BR112022026751B1 - PROTECTIVE MASK - Google Patents

Abstract

PROTECTIVE MASK. The present invention relates to a protective mask for deactivating harmful agents. In some examples, the mask includes a filter element that traps harmful agent particles. A sanitizing emitter permeates the filter element with a sanitizing agent to deactivate the harmful agent. In some examples, the sanitizing agent is an ultraviolet light configured to deactivate a virus like SARS-CoV-2.

Description

CROSS REFERENCE TO RELATED ORDERS

[0001] This application claims the benefit of priority under 35 U.S.C. § 119(e) of U.S. Provisional Patent Application No. 63/045,749, entitled "Protective Mask" filed on June 29, 2020; U.S. Provisional Patent Application No. 63/066,582, entitled "Protective Mask" filed on August 17, 2020; and U.S. Provisional Patent Application No. 63/177,321, titled "Protective Mask," filed April 20, 2021, and is related to U.S. Design Patent Application No. 29/739,808, titled "Protective Mask," filed in June 29, 2020, all of which are incorporated herein by reference in their entireties.

BACKGROUND

[0002] As the spread of viruses, bacteria and other contaminants becomes a cause of global concern, people have sought to limit the spread of such viruses and diseases through the use of face coverings. Face coverings can limit the passage of droplets such as saliva, sputum, mucus or other bodily excretions that may contain harmful agents such as viruses, bacteria, mold spores or the like. Some face coverings may limit the wearer's ability to inhale such droplets and/or limit the wearer's ability to exhale or excrete such droplets, thereby protecting others from infection by the wearer. Traditionally, face coverings may be made from a woven fabric, non-woven material, foam, or other material that can capture droplets when the wearer inhales or exhales. Such materials may not be effective at trapping small droplets and may allow harmful agents, especially viruses, to pass through. Additionally, traditional face coverings can be difficult to clean and can become permeated with harmful agents that cannot be readily removed or neutralized. These materials can also present a security risk as they are typically opaque, covering the user's face, so the user may not be readily identified.

SUMMARY

[0003] In one embodiment, a protective mask is disclosed. The mask includes a permeable membrane, including a nasal and mouth covering portion and a filter cartridge removably attached to the impermeable membrane. The filter cartridge may include a housing supporting a filter element operative to trap particles of a harmful agent, a sanitizing emitter surrounding an outer perimeter of the filter element and acting to permeate the filter element with a sanitizing agent operative to deactivate particles of the harmful agent, and a containment element that contains the sanitizing agent. In one embodiment, the containment element protects the user from exposure to the sanitizing agent.

[0004] Optionally, in some embodiments, the sanitizing agent source is electrically coupled to the sanitizing emitter.

[0005] Optionally, in some embodiments, the sanitizing emitter comprises a light source; the sanitizing agent comprises light; and the sanitizing agent source comprises a power supply.

[0006] Optionally, in some embodiments, the light source is a plurality of light-emitting diodes.

[0007] Optionally, in some embodiments, the light comprises light in an ultraviolet spectrum.

[0008] Optionally, in some embodiments, the light comprises a wavelength of about 220-280 nanometers.

[0009] Optionally, in some embodiments, the power supply is rechargeable.

[0010] Optionally, in some embodiments, the power supply comprises a battery disposed within the housing.

[0011] Optionally, in some embodiments, the filter cartridge is a first filter cartridge, the protective mask further comprising a second filter cartridge stacked in series with the first filter cartridge.

[0012] Optionally, in some embodiments, the first filter cartridge is configured to deactivate a first type of harmful agent, and the second filter cartridge is configured to deactivate a second type of harmful agent.

[0013] Optionally, in some embodiments, the filter element filters particles above approximately 50 microns in size.

[0014] Optionally, in some embodiments, the protective mask includes a transparent eye covering portion. The eye covering portion and the nasal and mouth covering portion are formed as a unit with the waterproof membrane.

[0015] Optionally, in some embodiments, the mask includes an attachment member configured to secure the impervious membrane to the user's face and a sealing element configured to seal the impervious membrane to the user's face when attached by the attachment member. The sealing member includes a first seal and a second seal disposed inwardly from an edge of the impermeable membrane relative to the first seal.

[0016] Optionally, in some embodiments, the containment element is a first containment element disposed transversely outwardly from the sanitizing emitter such that the first containment element surrounds an outer perimeter of the sanitizing emitter and contains the sanitizing agent in a transverse direction. In some embodiments, the protective mask includes a second containment element disposed longitudinally relative to the filter element containing the sanitizing agent in the longitudinal direction.

[0017] Optionally, in some embodiments, the sanitizing emitter is directly adjacent to the outer perimeter of the filter element.

[0018] Optionally, in some embodiments, the sanitizing emitter includes a plurality of emitting elements arranged uniformly from a center of the filter element.

[0019] Optionally, in some embodiments, the filter element has a circular cross-section.

[0020] Optionally, in some embodiments, the sanitizing mask includes a channel formed between the first seal and the second seal and an air mover disposed within the channel. The first and second seals and air mover form a closed-loop cooling area configured to cool a user's face while wearing the protective mask.

[0021] Optionally, in some embodiments, the containment element forms a tortuous path configured to allow the passage of air through the containment element and configured to block the passage of the sanitizing agent emitted by the sanitizing emitter through the containment element.

[0022] Optionally, in some embodiments, wherein the filter cartridge includes a reflective chamber configured to reflect the sanitizing agent.

[0023] In one embodiment, a protective mask includes a transparent impermeable membrane including a nasal covering portion, a mouth covering portion and a chin covering portion. A user's face is visible through the transparent waterproof membrane while the user is wearing the protective mask. A filter cartridge is removably attached to the transparent waterproof membrane on the chin cover portion, including a housing that supports a filter element operative to trap particles of a harmful agent, sanitizing emitter surrounding an outer perimeter of the filter element, and acting to permeate the filter element with a sanitizing agent operative to deactivate harmful agent particles, and a containment element that protects the user from exposure to the sanitizing agent.

[0024] In one embodiment, a face mask includes a lens; a structure attached to the lens that extends around a perimeter of the lens; and a filter cartridge attached to the structure. The filter cartridge filters a stream of air entering and leaving the face mask.

[0025] Optionally, in some embodiments, the lens is configured to cover a nose, eyes and mouth of a user of the face mask.

[0026] Optionally, in some embodiments, a seal is coupled to the structure and extends around the perimeter of the lens.

[0027] Optionally, in some embodiments, the filter cartridge is configured to be manipulated to replace a filter positioned therein.

[0028] Optionally, in some embodiments, the filter cartridge is removable from the structure.

[0029] Optionally, in some embodiments, the filter cartridge is positioned on a lower edge of the structure.

[0030] Optionally, in some embodiments, the lens comprises an anti-fog treatment that resists fogging of the lens during use.

[0031] Optionally, in some embodiments, the structure and seal are formed from transparent or substantially transparent materials.

[0032] In one embodiment, a protective mask includes a structure including a first structure portion and a second structure portion coupled to each other at a hinge. The structure extends around a perimeter of a face of a user wearing the protective mask. The protective mask includes a transparent waterproof membrane coupled to the frame and including a first portion where the user's face is visible through the transparent waterproof membrane while the user is wearing the protective mask. The mask includes a cartridge container that includes a containment member coupled to the frame. A filter cartridge is removable and attachable to the cartridge receptacle and includes housing supporting a filter element operative to retain a noxious agent, and a sanitizing emitter acting to permeate the filter element with a sanitizing agent operative to disable the harmful agent, where the containment element protects the user from exposure to the sanitizing agent.

[0033] Optionally, in some embodiments, the protective mask includes a battery compartment coupled to the first portion of the structure and operable to receive at least one battery, at least one battery in electrical communication with the sanitizing emitter and operable to provide power. electricity to the sanitizing emitter.

[0034] Optionally, in some embodiments, the sanitizing emitter comprises: a circuit board operative to distribute electrical energy from the at least one battery to at least one emitting element such that the at least one emitting element emits the agent sanitizing.

[0035] Optionally, in some embodiments, the circuit board comprises a flexible circuit board that bends to conform to the shape of the housing.

[0036] Optionally, in some embodiments, the protective mask includes a first joint including a plurality of openings formed in a body thereof. The first joint is received at the housing, and the sanitizing emitter is disposed on the first joint.

[0037] Optionally, in some embodiments, the plurality of openings forms a plurality of ribs operative to support the sanitizing emitter.

[0038] Optionally, in some embodiments, the protective mask includes a second gasket including at least one opening formed in a body thereof. The second hinge is received in the housing, and the filter element is disposed over the second hinge.

[0039] Optionally, in some embodiments, the first joint and the second joint seal at least one of the cartridge housing or receptacle in order to reduce or prevent a bypass of air or harmful agent around the sanitizing emitter or the filter element.

[0040] Optionally, in some embodiments, the protective mask includes a controller received in the cartridge receptacle. The controller is in electrical communication with at least one battery and the sanitizing emitter, and is operative to control the sanitizing emitter.

[0041] Optionally, in some embodiments, the controller includes at least one operating indicator to indicate a status of the protective mask.

[0042] Optionally, in some embodiments, the controller includes an operable power actuator to control power supplied from at least one battery to the sanitizing emitter.

[0043] Optionally, in some embodiments, the controller includes a reset actuator operable to restart an operation of the protective mask.

[0044] Optionally, in some embodiments, the protective mask includes a source of sanitizing agent electrically coupled to the sanitizing emitter.

BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 is an isometric view of an embodiment of a protective mask including a filter cartridge.

[0046] Figure 2A is a side view of the protective mask of Figure 1.

[0047] Figure 2B is a rear view of the protective mask of Figure 1.

[0048] Figure 2C is a partial cross-section of the protective mask of Figure 1 taken along section line 2C-2C of Figure 2B.

[0049] Figure 3 is an exploded view of the protective mask of Figure 1.

[0050] Figure 4 is a cross-section of the view of the protective mask of Figure 1, taken along section line 4-4 of Figure 1.

[0051] Figure 5 is a detailed view of the protective mask filter cartridge of Figure 1, installed in the protective mask.

