portion, a second side portion, a top side portion, a bottom side portion and outer edge portions. The respirator further includes a primary port positioned at the anterior middle portion of the mask body and a detachable primary port adapter which is positioned over and engages the primary port. The respirator may further include an oxygen port and oxygen port adapter and a luer port and luer port adapter.

An earless filter mask includes an inner fabric layer, a first filter layer, a second filter layer, an outer fabric layer, an elastic material, and an exhalation valve. The inner fabric layer, the first filter layer, the second filter layer, and the outer fabric layer are stacked and aligned, the elastic material is folded over an edge of the layers, and sewn together along the edge. The elastic material conforms the mask to a shape of a wearer's face and a first tapered end of the mask is removably connected to a second tapered end of the mask by a closure device that sits at the nape of the wearer's neck.

Provided is a filtering facepiece respirator. The respirator includes a mask body having an anterior side portion, a posterior side portion, a middle portion, a first side portion, a second side portion, a top side portion, a bottom side portion and outer edge portions. The respirator further includes a primary port positioned at the anterior middle portion of the mask body and a detachable primary port adapter which is positioned over and engages the primary port. The respirator may further include an oxygen port and oxygen port adapter and a luer port and luer port adapter.

The present invention provides a protective face mask with breathing holes and having a removable and replaceable rear inner filter on the back of the face mask in order to provide a secure and safe mask and filter that provides additional resistance to penetration of pollutants, germs, and contaminants. The breathing holes make it easier for the user to breathe through the mask and filter. The rear filter has a continuous outer edge for being received in a continuous outer channel formed around the entire periphery of the rear face of the mask. Also, the entire edge of the inner filter is securely held in place in the continuous channel extending around the entire periphery of the face mask, with removable clips mounted on the filter, which have tabs for securely engaging gripping holes formed on each side of the continuous outer channel in the mask.