[0052] Figure 6A is an isometric view of the waterproof membrane of the protective mask of Figure 1.

[0053] Figure 6B is a rear view of the waterproof membrane of the protective mask of Figure 1.

[0054] Figure 6C is a side view of the waterproof membrane of the protective mask of Figure 1.

[0055] Figure 7 is a detailed view of an embodiment of a filter cartridge suitable for use with the protective mask of Figure 1.

[0056] Figure 8A is an exploded view of the filter cartridge of Figure 7.

[0057] Figure 8B is an exploded view of an embodiment of a filter cartridge suitable for use with the protective mask of Figure 1.

[0058] Figure 9 is a cross section of the filter cartridge of Figure 8B.

[0059] Figure 10 is a side view of an example of a protective mask.

[0060] Figure 11 is a front elevation view of the protective mask of Figure 10 worn by a user.

[0061] Figure 12 is a cross section of a filter cartridge.

[0062] Figure 13A is a front isometric view of a protective mask.

[0063] Figure 13B is a rear isometric view of a mask.

[0064] Figure 14A is a front isometric view of a mask as worn by a user.

[0065] Figure 14B is a front elevation view of the mask of Figure 14A.

[0066] Figure 14C is a side elevation view of the mask of Figure 14A.

[0067] Figure 15 is an exploded view of the mask of Figure 13A.

[0068] Figure 16 is an exploded view of a filter cartridge.

[0069] Figure 17A is a front isometric view of a transparent mask.

[0070] Figure 17B is a rear isometric view of the mask of Figure 17A.

[0071] Figure 17C is a front view of the mask of Figure 17A.

[0072] Figure 17D is a rear view of the mask of Figure 17A.

[0073] Figure 17E is a side elevation of the mask of Figure 17A.

[0074] Figure 17F is a top plan view of the mask of Figure 17A.

[0075] Figure 17G is a bottom plan view of the mask of Figure 17A.

[0076] Figure 18A is a front isometric view of a transparent mask.

[0077] Figure 18B is a rear isometric view of the mask of Figure 18A.

[0078] Figure 18C is a front view of the mask of Figure 18A.

[0079] Figure 18D is a rear view of the mask of Figure 18A.

[0080] Figure 18E is a side elevation of the mask of Figure 18A.

[0081] Figure 18F is a top plan view of the mask of Figure 18A.

[0082] Figure 18G is a bottom plan view of the mask of Figure 18A.

[0083] Figure 19A is a front isometric view of a mask as worn by a user.

[0084] Figure 19B is a side elevation view of the mask of Figure 19A.

[0085] Figure 19C is a front elevation view of the mask of Figure 19A.

[0086] Figure 19D is a bottom plan view of the mask of Figure 19A.

[0087] Figure 19E is an exploded isometric view of the mask of Figure 19A.

[0088] Figure 19F is a partial view of the isometric details of a portion of the mask in Figure 19A.

DETAILED DESCRIPTION

[0089] The present disclosure concerns protective masks that help prevent contamination by harmful agents. As used herein, "harmful agent" refers to any agent that can cause harm to human health, such as dust, smoke, biological weapon, chemical agent, any biological material that can replicate and cause disease, such as viruses, bacteria, fungi, parasites, protozoa, prions or similar. In one embodiment, a protective mask is disclosed that includes an impermeable membrane that covers a portion of a user's face, e.g., a user's nose and mouth. In other embodiments, the waterproof membrane may also extend over a user's nose, mouth and eyes. In many embodiments, at least a portion of the waterproof membrane may be transparent or partially transparent so that the user can see through the waterproof membrane, and/or others can see a portion of the user's face through the waterproof membrane. The waterproof membrane may be selected to cover the minimum area of a user's face to prevent inhalation of a harmful agent, for example, tailored to cover a user's eyes, nose and mouth, but limited in size and shape for wearability and comfort of a user.

[0090] The protective mask may also include a filter cartridge. The filter cartridge includes an air permeable filter element that blocks the passage of harmful agents and suitable for inclusion in a filter cartridge. In some embodiments, the filter cartridge may be removable and/or replaceable. In these embodiments, a user may select a desired filter cartridge, such as one with specific filtration characteristics, depending on the usage environment.

[0091] In one example, the filter cartridge may be removable from the protective mask or may be pivotable or rotatable relative to it to allow access and replacement of the filter. For example, the mask may include a cartridge that moves or releases from a lower edge of a mask frame, which may allow the user to replace only the filter components and replace the cartridge, or may be completely releasable to allow the user replace the entire cartridge. Replaceable aspects of the filter allow the mask to maintain filtration efficiency and breathability, as well as adapt to different environments or harmful agents as needed.

[0092] The filter cartridge may also include a gasket or seal surrounding a perimeter thereof. For example, the filter may sit within an area defined by the cartridge and a gasket may extend around the perimeter of the cartridge, which acts to seal the cartridge to the mask frame or against a user's face, depending on placement of the cartridge. .

[0093] The filter cartridge includes a sanitizing emitter suitable for dispersing a sanitizing agent in the filter element. The sanitizing agent can deactivate harmful agents as they pass through the filter element, as well as those that are captured by the filter, cleaning the filter and helping to prevent the captured elements from affecting a user even if the elements pass through the filter. In many embodiments, the sanitizing emitter is a light emitter that emits light wavelengths like the sanitizing agent. For example, the sanitizing emitter may be a light-emitting diode ("LED") configured to emit wavelengths of light in an ultraviolet ("UV") portion of the electromagnetic spectrum. UV light can be effective in neutralizing harmful agents by damaging the harmful agent's active biological material, such as its deoxyribonucleic acid ("DNA"), or ribonucleic acid ("RNA").

[0094] An example of a harmful agent is the severe acute respiratory syndrome coronavirus 2 ("SARS-CoV-2") that causes the disease coronavirus 19 ("COVID-19"). SARS-CoV-2 is an RNA virus that can be deactivated by exposure to a sanitizing agent such as UV light. Drops of sputum, mucus or other bodily fluids, such as those expelled when an infected person coughs, can contain millions of SARS-CoV-2 particles. However, these droplets may be too small for any filter elements to be captured. For example, some droplets may be smaller than 200 microns in diameter. By infusing the filter element with a sanitizing agent such as UV light, virus particles in an infected droplet of sputum can be deactivated such that even if a protective mask wearer inhales an infected droplet that passes through the filter element, filter, the user may not become infected with SARS-CoV-2 and may not develop COVID-19.

[0095] In other examples, the protective mask may include a passive filter without active sanitizing aspects or features. In other words, the filter cartridge can be configured to filter the airflow as it travels through the mask through the characteristics of the filter material. In one example, the protective mask is also transparent to facilitate user communication, while maintaining a complete seal around the perimeter to prevent the entry of harmful agents. The filter cartridge may include a MERV 16 filter. The protective mask may also include anti-fog features within the lens, further ensuring visibility and transparency for the user. The protective mask can be secured via a strap, such as a strap positioned and secured via two attachment points (e.g., top and bottom locations on the protective mask) that helps distribute sealing pressure as well as anchor the mask on the crown of the user's head.

[0096] In various aspects, multiple, substantial or various components of the mask may be formed from transparent or substantially transparent materials. For example, an impermeable front membrane or lens may be transparent, as well as a structure, padding, seals, or the like, may be formed from a transparent or substantially transparent material. This could allow the mask to become "invisible" or at least less obvious to others in social interactions, allowing people to convey emotions and communicate without the hindrance or obstruction of a mask.

[0097] Figures 1, 2A, and 2B are views of an embodiment of a protective mask 100 including a filter cartridge, such as filter cartridge 300 or 500. Any filter cartridge disclosed herein may be interchangeable with any other filter cartridge. filter disclosed here. Therefore, any references to a particular filter cartridge should be understood as covering any other disclosed filter cartridge. For example, filter cartridges 300 and 500 may be interchangeable with each other and vice versa. The protective mask 100 includes an impermeable membrane 102. In this embodiment, the impermeable membrane 102, which may be considered a lens, includes an eye covering portion 112 (e.g., a portion of the membrane configured to be aligned or positioned over the eyes of a a user); a mouth and nose covering portion 114 (e.g., a membrane portion configured to be aligned or positioned over a user's mouth and/or nose); and a chin covering portion 113 (e.g., a portion of the membrane configured to be aligned or positioned over a user's chin, rather than a user's mouth). In some embodiments, the waterproof membrane 102 may include a mouth and nose covering portion 114 without an eye covering portion 112. The protective mask 100 includes one or more attachment members 104 for selectively securing the protective mask 100 to the head. of a user. The protective mask 100 may include a source of sanitizing agent 200, such as a sanitizing emitter.

[0098] The waterproof membrane 102 is shaped to minimally cover access points to the user's respiratory system and optionally the ocular system (e.g., the eyes). For example, the waterproof membrane 102 may be shaped to conform to a user's facial features. For example, the waterproof membrane 102 may have a rounded bottom section with a width corresponding to the width of the user's mouth. The waterproof membrane 102 may be tapered toward the bridge of the user's nose to form the mouth and nose cap portion 114. The impermeable membrane may expand outwardly to form the eye lid portion 112. The shape of the impermeable membrane may be functional. For example, the shape can protect the user's face without protruding excessively to avoid clogging items close to the user's face and also to maintain the user's comfort. The shape of the waterproof membrane 102 can also be selected for aesthetic elements. In one embodiment, the membrane 102 may have a circular bottom shape that glues inwardly to form a rectangular nose bridge, and then expands outwardly to form an ovoid or oval shape with a width that extends as long or a slightly longer than the spacing between the outer edges of the user's eyes.

[0099] With continued reference to Figures 1, 2A, 2B, and also Figures 6A-6C, the impermeable membrane 102 may have a respiratory opening 116. The respiratory opening 116 may be formed as an opening that provides an airway for an outer side 122 or surface of the waterproof membrane 102 to an inner side 124 or surface of the waterproof membrane 102. When a user wears the protective mask 100, an internal space 125 may be formed between the inner side 124 of the waterproof membrane 102 and the face of user. The respiratory opening 116 allows airflow, so that the user can breathe while wearing the protective mask 100. The respiratory opening 116 can define the single air path on the outside 124 of the waterproof membrane 102, so that all air that enters and leaves the mask 100 either through the opening 116. In this way, as the user breathes (for example, breathing, sneezing, coughing or similar), the expelled or inhaled air and other resulting fluids will be directed through the path defined by the opening respiratory opening 116. The inclusion of a single respiratory opening 116 can maximize the transparent area of the waterproof membrane 102 and improve visibility of the user and/or the visibility of the user's face to others. The respiratory opening 116 can be formed to the desired size and shape, but in some embodiments, it can be selected to match the shape of the filter cartridge 300 so that the cartridge can seat therein.

[00100] The respiratory opening 116 may be located in any suitable location on the impermeable membrane 102. As shown, the respiratory opening 116 may be positioned in a lower portion of the membrane between a transition point or below the nasal bridge. The respiratory opening 116 may be positioned in other suitable locations. For example, the respiratory opening 116 may be placed below the waterproof membrane 102, which may allow the filter cartridge 300 to be positioned further from the user's eyes and out of the user's line of sight. As an example, Figure 10 illustrates an example of a protective mask 100 including an impermeable membrane 103. In many respects, the impermeable membrane 103 is similar to the impermeable membrane 102. The impermeable membrane 103 may differ from the impermeable membrane 102 in the location of the respiratory opening 116 formed in the impermeable membrane 103. For example, the respiratory opening 116 may be positioned in a portion of the chin cover 113 of the impermeable membrane 103. The respiratory opening 116 may accept any suitable filter cartridge disclosed herein, such as the filter 300 or 500. As shown, for example, in Figure 11, placement of the respiratory opening 116 away from the user's face, such as on the chin cover portion 113, may be beneficial in improving the user's visibility to their surroundings, and/or improve the visibility of the user's face to others. For example, with the filter cartridge 300, 500 and the respiratory opening 116 in the portion 113 of the chin cover, deaf people may be more easily able to see the mouth of a mask wearer and read the wearer's lips as he or she speaks. .

[00101] In some embodiments, more than one respiratory opening 116 may be formed in the impermeable membrane 102. For example, a protective mask may include a first respiratory opening 116 in the impermeable membrane 102 with a one-way valve such that, when the user inhales, the air is directed through the first respiratory opening 116. The protective mask may include a second respiratory opening 116 with a one-way valve of opposite orientation, so that when the user exhales, the air is directed out of the second respiratory opening 116 and not the first respiratory opening 116. In other embodiments, a protective mask may include more than one respiratory opening 116, each of which may be equipped with a filter cartridge 300. The respiratory opening 116 may be associated with a fastening mechanism 120 suitable for attaching to a complementary attachment mechanism 312 of a filter cartridge 300.

[00102] The waterproof membrane 102 can be produced from any material suitable to adapt to the user's face that does not allow harmful agents to pass through it. In many embodiments, the impermeable membrane 102 can limit or prevent the passage of fluids or solid particles therethrough. Furthermore, the membrane 102 can be produced from a material that can be easily cleaned or sanitized without reducing its impermeability. For example, in some embodiments, the waterproof membrane 102 may be produced from plastic (either thermoset or thermoplastic). In many implementations, the waterproof membrane 102 may be produced from a transparent or partially transparent plastic such as polyethylene terephthalate ("PET"), polycarbonate (A.K.A. Lexan™), acrylic, polylactic acid, or the like. In such implementations, the transparent plastic may allow the user to see out through portion 112 of the eye cover when included. The transparent material can allow others to also see the user's face, which can be beneficial for safety reasons as well as emotional reasons (for example, doctors and nurses can better connect with patients when patients can see their face whole).

[00103] The sealing element 118 can be arranged around a perimeter of the waterproof membrane 102 so as to seal against the user's face, preventing air and harmful agents from penetrating around the edge of the waterproof membrane 102. The element seal 118 may include multiple seals, such as for redundancy, user comfort, better sealing, or the like. For example, as shown in Figures 2A-2C, a first seal 126 within the sealing member 118 may be disposed near an outer perimeter edge of the waterproof membrane 102 and a second seal 128 may be disposed inwardly from the relative first seal. to the perimeter edge of the waterproof membrane 102. A channel 130 may be formed between the first and second seals 118, 128. In some embodiments, the sealing member 118 may include two or more adjacent seals. In some embodiments, sealing member 118 may include two or more overlapping seals. In some embodiments, the sealing member 118 may be disposed along the interior of the impermeable membrane 102, such as between an eye covering portion 112 and a mouth and nose covering portion 114. The sealing member 118 may prevent or discourage a user from touching their eyes, such as in embodiments where the protective mask includes an eye covering portion 112. Likewise, the sealing element 118 may discourage the user from touching the nose and/or mouth. For example, the sealing member 118 may prevent or discourage a user from inserting a finger under the waterproof membrane 102 to touch their face. In this way, the protective mask 100 can prevent a user from introducing a harmful agent into his or her body through the eyes, nose or mouth.

[00104] In some implementations, an air mover 132, such as a fan, may be disposed within the channel 130, or in fluid communication with it. The air mover 132 may cause air to move within the channel to cool the skin positioned between the mask channels 100. The channel 130 and the air mover 132 may be fluidically isolated from the internal space 125 between the inner surface 124 of the mask and the face of a user while wearing the mask 100. The channel 130 and the air mover 132 may also be fluidically isolated from the atmosphere outside the mask 100. The channel 130, the seals 126, 128 and the air mover 132 may form a closed-loop cooling area operative to provide cooling to the face of a user wearing the mask while maintaining the mask's seal against harmful agents. For example, the seals 126, 128 may be sealed against the surface of the user's skin so that air from the pneumatic mover 132 cannot reach the skin beneath or adjacent (on an opposite side) the seals 126, 128. air mover 132 acts to stimulate a biological response from the user's skin. In other words, by cooling the skin between the seals 126, 128, the blood flowing to the skin positioned below the channel 130 between the seals 126, 128 will be cooled. As blood continues to flow to the area below the canal, it is cooled.

[00105] In this way, the air mover 132 can help reduce the user's perspiration while wearing the mask 100. The air mover 132 can be powered by the sanitizing agent source in implementations where the source 200 is an electrical power source. . In some implementations, the air mover 132 may have its own dedicated power source.

[00106] The sealing member 118 may be produced from any suitable material adapted to create a seal between a user's face and the waterproof membrane 102. In many embodiments, the sealing member 118 may be selected so as to deform sufficiently under pressure of the fastening member 104 pressing the waterproof membrane 102 onto the user's face to create a seal (e.g., the seal may deform the user's facial features) but still be comfortable for the user. In many embodiments, the sealing element 118 may be produced from a soft durable elastomer, such as natural rubber, latex, silicone, nitrile, or the like. In many embodiments, the sealing element 118 can deform elastically so that it can be used multiple times, or by different users. In some implementations, the sealing member 118 may plastically deform such that it conforms to a user's face and does not return to its original shape when removed.

[00107] The securing member 104 may be one or more devices suitable for holding the protective mask 100 to the user's face and forming a seal between the user's face and the sealing element 118. The securing member 104 may be attached to the waterproof membrane 102 so as not to create a hole in the waterproof membrane 102, and thus avoid compromising the seal created by the sealing member 118. For example, the fastening member 104 may be attached to an external surface of the waterproof membrane 102 by any method suitable, such as an adhesive, a fastener (e.g., button, clip, hook-and-loop fastener, or the like), soldering, brazing, or the like. Such an external fastening arrangement may prevent the fastening member 104 from compromising the impermeable membrane 102, for example, by forming a passage between the external side 122 and the internal side 124 that could allow harmful agents to reach the user's face, bypassing the filter cartridge.

[00108] In some embodiments, the attachment member 104 is a strap that fits around the user's head and compresses the waterproof membrane 102 on the user's face. The strap may be adjustable to fit user heads of different sizes and shapes, such as through the use of an elastic element, a strap, a hook, a clasp, buttons or the like. In some embodiments, more than one fastening member 104 may be used. For example, one attachment member 104 may be adapted to fit around a user's head, while a second attachment member 104 may be adapted to fit around a user's neck, as shown, for example, in Figures 2A. and 2B. As another example, a fastening member may extend around an upper portion of the user's head and a fastening member may extend around a lower portion of the user's head. In this way, the protective mask 100 can be adapted to users with a variety of head shapes and sizes.

[00109] Referring to Figures 1-5, the filter cartridge 300 may be seated within the respiratory opening 116 so that, as a user breathes, air and other fluids are drawn through the filter cartridge 300. In some In other embodiments, the filter cartridge 300 may be permanently attached to the respiratory opening 116. While in other embodiments, the filter cartridge 300 may be removably attached to the impermeable membrane 102. Such filter cartridges 300 may be replaceable, such as at the end of a prescribed period of use (e.g., a number of hours of use, a volume of air passed, or an expiration date). Filter cartridges 300 can be selectively attached to the waterproof membrane 102 depending on a specific threat or harmful agent. For example, a filter cartridge 300 may be adapted to filter and deactivate SARS-CoV-2, while another filter cartridge 300 may be adapted to filter and deactivate a chemical weapon such as a vesicant, such as mustard gas. A user may select an appropriate filter cartridge 300 based on the threat or expected usage environment. In some embodiments, multiple filter cartridges 300 may be stacked in series to deactivate multiple harmful agents. Such stacked filter cartridges 300 may include interfaces for passing a sanitizing agent from one filter cartridge 300 to another stacked filter cartridge 300. Such filter cartridges 300 may include indicators such as symbols or color codes to indicate the particular harmful agent that they are adapted to disable.

[00110] Returning to Figures 7-9, an example of a filter cartridge 300 is shown. The filter cartridge 300 includes a filter element 304, sanitizing emitter 306, one or more containment elements 302, a containment element 308, and a cartridge housing 310 that supports the other components of the cartridge. While in the example shown in Figures 7-9 the filter cartridge 300 is substantially cylindrical, other suitable shapes may be used, such as cubes, prisms, parallelepipeds, irregular shapes, and the like. The shape of the filter cartridge 300 can be selected based on the location and size of the respirator opening. The shape of the filter cartridge 300 may be selected to optimize the permeation of the sanitizing agent through the filter element 304. For example, a filter element 304 with a circular cross section may have the smallest perimeter for a given size. Thus, relatively fewer emitters can be positioned around the perimeter and permeate the filter element 304 with a sanitizing agent relative to a filter element with a non-circular cross section. For example, a filter element with a rectangular cross-section may have a larger perimeter than a similarly sized filter element with a circular cross-section. Likewise, a filter element 304 with a circular cross-section can simplify uniform permeation of the filter element 304 with the sanitizing agent. For example, in a filter element 304 with a circular cross section, the sanitizing emitter 306 or emitting elements 318 may be placed uniformly from the center of the filter element 304. In some examples, the sanitizing emitter 306 or emitting elements 318 may be approximately equidistant from the center of the filter element 304. Thus, the sanitizing emitter 306 may be able to more uniformly permeate the filter element 304 relative to an element with a non-circular cross section.

[00111] The cartridge housing 310 supports the other elements of the filter cartridge 300, and may include a fastening mechanism 312 for securing the cartridge housing 310 to the waterproof membrane 102, such as in a complementary fastening mechanism 120. A seal can be formed between the cartridge housing 310 and the waterproof membrane 102, which prevents the passage of harmful agents. In many embodiments, the seal may prevent the passage of fluids and/or solid particles. In some embodiments, the fastening mechanism 312 may be removably coupled to the waterproof membrane 102. For example, the fastening mechanism 312 may include threads that rotatably rotate with complementary helical threads of the fastening mechanism 120, e.g. , helical threads. In some implementations, one of the clamping mechanism 120 or the clamping mechanism 312 may include part of a bayonet bracket, such as fingers, and the other of the clamping mechanism 120 or the clamping mechanism 312 may include a complementary portion of a bayonet mount, as the sockets or grooves that fit the fingers. In other embodiments, the fastening mechanism 312 may be permanently coupled to the waterproof membrane 102. For example, the fastening mechanism 312 and the fastening mechanism 120 may be welded, adhered, welded, or otherwise joined. In some implementations, the clamping mechanism 312 or the clamping mechanism 120 may include a magnetic element adapted to releasably couple to the other of the clamping mechanism 312, or the clamping mechanism 120. In some implementations, a cartridge housing 310 may be formed unilaterally with the waterproof membrane 102, such as in a single continuous piece.

[00112] Filter element 304 can be any element suitable for allowing the passage of air, but still blocking or filtering the passage of particles, such as particles of harmful agents. The filter element 304 may trap particles of a harmful agent in the filter element 304, thereby preventing the spread of the particles to or from a wearer of the protective mask 100. Due to the density, the filter element 304 may increase the residence time of the particles of a harmful agent in the filter element 304, even if the particles eventually pass through. Thus, the filter element 304 can increase the time during which a harmful agent is exposed to a sanitizing agent, thereby increasing the effectiveness of the sanitizing agent in deactivating the harmful agent.

[00113] A filter element 304 can be adapted to filter a percentage of particles of a certain size. For example, various filter elements may be rated by the National Institute for Occupational Safety and Health ("NIOSH") for effectiveness in filtering particles of certain sizes. In one example, a filter element 304 may be rated "N95" meaning that the filter element 304 can filter at least 95% of airborne particles 0.3 microns or above. Likewise, an "N100" filter element can filter 99.97% of particles 0.3 microns or above. In other examples, a filter element 304 may be rated with a minimum efficiency reporting value ("MERV"). For example, a 304 filter element with a MERV rating of MERV 13 has an efficiency of 90% to filter particles between 3 and 10 microns in size (such as mold spores, dust cleaning aids, and cement dust). In another example, a filter element 304 may have a MERV rating of MERV 4 with an efficiency of 20% to filter particles between 3 and 10 microns in size. In some implementations, filter element 304 can filter particles over 50 microns in size.

[00114] The filter element 304 can be produced from any suitable structure and/or material that can trap, block or delay the passage of a harmful agent. In some embodiments, the filter element 304 may be produced from a warp and weft woven fabric formed by filaments of a material. In some embodiments, the filter element 304 may be formed from a non-woven fabric. For example, a filter element 304 may include one or more layers of a spunbonded or fused material. In some embodiments, the filter element 304 may include a foam, such as an open or closed cell foam. In some embodiments, the filter element may be pleated to increase the filtering surface area. Suitable structure combinations can be used. Some examples of suitable materials include natural materials such as cotton, wool, jute, linen or hemp. Synthetic materials such as polypropylene, nylon, polyester, nylon, rayon, or similar can be used. In some embodiments, the filter element 304 may include an adsorbent or absorbent material, such as activated carbon or the like. Combinations of these or other materials can be used.

[00115] In some implementations, a filter element 304 may include two or more materials with different filter ratings. For example, a filter element 304 may include a lightweight pre-filter for large particles, and a second main filter for smaller particles. All or part of a filter element 304 may be removable from a filter cartridge 300. For example, if a filter element 304 has reached the end of its useful life, it may be removed from a filter cartridge 300 and cleaned or replaced. by another filter element 304. Likewise, if a pre-filter is used, the pre-filter can be removed from the filter cartridge 300 and cleaned or replaced with another pre-filter. A filter element 304 can be effective in trapping particles of harmful agents even if the sanitizing agent is broken, depleted, or otherwise unavailable.

[00116] The sanitizing emitter 306 can be any element that emits a sanitizing agent operative to deactivate a harmful agent. In many implementations, the sanitizing emitter 306 may be directly adjacent to the filter element 304. For example, the sanitizing emitter may be in direct contact with the filter element 304. The direct contact may allow uniform and complete penetration of the sanitizing agent into the filter element 304. In one example, as shown in Figures 7-9, the sanitizing emitter 306 is an array of UV LEDs operative to deactivate harmful agents. Other suitable UV emitters can be used, such as a fluorescent tube. For example, as shown in Figures 5, 7, 8A, 8B and 9, the LED array is in the form of one or more lines 320 arranged around the outer circumference of the filter element 304 to project a sanitizing agent in the form of light. UV in filter element 304. Lines 320 may be parallel to each other. Lines 320 may have one or more individual emitter elements 318 arranged in lines or other arrangements. In implementations where the filter element 304 has a circular cross-section, the lines 320 may have one or more rings, which may be parallel to each other. For example, emitting elements 318, such as LEDs, may be spaced apart from each other in a line along line 320. Sanitizing emitter 306 may surround the outer perimeter of filter element 304, such as a circumferential edge of filter element 304. When more than one ring of LEDs is used, the rings can be arranged so that the LEDs are staggered. Such staggering may allow for more uniform permeation of the filter element 304 with the sanitizing agent. In some implementations, multiple LEDs can be adapted to emit different wavelengths of light. For example, some LEDs can be adapted to emit light effective for deactivating viruses, while other LEDs can be adapted to emit light adapted to kill bacteria, and so on.

[00117] In many implementations, UV light may have a wavelength in the range of 220-280 nanometers. In some implementations, the UV light can have a wavelength of up to approximately 400 nanometers. In a preferred implementation, the UV light may have a wavelength of approximately 264265 nanometers. As harmful agents pass into the filter element 304, they can become exposed to UV light and can be deactivated, whether they become trapped or pass through the filter element 304. Thus, the sanitizing agent, like the UV light, can prevent the filter element 304 from containing harmful agents.

[00118] The filter cartridge 300 may include one or more containment elements that help prevent the sanitizing agent from exiting the filter cartridge 300. For example, as shown in Figures 5, 7, 8A, 8B and 9, the cartridge filter element 300 may include one or more containment elements 302 and a containment element 308. In the embodiment where the sanitizing agent is light, the containment element 302 and the containment element 308 may be produced from a material that absorbs and/or reflects light to prevent it from escaping from the filter cartridge 300. For example, the containment element 302 and/or the containment element 308 may be made from a UV-absorbent or reflective polymer, aluminum foil, or other suitable materials. In the example where the light is UV, it may be important to help reduce the UV light exiting the emitter from impacting the skin or eyes of the user or others nearby. The containment element 308 may be disposed transversely outwardly in a direction from an edge of the filter element 304 toward the cartridge housing 310 relative to the sanitizing emitter 306. Thus, the containment element 308 may surround an outer perimeter. of the sanitizing emitter 306 and contain the sanitizing agent in the transverse direction relative to the filter element 304. A containment element 302 may be disposed outwardly in the longitudinal direction from the inner surface 124 toward the outer surface 122 of the impermeable membrane 102 relative to the filter element 304. Another containment element 302 may be disposed inwardly in the longitudinal direction from the outer surface 122 toward the inner surface 124 of the impermeable membrane 102 relative to the filter element 304. Thus, the containment elements 302 may contain the sanitizing agent in the longitudinal direction relative to the filter element 304.

[00119] In other examples, a sanitizing agent may be a fluid that deactivates a harmful agent, such as a disinfectant liquid. The sanitizing emitter 306 emits the sanitizing agent to permeate the filter element 304. For example, an ethanol or sodium hypochlorite solution may be applied by an emitter, such as a nozzle or sprayer, to the filter element 304.

[00120] In many implementations, the filter element 304 may form a seal between the inner walls of the cartridge housing 310, the containment element 308, and/or the sanitizing emitter 306. For example, an external dimension of the filter element 304 may be larger than the internal dimension of the sanitizing emitter 306. The filter element 304 may thus have an interference fit with the cartridge housing 310, the containment element 308, and/or the sanitizing emitter 306. In some implementations , a seal may be placed between the filter element 304 and the cartridge housing 310, the containment element 308, and/or the sanitizing emitter 306. For example, when the sanitizing agent is light, a transmission material light can be placed between the sanitizing emitter 306 and the filter element 304. For example, a fused quartz material that transmits UV light can be placed between the cartridge housing 310, the containment element 308, and/or the sanitizing emitter 306 and the filter element 304.

[00121] The sanitizing agent source 200 contains a source for the sanitizing agent. In many implementations, the sanitizing agent source 200 is a power source such as a primary or secondary battery adapted to power a sanitizing emitter such as a light source. In other implementations, the source of sanitizing agent 200 may be a reservoir of a sanitizing agent, such as a sanitizing fluid, and a mechanism such as a pump, fan, compressor or valve adapted to distribute the sanitizing fluid to the sanitizing emitter. The sanitizing agent source 200 is operatively coupled to the sanitizing emitter to supply the emitter. For example, when the sanitizing agent source 200 is a power source, the sanitizing agent source 200 may be operatively coupled to the sanitizing emitter by a wire to carry electrical energy. In another example, when the sanitizing agent is a fluid, the sanitizing agent source 200 may be coupled to the sanitizing emitter by a conduit such as a tube, pipe or hose.

[00122] The sanitizing agent source 200 may be disposed in any suitable location on the protective mask 100. For example, the sanitizing agent source 200 may be associated with a fastening element as shown, for example, in Figure 1. In In other examples, as shown in Figure 8B and Figure 9, the sanitizing agent source 200 may be disposed within the cartridge housing 310 of the filter cartridge 300. For example, the sanitizing agent source 200 may be a power source. 314 disposed within the cartridge housing 310. The power source 314 may be a primary battery (single use), or may be a secondary battery (rechargeable), such as a lithium battery. The power source 314 may be recharged via a power connector 316 adapted to receive power from an external source, such as an external battery, alternating current adapter, wall outlet, or the like. The sanitizing agent source 200 may be operated by an actuator, such as a switch or valve that controls the supply of the sanitizing agent.

[00123] In some implementations, the sanitizing agent may allow the use of a less dense filter element 304 (i.e., a filter element with lower filtration efficiency) while maintaining a desired level of deactivation of a harmful agent. Because a lower efficiency 304 filter element is more porous than a higher efficiency filter element, the lower the efficiency, the easier it may be for the user to breathe while wearing the protective mask 100. A lower efficiency 304 filter element It may also be less expensive and/or have a longer lifespan than a higher efficiency 304 filter element, which may become prematurely clogged and inoperable to breathe through. Thus, the sanitizing emitter and sanitizing agent may increase user comfort, allow a user to participate in activities with a higher respiratory rate than a higher efficiency 304 filter element (e.g., strenuous physical activity, stressful situations, or similar), or increase the useful life of the protective mask 100.

[00124] In the assembled filter cartridge 300, the containment element 308 can be inserted into the cartridge housing 310. The sanitizing emitter 306 can be inserted into the containment element 308. The filter element 304 can be inserted into the cartridge housing. - tappet 310 within the sanitizing emitter 306. The filter element 304 can be inserted snugly against the sanitizing emitter 306. As such, the sanitizing emitter 306, including individual emitting elements 318, can be directly adjacent to the filter element 304. containment element 302 can be mounted on the filter element 304.

[00125] Figure 12 shows an example of a filter cartridge 500. The filter cartridge 500 may be similar to the filter cartridge 300, but may include various containment structures. The filter cartridge 500 includes a filter element 304, sanitizing emitter 306, emitting elements 318, one or more containment elements 502, a containment element 508, a clamping mechanism 312, and a cartridge housing 510 that supports the other components. of filter cartridge 500. These elements may be similar to the analogous elements of filter cartridge 300 described herein.

[00126] The containment element 502 includes one or more containment structures 528 disposed at opposite ends of the housing 510. The containment structures 528 contain the sanitizing agent within the filter cartridge 500. For example, the containment structures may reflect and /or absorb the sanitizing agent to contain the agent within the filter cartridge 500. The containment structure 528 of a containment element 502 may form a tortuous path 526 that allows air to pass through the containment element 502, but which blocks a sanitizing agent emitted by the sanitizing emitter 506 from passing through the containment member 502. In some implementations, the containment structure 528 may be formed as a baffle 528. In some implementations, a containment structure 528 may form an opening 530 therein. . In some examples, a containment structure 528 may be a thin sheet of material that blocks, reflects, filters and/or absorbs UV light. For example, a containment structure 528 may be formed of metal, opaque plastic, a metallized film, a dyed plastic substrate, combinations thereof, or similar materials that may structurally form a baffle 528, and may contain UV light.

[00127] The filter cartridge 500 may have a chamber 522 formed therein and configured to contain the filter element 304 and/or one or more sanitizing emitters 506. The housing 510 and/or one or more of the containment structures 528 may form the chamber 522 within the filter cartridge 500. For example, the housing 510 may form a circumferential wall of the chamber 522 and the containment structures 528 may form opposite ends of the chamber 522. The chamber 522 may house or contain the filter element 304 and one or more sanitizing emitters 506. In many embodiments, the sanitizing emitter 506 may be in contact with the filter element 304. In some embodiments, a sanitizing emitter 506 may be disposed within the chamber 522, separately from the filter element 304 , such as the sanitizing emitter 506b.

[00128] In some implementations, air may flow to a first opening 530a, along the tortuous path 526 around a baffle 528 and an opening 530b disposed within the filter cartridge 500, such as an opening 530b adjacent to the chamber. 522. The air may continue into the chamber 522, through the filter element 304, and to an opposite end of the chamber 522 from which the air entered. When air passes through chamber 522, the air may be sanitized by the sanitizing agent, and/or filtered by filter element 304. Air may continue through opening 530c, around a baffle 528, and exit filter cartridge 500 at a 530d aperture. The airflow can be reversed as the user inhales and exhales, with air being sanitized in both directions as it flows through the cartridge.

[00129] In some implementations, the chamber 522 may be a reflective chamber 522 operative to reflect the sanitizing agent emitted by a sanitizing emitter 506. For example, the housing 510 and/or a deflector 528 may have a reflective property, or have a coating or reflective layer 524 disposed thereon. For example, in implementations where the sanitizing agent is UV light, the reflective layer 524 may reflect UV light within the reflective chamber 522. Reflections from the sanitizing agent within the reflective chamber 522 may increase contact of the sanitizing agent with harmful agents. For example, a beam of light may reflect hundreds, thousands, or even more times within the reflective chamber 522, with each reflection increasing the likelihood that the sanitizing agent can contact and neutralize a harmful agent. A reflective chamber 522 may allow the use of fewer sanitizing emitters 506 or a smaller sanitizing agent source 200 than a comparable filter cartridge without a reflective chamber. As discussed above, reflections from the sanitizing agent within chamber 522 can increase the likelihood that a harmful agent can be neutralized by the sanitizing agent. Thus, fewer emitting sanitizers can be used relative to a filter cartridge without a reflective chamber 522, thereby reducing the number of emitters to maintain a level of effectiveness. For example, a sanitizing emitter 506 including a single emitting element 318 may be used. In implementations where an emitting element 318 is a UV-LED, with a reflective chamber 522, the battery life of the emitting source 200 can be extended relative to a filter cartridge without a reflective chamber 522.

[00130] The assembled filter cartridge 300 or 500 can be connected to the waterproof membrane 102. For example, the fastening mechanism 312 associated with the cartridge housing 310 and the complementary fastening mechanism 120 associated with the waterproof membrane 102 can be connected each other. A seal may be formed between the filter cartridge 300 and the impermeable membrane 102 to prevent harmful agents from bypassing the filter cartridge 300. The sanitizing agent source 200 may be connected to the filter cartridge 300 to supply the sanitizing agent. for example, through a conduit wire. The user may activate the sanitizing agent source 200 to initiate the supply of sanitizing agent to the filter cartridge 300. The source 200 may be activated by an actuator, such as a switch, valve, or the like.

[00131] The user can put on the protective mask 100 by placing the waterproof membrane 102 over their face. For example, the user may align the mouth and nose mask portion 114 with his or her nose and mouth and the eye mask portion 112, if included, with his or her eyes. The user may place the securing member 104 around his head and/or neck and tighten the securing member 104 to form a seal between the sealing member 118 and his face.

[00132] As the user breathes, air is drawn into the filter cartridge 300, 500. The seal between the user's face and the waterproof membrane 102 formed by 118 can prevent air from bypassing the filter cartridge 300 Thus, all air that the user inhales or exhales passes through the filter cartridge 300. Harmful agents in the air can be trapped by the filter element 304 and can be deactivated by the sanitizing agent. Thus, if the harmful agent comes into contact with the user, the user cannot be harmed. Furthermore, the sanitizing agent can keep the 304 filter element clean and prevent a build-up of harmful agents.

[00133] For example, if a user wearing the protective mask 100 is in an environment where droplets of the SARS-CoV-2 virus are present in the air, the droplets attracted to the filter element 304 may become trapped or blocked by the filter element 304. UV light emitted by a sanitizing emitter 306 can deactivate virus particles in droplets, damaging RNA. Droplets that may pass through the filter element 304 may become non-harmful as the UV light deactivates the virus particles. As the user inhales and exhales, the breath can be sanitized of virus particles, thus protecting the user and others.

[00134] The user can replace the filter cartridge 300 after a certain time, volume of air breathed, number of breaths or if the filter element 304 becomes clogged. As the sanitizing agent source 200 becomes depleted, the user may replenish the sanitizing agent source 200. For example, the user may replace or recharge batteries, or refill a reservoir or container of a sanitizing agent, thereby maintaining the protection provided. by protective mask 100.

[00135] Figures 13A and 13B illustrate another example of mask 600. Mask 600 may be substantially similar to mask 100 and other example masks described herein. However, the mask 600 may include a frame surrounding the face shield or lens, where the seal may be coupled to the frame and extend around a perimeter thereof, and the filter cartridge may also be coupled to the frame. In these examples, mask 600 may have a larger transparent area, allowing for easier communication and visibility for both mask wearers and others interacting with the wearer (e.g., patients). Furthermore, as shown in Figures 17A-17G and 18A-18G, the mask 600 may be formed from clear and/or transparent materials to allow the mask to be as "invisible" or inconspicuous as possible when worn on a user. Figures 17A-17G illustrate photographs showing the clear or transparent aspects of mask 600 that are shown in line drawings in Figures 18A-18G of a mask 700. For example, various materials such as padding, sealing, frame and the like can be formed from clear or transparent materials.

[00136] The mask 600 and/or mask 700 may include an impermeable membrane 612, which may be substantially similar to the impermeable membrane 102. In some cases, the impermeable membrane 612 may be fully transparent, or at least partially transparent, and function as a lens or other visible element to allow the user's facial features and expressions to be visible to others. The waterproof membrane 612 can be configured to move away from the user's face, which can increase user comfort as well as help reduce mist from the user's breath. In one example, the waterproof membrane 612 may have a first portion 616 or upper portion extending downwardly from an upper edge 614 at a first angle. The first portion 616 may transition at an inflection point 610 to a second portion 618, which may continue toward a lower edge at a second angle, different from the first angle. In this way, the inflection point 610 may define a crest or other boundary between the two portions 616, 618. It should be noted that the position of the inflection point 610 may vary along the surface of the waterproof membrane 612, so that the areas of the first and second portions 616, 618 may vary along the width of the waterproof membrane 612. In some embodiments, a center of the inflection point 610 is positioned to be adjacent or aligned with the user's nose, so that the mask can defining an increase in volume or spacing between the user's face and the inner surface of the waterproof membrane 612 at a location corresponding to the user's nose. In other words, the waterproof membrane 612 may be configured to extend outward to accommodate the user's nose so that the nose does not impact or touch the inner surface of the waterproof membrane 612.

[00137] Referring to Figures 13B, 17B, and 18B, the mask 600 and/or mask 700 may include a structure 602 that joins the waterproof membrane 612. The structure 602 may define a structural support for the mask 600 and/or 700, and may extend around a perimeter of the waterproof membrane 612. The structure 602 may include one or more attachment brackets 606a, 606b, 606c, 606d, which may be strap supports or strap connectors. In one example, the attachment brackets 606a, 606b, 606c, 606d may be formed as flaps that extend outwardly and rearwardly from the frame 602 and that include strap openings 605 for receiving a portion of a strap therethrough. . In some embodiments, the mask 600 and/or 700 may be configured to be supported by two straps that extend around the portion of the user's head, and in these cases, there may be two sets of attachment brackets for each side of the mask 600. and/or 700, and for the upper and lower fixing straps. The double straps and positioning of the attachment brackets help distribute the force of the straps across multiple locations on the mask 600 and/or 700, making it more comfortable to wear.

[00138] Structure 602 may be formed from a rigid material, such as plastic, and is configured to help define a seal for the mask 600 and/or 700 on the user's face. In some cases, structure 602 may also house components such as the filter cartridge. In such cases, the structure 602 may define one or more pockets that can receive the filter cartridge, batteries, or other components of the mask 600 and/or 700. In one embodiment, a cartridge pocket 642 may be defined at a lower edge 640 of the structure 602, which positions the cartridge below the waterproof membrane 612 so that the user's mouth, nose, and eyes are not obscured by the cartridge when positioned over the structure 602. Relatedly, the structure 602 may include one or more fastening features that may act to secure the cartridge to the frame 602. In some embodiments, the frame may be formed from a clear or substantially clear material.

[00139] A seal 608 extends around the interior of the structure 602 and is configured to be positioned on the user's face. Seal 608 may be a flexible material to conform to the user's face to prevent the ingress of air and harmful agents between the user's skin and the bottom or outer surface of seal 608. In one example, seal 608 may be extend around the perimeter of the mask 600 and/or 700 and may have a curvature that matches the user's facial features, for example, may generally track the shape of the user's face. Seal 608 may be formed from an impermeable or substantially impermeable material, such as rubber, silicone or the like. Seal 608 may include a lower extension 644 or a chin portion. The lower extension 644 extends inwardly toward the inner surface of the waterproof membrane 612 and defines an extended surface area for the seal 608. The lower extension 644 is configured to seal against the user's chin and adjacent area to help maintain a seal, as the user can move their mouth, for example, while speaking. This 644 extension can act as a chin strap or chin seal. The seal may be formed like a cushion and provide a soft feel to the user. In some embodiments, the seal may be formed from a clear or transparent material, such as clear silicone, rubber, or soft plastic. See, for example, Figures 17A-17G and 18A-18G which show clear or transparent aspects of the seal.

[00140] Figure 16 illustrates an exploded view of the filter cartridge 604. The filter cartridge 604 can be configured to be movable so as to be accessed by a user to replace a filter 620 positioned therein. For example, the filter cartridge 604 may be rotatable, removable, or rotatable relative to the frame 602. In one example, the filter cartridge 604 may define a pocket 630 or a cavity for receiving the filter. As an example, the filter cartridge 604 may define a cartridge body 628 that may have a curvature corresponding to the frame 602 at the connection location, so that the cartridge 604 may seat within the frame 602. The cartridge body 628 may have oval shape with a curvature along its length, for example, a middle portion of the cartridge body 628 may be positioned in a lower plane than the two ends of the cartridge body 628. The curvature may be selected to also correspond to a shape of the user's face, for example, the lowest portion of the cartridge body 628 may be aligned with the user's chin when positioned on the user's face.

[00141] A lip 622 may extend upwardly from an upper surface of the cartridge body 628 and extend around the perimeter of the cartridge body 628. In one embodiment, the lip 622 is inserted from an outer edge of the cartridge body 628 such that a shelf 632 or lip is defined between the outer edge of the cartridge body 628 and the outer edge surface of the lip 622.

[00142] Coupling features 624a, 624b may be coupled to the cartridge body 628. Coupling features 624a, 624b allow the cartridge 604 to be movable or removable from the frame 602. In one example, coupling features 624a, 624b can be formed as mechanical components that couple to corresponding features within the structure 602. As an example, a first coupling feature 624a can be formed as a flexible tab that can flex and spring back to an original configuration. As another example, a second coupling feature 624b may be formed as two teeth extending outward from the cartridge body 628. However, other coupling features 624a, 624b may also be used, for example, hinges, fasteners or the like.

[00143] A gasket 626 may be positioned on the cartridge body 628 to assist in sealing the cartridge body 628 to the structure 602. The gasket 626 or seal may be formed by a compressible material that compresses and expands to fill the connection between two components. In one example, the gasket 626 is positioned on the shelf 632 and is positioned against the outer wall of the bead surface 622.

[00144] A filter 620 is coupled to the body of the cartridge 628. For example, the filter 620 may be positioned within the bag 630 and expand against an internal surface of the rim 622. The filter 620 is configured to fill the entire bag 630, so that any airflow through the cartridge 604 must be through the filter 620. The filter 620 may be held in one position by friction (e.g., the filter 620 may be slightly larger than the bag and compress to be held in position ), adhesive, fasteners or similar. In some examples, the filter 620 may be removable from the cartridge 604, allowing the user to remove the filter 620 and replace it as needed or desired. In other examples, the entire cartridge 604 may be configured to be removed and replaced as needed. Filter 620 is generally a filter material such as fabric, synthetic plastic fibers, fiberglass (woven or non-woven) that is configured to allow molecules of a certain size through it, e.g., limiting the size of molecules that can flow through the same. In some examples, the filter 620 may be a fine mesh of synthetic polymeric fibers, such as a polypropylene non-woven fabric that can filter 95% of the airborne particle. The filter 620 may also have a minimum efficiency reporting value (MERV) of 13 to 16, and preferably 16, to capture particles larger than 0.3 micrometers, where the particles that are captured include bacteria, droplets and the like. . The filter 620 may also be pleated or otherwise folded to increase the surface area within the cartridge 604.

[00145] To assemble the mask 600 and/or 700, the waterproof membrane 612 can be coupled to the structure 602. For example, the waterproof membrane 612 can be fixed through molding, adhesive, ultrasonic welding, or the like. Seal 608 may be attached to frame 602 in a similar manner and be positioned to form a lower engagement surface of mask 600 and/or 700 and be inserted inwardly from an outer edge of frame 602. Straps 648a, 648b can be coupled to the structure 602 through the fixing brackets 606a, 606b, 606c, 606d. For example, a first strap or upper strap may be threaded through the attachment brackets 606a, 606n and a second strap or lower strap may be threaded through the attachment brackets 606c, 606d.

[00146] The filter cartridge 604 can be received within the cartridge pouch 642 and secured in position. For example, the coupling components 624a, 624b may be received within corresponding features in the structure 602 adjacent to or formed within the walls defining the cartridge pocket 642. The coupling components 624a, 624b may be configured such that a first end of the cartridge 604 can remain attached to the frame 602, that the second end can be arranged so that the cartridge 604 can rotate relative to the frame 602, which can allow the user to open or rotate the cartridge in order to access and replace the filter 620. When fixed in position in the frame 602, the gasket 626 compresses into position and then expands to fit the walls of the frame 602. In this way, the gasket 626 or seal prevents the flow of harmful agents and/or air through of frame 602 and all airflow is through filter 620.

[00147] Referring to Figures 14A-14C, to use the mask 600 and/or 700, the user can position the mask 600 on their face, with the upper end of the mask 600 being positioned next to their forehead and a lower end of mask 600 is positioned next to your chin. Straps 648a, 648b can be positioned around the user's head, above and below the ears, respectively. The seal 608 then surrounds the user's face, sealing against the user's skin and conforming to the shape of the user's face. Air can flow in and out of the space defined between the user's face and the waterproof membrane 612 through the cartridge 604. The cartridge 604 acts to filter the airflow so that particles, droplets, and the like, which are above a predetermined size, cannot flow either into or out of the filter 620. In this way, the user is protected from airflow with harmful agents and others are protected from any harmful agents expelled by the user. Because the structure 602 and the seal 608 can extend around the user's eyes, mouth, and nose, the user's facial expressions can be more easily seen by others when the waterproof membrane 612 is transparent. This allows emotions to be more easily conveyed to others, as well as aids communication between others.

[00148] Figures 19A-19F illustrate another example of a mask 800. Mask 800 may be substantially similar to mask 100, mask 600 and other example masks described herein. Like mask 600, mask 800 may include a structure that surrounds the face shield or lens. The fence can be attached to the structure and extend around its perimeter. The filter cartridge can also be attached to the frame. The mask 800 may have a sufficiently large transparent area to allow visibility of the user's face to others with whom the user interacts (e.g., patients). The transparent area may be large enough not to obstruct the user's peripheral vision.

[00149] Mask 800 may include an impermeable membrane substantially similar to impermeable membranes 102 and 612. In some cases, the impermeable membrane 812 may be fully transparent or at least partially transparent. In some examples, the waterproof membrane 812 may function as a lens for other visible elements to allow the user's facial features and expressions to be visible to others. The waterproof membrane 812 may be configured to extend away from the user's face. Such a configuration may increase user comfort and may help reduce fogging of the waterproof membrane 812, such as due to user breath, perspiration, or the like. In some embodiments, lens 812 may be configured to define an extra pocket or space adjacent to the wearer's mouth and nose, allowing for a more comfortable fit and helping to reduce fogging.

[00150] In some examples, the waterproof membrane 812 includes a first portion 816 or upper portion that curves around or corresponds to the user's face. The first portion 816 may extend from approximately the user's forehead to the user's chin when the mask 800 is in use. Such a large first portion of 816 can be beneficial for placing a tipping line or pointing away from the user's line of sight. The first portion 816 may extend away from the user's face such that the user's face does not contact the waterproof membrane 812. The first portion 816 may transition to one or more portions 817 at an inflection line 810. The second portion of 817 may be disposed on the respective left and right sides of the first portion. The second portion 817 may be flat or curved. The first and second portions may transition to one or more third portions 819. The third portion 819 may extend across the user's chin between the left and right second portions. The third portion 819 may be curved or may be flat. The waterproof membrane 812 may include an edge 815 configured to be received in a portion of a structure 801 of the mask 800.

[00151] In some embodiments of mask 800, the waterproof membrane 812 is received in a frame 801. The frame 801 may include a first frame portion 802 and a second frame portion 803. The frame portions 80 and 803 may interconnect with each other and/or with other components of the mask 800 to provide a stable platform for the waterproof membrane 812 and to secure the mask 800 to a user's face. For example, the first frame part 802 and the second frame part 803 may be coupled together at a joint 805 (see, for example, Figure 19B). In some embodiments, two gaskets 805 are disposed on respective left and right sides of the mask 800. In some embodiments, the first frame portion 802 is an upper frame portion and the second frame portion 803 is a lower frame portion. The frame portions 802 and 803 that form the frame 801 may extend around the perimeter of a user's face. The structure 801 may be formed from materials similar to the structure 603, for example, a rigid material such as plastic. The use of a rigid material can help seal the mask 800 to the user's face, such as with a seal 808.

[00152] One or both parts of the upper structure 802 and/or the lower structure part 803 may include one or more attachment brackets 806, such as attachment brackets 806a, 806b, 806c and/or 806d. The attachment brackets 806 may be substantially similar to the attachment brackets 606 (e.g., attachment brackets 606a, 606b, 606c, 606d) described herein, further description of which is omitted for the sake of brevity.

[00153] The structure 801 can receive other components of the mask 800, such as a seal 808, a filter cartridge 804, a source of sanitizing agent such as batteries 200, an armband 823, a source cover of sanitizing agent 821, a receptacle of cartridge 820, and/or one or more straps (e.g., received on attachment brackets 806).

[00154] For example, the upper part of the structure 802 can receive the clamp 823 in an upper part thereof. The clamp 823 may form a portion of a sanitizing agent compartment, such as a compartment that houses one or more batteries 200 or other power source. The clamp 823 and/or an upper frame portion of the portion 802 may selectively receive or couple to the sanitizing agent source cover 821 so as to include one or more sanitizing agent sources, such as one or more batteries 200 in the mask 800.

[00155] Seal 808 may be received in structure 801. Seal 808 may be substantially similar in many respects to seal 608, which are not repeated for the sake of brevity. For example, seal 808 may be formed from a flexible or deformable material to conform and seal against the user's face to prevent or reduce the ingress of air and harmful agents between the user's skin and the bottom or outer surface. seal 808. Seal 808 may include a chin portion or lower extension 809 similar to lower extension 644 (shown for example in Figure 19D) that seals against the user's chin and possibly a portion of the user's neck to provide a effective seal against the entry of air and/or harmful agents between the user's face and the mask 800.

[00156] The cartridge receptacle 820 may be coupled to or received in a portion of the frame 801. For example, the cartridge receptacle 802 may couple to the lower portion of the frame 803. The cartridge receptacle 802 may be formed from a material rigid such as plastic or metal, and is configured to receive a filter cartridge 804. The cartridge receptacle 820 may provide a sturdy base for the filter cartridge so that the interface between the receptacle and the cartridge is resistant to bending, twisting or other bending and the formation of gaps that may create a passage around the filter cartridge 804 to the user's face. The cartridge receptacle 820 may act as a containment element that contains the sanitizing agent so as to protect the user from exposure to the sanitizing agent. For example, the cartridge container 820 may block UV light emitted by the sanitizing agent from the user's face. The cartridge container may include one or more openings that allow sanitized air to flow from the filter cartridge to the user's mouth.

[00157] Filter cartridge 804 may be similar to other filter cartridges disclosed herein and include a sanitizing emitter and a filter element to trap and/or neutralize harmful agents. The filter cartridge 804 may be removable and attachable to the cartridge receptacle 802 and thus to the mask 800. The sanitizing emitter 826 may be formed by a circuit board 827. The circuit board 827 may be a rigid plate ( for example, fiber reinforced board, such as an FR4 board), or a flexible circuit board. Sanitizing emitter 826 includes one or more emitting elements 828 that may be operative to emit a sanitizing agent to neutralize a harmful agent, similar to other emitting elements described herein. In many embodiments, the emitting elements 828 are LEDs or more specifically LEDs that emit light in a UV spectrum. One or more emitter elements 828 may be electrically coupled to circuit board 827 so as to receive electrical power from batteries 200 distributed by circuit board 827. One or more emitter elements 828 may be physically coupled to circuit board 827 so as to support and positioning the sanitizing emitters relative to the filter element 836 so that the emitters can be arranged to permeate the filter element 83 with a sanitizing agent. The batteries 200 may provide power to the sanitizing emitter 826 and the emitting elements 828 through one or more wires (not shown) extending from the batteries 200 received in the battery compartment through a portion of the structure 801, to the sanitizing emitter. , either directly, or through an 844 controller.

[00158] The sanitizing emitter 826 may be disposed or received in a first joint 830. The first joint 830 may include a first gasket body 834. The first joint body 834 may be a thin recessed element for receiving the sanitizing emitter 826. The first gasket body 834 may have one or more openings 832 formed to allow air to pass through the body 834 into or out of the mask 800. The interstitial portions of the body 834 between the openings 832 may form one or more ribs 833 operative to support the sanitizing emitter 826. The sanitizing emitter may be arranged to permeate the filter element 836 with a sanitizing agent operative to deactivate the harmful agent.

[00159] Filter element 836 may be similar to another filter element disclosed herein. For example, filter element 836 may be suitable for trapping a harmful element to prevent it from reaching the user. The filter element 836 may be flat, curved, or U- or L-shaped. The filter element 836 may be formed from a woven or non-woven material. Filter element 836 may be replaceable, for example, when dirty, clogged or at the end of its service life. The filter element 836 may be received in, or disposed in, a portion of a second gasket 838. The second gasket 838 may include a second gasket body 842. The second gasket body 842 may be a thin element with a recess for receiving the filter element 836. The second gasket body 838 may have one or more openings 840 formed therein to allow air to pass through the body 838 into or out of the mask 800. The opening 840 may be a single opening or may have multiple openings, similar to openings 832 with ribs similar to ribs 833.

[00160] The first joint body 834 and/or second joint body 838 may be flat, may be curved, may be L-shaped (as shown, for example, in Figure 19E), may be U-shaped, or another way. An advantage of a curved, L, U, or similar shape may be the ability to include more surface area for the filter element 836 and/or sanitizing emitter 826 by wrapping a portion of the element back toward the user's face, thus to allow easier breathing and/or longer filter life. The first gasket 834 and the second gasket 838 may seal the housing 822 and/or the cartridge receptacle 820 so as to reduce or prevent the bypass of air or a harmful agent around the sanitizing emitter 826 and/or filter element 836 .

[00161] The filter cartridge 804 and the cartridge receptacle 820 can be adapted to snap, click, slide together or be assembled without the use of tools, so as to make it easier for the user to insert and replace the filter. For example, the filter cartridge may include a housing 822 that receives other filter cartridge components, such as a sanitizing emitter 826, a filter element 836, and one or more seals or gaskets. The housing 822 may include one or more rails 856 adapted to be received in a portion (e.g., an opening thereof) of the cartridge receptacle 820. The rails 856 may act as guides for aligning the filter cartridge 804 with the cartridge receptacle. 820. The one or more rails 856 may be arranged in a portion of the housing 822 different from that shown.

[00162] The controller 844 may be received in the cartridge receptacle 820 and/or coupled thereto. A controller cover 824 may be received over the controller 844 and coupled to the cartridge receptacle 820 to house or close the controller 844. The controller cover 824 may be selectively removed from the mask 800, for example, to allow for recharging, maintenance, or replacement. . The controller 844 may be operative to control and/or communicate the operation of the sanitizing emitter 826. The controller 844 may include one or more indicators 846, such as LEDs that indicate a status of the mask 800. For example, the indicators 846 may communicate the battery charge status (e.g. charged, partially charged, exhausted or similar). In other examples, the indicators 846 may indicate the radiant power of the sanitizing emitter, a fault condition, or the like. Indicators 846 may change color, flash or pulsate, to indicate status to a user. The indicators 846 may be visible to a user while wearing the mask 800, and/or may be visible to a person other than the user.

[00163] The controller 844 may include a first actuator, such as a power actuator 848 with an operator interface 850 operative to turn on/off the sanitizing emitter and/or to adjust the radiant power of the sanitizing emitter. The power actuator 848 may be an on/off switch, a tactile switch, a variable resistor, a capacitive touch input, or the like. The controller 844 may include a second actuator 852 with an operator interface 854. The operator interface 854 may be received in an opening 825 formed in the cover of the controller 824. The second actuator 852 may be operative to restart operation of the mask 800, such as after a failure, when installing new batteries 200, and/or a new filter cartridge. Any of the operator interfaces 850 or 854 may be suitable for interfacing with a user's fingers and/or hands, such as a button, slider, or the like.

[00164] In some implementations, a mask such as a mask 100, 600 or 800 may include one or more sensors that can detect the presence of the sanitizing agent. For example, a sensor may be arranged to detect leakage of sanitizing agent from the filter cartridge. In some implementations, the sensor is a sensor adapted to detect UV light emitted by a sanitizing emitter 306, 506. The sensor may provide a warning to a user that the integrity of the mask is compromised. Additionally, the sensor can provide a warning to the wearer of sanitizing agents from sources outside the mask. In some implementations, a sensor may be arranged to detect proper functioning of the mask. For example, a sensor may be disposed in a filter cartridge and may confirm that a sanitizing agent is being emitted. In some implementations, sensors may be arranged both to warn of leakage of the sanitizing agent and to confirm mask operation.

[00165] In some implementations, a mask 100, 600, or 800 may include an expansion interface. An expansion interface can allow additional capabilities to be added to a mask. For example, an expansion interface can be configured to accept a communications component such as a microphone. A communication component may allow a user to communicate with others while wearing the mask. A communication component may be in wired or wireless communication with another communication device, such as a user's telephone, to allow a user to make telephone calls while wearing a mask.

[00166] In some implementations, a portion of the impermeable membrane may be configured to display information projected thereon. For example, a portion of the waterproof membrane may be adapted to form a portion of an upside-down display. A suitable projector may be configured to be connected to the expansion interface (e.g., by clipping the interface) so that information can be displayed to the user on a portion of the waterproof membrane while wearing the mask 100. The portion configured to display information It can be transparent or semi-transparent, such that the user can see the displayed information, and the user's environment simultaneously.

[00167] The description of certain embodiments included herein is merely exemplary in nature and is not intended in any way to limit the scope of the disclosure or its applications or uses. In the detailed description of the embodiments of the current systems and methods, reference is made to the drawings that form part of the present document and which are shown by means of specific illustrations of the embodiments, in which the described systems and methods can be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the currently disclosed systems and methods, and it should be understood that other embodiments may be used, and that structural and logical changes may be made without departing from the spirit. and the scope of disclosure. Furthermore, for purposes of clarity, detailed descriptions of certain features will not be discussed when they would be apparent to those skilled in the art so as not to obscure the description of the embodiments of the disclosure. The included detailed description should therefore not be taken in a limiting sense, and the scope of the disclosure is defined solely by the appended claims.

[00168] From the foregoing, it will be appreciated that, although specific embodiments of the invention have been described here for purposes of illustration, various modifications may be made without departing from the spirit and scope of the invention.

[00169] The particulars shown here are by way of example and for purposes of illustrative discussion of the preferred embodiments of the present invention only and are presented for the sake of providing what is believed to be the most useful and easily understood description of the principles and conceptual aspects of various embodiments of the invention. In this sense, no attempt is made to show structural details of the invention in more detail than is necessary for a fundamental understanding of the invention, the description made with the drawings and/or examples making it evident to those skilled in the art how the various forms of the invention can be implemented in practice.

[00170] As used herein and unless otherwise indicated, the terms "one" and "an" are considered to mean "one", "at least one" or "one or more". Unless otherwise required by the context, singular terms used herein shall include pluralities and plural terms shall include the singular.

[00171] Unless the context clearly requires otherwise, throughout the description and claims, the words "comprises", "comprising" and the like are to be interpreted in an inclusive sense as opposed to an exclusive or exhaustive sense; i.e. in the sense of "include but not limited to". Words using the singular or plural number also include the plural and singular number, respectively. Additionally, the words "here," "above" and "below" and words of similar importance, when used in this order, shall refer to this order as a whole and not to any specific portion of the order.

[00172] Naturally, it should be appreciated that any of the examples, embodiments or processes described herein may be combined with one or more examples, embodiments and/or processes, or be separated and/or carried out between separate devices or portions of devices of in accordance with current systems, devices and methods.

[00173] Finally, the above discussion is intended to be merely illustrative of the current system and should not be interpreted as limiting the appended claims to any particular embodiment or group of embodiments. Thus, although the present system has been described in particular detail with reference to exemplary embodiments, it should also be appreciated that numerous modifications and alternative embodiments may be devised by those skilled in the art without departing from the spirit and broader intended scope of the present system, as set out in the following claims. Thus, the specification and drawings should be considered illustrative and are not intended to limit the scope of the attached claims.

Claims (21)

1. Protective mask characterized by the fact that it comprises: an impermeable membrane (102) including a nasal and mouth covering portion; a filter cartridge (300) removably attached to the impermeable membrane (102), including: a housing (310) that supports: a filter element (304) operative to trap particles of a harmful agent, a sanitizing emitter (306) positioned to illuminate an outer perimeter of the filter element (304) and act to permeate the filter element (304) from the outer perimeter with a sanitizing agent operative to deactivate harmful agent particles, and a containment element ( 308) that protects a user against exposure to the sanitizing agent. 2. Protective mask, according to claim 1, characterized by the fact that it further comprises a source of sanitizing agent (200) electrically coupled to the sanitizing emitter (306), wherein: the sanitizing emitter (306) comprises a source of light; the sanitizing agent comprises light; and the sanitizing agent source (200) comprises a power source (314). 3. Protective mask according to claim 2, characterized by the fact that the light source is a plurality of light-emitting diodes. 4. Protective mask according to claim 3, characterized by the fact that the light comprises light in an ultraviolet spectrum. 5. Protective mask according to claim 4, characterized by the fact that the light comprises a wavelength of about 220-280 nanometers. 6. Protective mask according to claim 2, characterized in that the energy source (314) comprises a battery disposed within the housing (310). 7. The protective mask of claim 1, wherein the filter element (304) filters particles above about 50 microns in size. 8. Protective mask according to claim 1, characterized by the fact that the containment element (308) forms a tortuous path configured to allow the passage of air through the containment element (308) and configured to block the sanitizing agent emitted by the sanitizing emitter (306) through passage through the containment element (308). 9. Protective mask according to claim 1, characterized in that it further comprises a structure (602) coupled to the waterproof membrane (102), wherein the structure (602) extends around a perimeter of the waterproof membrane ( 102), and wherein the filter cartridge (300) is positioned on a lower edge of the structure (602). 10. Protective mask according to claim 9, characterized by the fact that it further comprises a seal (608) coupled to the structure (602) and extending around the perimeter of the waterproof membrane (102), wherein the structure (602 ) and the seal (608) are formed from transparent or substantially transparent materials. 11. Protective mask characterized by the fact that it comprises: a transparent impermeable membrane (102) including a nasal covering portion, a mouth covering portion and a chin covering portion, wherein a face of a user is visible through the membrane waterproof (102) transparent while the user is wearing the protective mask; a filter cartridge (300) removably attached to the transparent impermeable membrane on the chin covering portion, including: a housing (310) that supports: a filter element (304) operative to trap particles of a harmful agent, an emitter sanitizing agent (306) positioned to illuminate an outer perimeter of the filter element (304) and acting to permeate the filter element (304) from the outer perimeter with a sanitizing agent operative to deactivate harmful agent particles, and a containment element (308) that protects the user against exposure to the sanitizing agent. 12. Protective mask, according to claim 11, characterized by the fact that it further comprises a source of sanitizing agent (200) electrically coupled to the sanitizing emitter (306), wherein: the sanitizing emitter (306) comprises a source of light; the sanitizing agent comprises light; and the sanitizing agent source (200) comprises a power source (314). 13. The protective mask of claim 12, wherein the light comprises light in an ultraviolet spectrum. 14. Protective mask characterized by the fact that it comprises: a structure (602) including: a first structure portion and a second structure portion coupled to each other at a joint, wherein the structure (602) extends around a perimeter of a face of a user wearing the protective mask; a transparent waterproof membrane (102) coupled to the structure (602) and including a first portion, wherein the user's face is visible through the transparent waterproof membrane (102) while the user is wearing the protective mask; a cartridge container (820) including a containment member (308) coupled to the frame (602); a filter cartridge (300) removably secured to the cartridge receptacle and including: a housing (310) that supports: a filter element (304) operative to retain a noxious agent, and a sanitizing emitter (306) positioned so as to illuminate an outer perimeter of the filter element (304) and acting to permeate the filter element (304) from the outer perimeter with a sanitizing agent operative to deactivate the harmful agent, wherein the containment element (308) protects the user from exposure to the sanitizing agent. 15. Protective mask according to claim 14, characterized by the fact that it further comprises: a battery compartment coupled to the first portion of the structure and operative to receive at least one battery, the at least one battery in electrical communication with the emitter sanitizing (306) and operative to supply electrical energy to the sanitizing emitter (306). 16. Protective mask according to claim 15, characterized in that the sanitizing emitter (306) comprises: a circuit board (827) operative to distribute electrical energy from the at least one battery to at least one emitting element such that the at least one emitting element emits the sanitizing agent. 17. The protective mask of claim 15, further comprising: a controller (844) received in the cartridge receptacle, wherein the controller (844) is in electrical communication with the at least one battery and the sanitizing emitter (306) and is operative to control the sanitizing emitter (306). 18. The protective mask of claim 17, wherein the controller (844) includes at least one indicator (846) operative to indicate a status of the protective mask. 19. Protective mask, according to claim 14, characterized by the fact that it further comprises a source of sanitizing agent (200) electrically coupled to the sanitizing emitter (306), wherein the sanitizing emitter (306) comprises a source of light; the sanitizing agent comprises light; and the sanitizing agent source (200) comprises a power source (314). 20. The protective mask of claim 19, wherein the light comprises light in an ultraviolet spectrum. 21. Protective mask characterized by the fact that it comprises: a face shield including a nasal and mouth covering portion; a filter cartridge (300) removably attached to the face shield including: a housing (310) that supports: a filter element (304) operative to trap particles of a harmful agent, a sanitizing emitter (306) positioned adjacent to the filter element (304) so as to illuminate an outer perimeter of the filter element (304) and acting to permeate the filter element (304) with a sanitizing agent operative to deactivate harmful agent particles, and a containment element ( 308) that protects a user against exposure to the sanitizing agent.