fig1 is a schematic view an embodiment of a nasal filter structure in accordance with the disclosure . referring to fig1 a nasal filter 10 comprises a generally oval - shaped configuration dimensioned to be slightly larger than the usual size of the periphery of a person &# 39 ; s nasal orifice , namely a person &# 39 ; s nostril . fig2 is a cut - away view of the fig1 structure . in fig2 , the nasal filter 10 comprises a filter layer 12 that includes a microporous filter material . the microporous filter material of the filter layer 12 can comprise a moisture resistant filter material with sufficient pore size to filter out the unwanted particulate , bacteria or virus . in an embodiment of the disclosure , the microporous filter can be , for example , a nonwoven spunlaced polyester fabric . an example of a nonwoven fabric is ps - 1025 available form polymer science , inc . of 2787 s . freeman rd ., monticello , ind . 47960 , the technical disclosure of which is hereby incorporated by reference . the ps - 1025 is a ¾ ounce beige colored apertured spunlaced polyester fabric , with a total thickness of 0 . 003 inches . as would be appreciated by a person skilled in the art , various color nonwoven fabrics could be utilized so as to match the color of nasal filter as closely as possible to the color and hue of the user &# 39 ; s skin , further diminishing the visibility of the nasal filter when worn . similarly , transparent nonwoven fabrics could be utilized , which would also reduce the visibility of the nostril filter when worn . this fabric is comfortable while also mechanically stable allowing the fabric to be used effectively in the nasal filter disclosed herein . the filter 12 is also preferably designed to be up to 99 % percent effective at screening particulate matter and other matter such as respiratory droplets and carcinogens . the placement of a nasal filter structure in accordance with the disclosure in the nasal passage allows the structure to be automatically flush when the wearer exhales . thus , the nasal filter structure in accordance with the disclosure is self - cleaning for long periods of use or during long work periods . this effect is also increased by the proximity of the screen placement to the nasal passage by the outer ring . the filter layer 12 is adhered in a fixed manner to the upper surface of an oval ring - shaped base layer 14 , preferably comprising a clear plastic material . an adhesive 16 is applied to the underside of the base layer 14 . adhesive 16 is designed to securely adhere to the peripheral edge of the person &# 39 ; s nostril , yet is removable when desired . the ring - shaped base layer 14 may comprise an appropriate size and configuration that fits a traditional nostril size such that it only adheres to the peripheral edge of the nostril . in a preferred embodiment of the present disclosure , the filter layer 12 and ring - shaped base layer 14 are flexible . flexibility allows the nasal filter to completely seal a nostril . in a preferred embodiment of the present disclosure , the ring - shaped base layer 14 is preferably no more than 1 / 16 of an inch wide , and preferably as small as 1 / 32 of an inch wide . this minimal size combined with the flexibility of the material is sufficient to firmly attach the nostril filter 10 to the user &# 39 ; s nostril , regardless of the shape and size of the respective nostril . referring to fig1 - 3 , a nasal filter of an embodiment of a nasal filter structure in accordance with the disclosure can include a secondary outer filter layer 17 . the secondary outer filter layer may be applied in addition to the filter layer 12 . the secondary outer filter layer 17 can have a lesser filtering efficiency . in an exemplary embodiment of the disclosure , the secondary outer filter layer 17 can comprise a material such as ps - 1025 - 2a provided by polymer science inc ., 2787 s . freeman rd ., monticello , ind . 47960 . with this exemplary material , smaller partials pass through the secondary outer filter layer 17 to the filter layer 12 . in an embodiment of the disclosure , the secondary outer filter layer 17 can be sprayed , such as an outer surface thereof , with a very light adhesive . an example adhesive is ps - 1034a available from polymer science inc ., 2787 s . freeman rd ., monticello , ind . 47960 . the light adhesive allows the secondary outer filter layer 17 to trap larger particles that can be subsequently examined under microscope to determine what someone is being exposed to . with such a subsequent analysis of the material trapped by the filter , a person can be treated for what they are being exposed to and not what they are allergic . this may save billions of dollars and many lives as well especially effective for molds and particulate matter . fig3 is a schematic view of an embodiment of a nasal filter structure in accordance with the disclosure . referring fig3 an embodiment of the nasal filter 10 of the invention comprises a clear , oval ring - shaped base layer 14 with the adhesive 16 applied to the underside of the base layer 14 . the filter layer 12 is formed in a smaller size relative to the clear base layer 14 and is affixed to the underside of the base layer 14 , while secondary outer filter layer 17 has , in the illustrate exemplary embodiment is larger than the filter layer 12 , but smaller than the base layer 14 . as seen from fig3 , the base layer 14 slightly overlaps the peripheral edge of the filter layer 12 such that the filter layer 12 is adhered to its underside by the adhesive 16 . however , the size of the base layer 14 is sufficiently large to define an adhesive area 14 a on the base layer 14 beyond the periphery of the filter layer 12 . the adhesive 16 thus functions to permanently adhere the filter layer 12 to its underside while also providing adhesive area 14 a that removably adheres to the person &# 39 ; s skin about the periphery of the person &# 39 ; s nostrils . it is noted that additional adhesiveness may be provided to the adhesive area 14 a . more specifically , a stronger adhesive 165 may be applied to the inner portions of the filter layer 12 that overlap with the base layer 14 . as shown , the stronger adhesive 165 may comprise spots of adhesive 165 that are applied to opposing sides of the overlapping of the filter layer 12 and base layer 14 . in this regard , it is believed that only two spots are necessary to provide adequate adherence to the peripheral edge of the person &# 39 ; s nostril . different strength adhesives can be utilized for different uses . for instances , industrial uses where high level of airborne contaminants are present benefit from stronger adhesives . these stronger adhesives securely maintain the seal around the user &# 39 ; s nostril preventing contaminants from entering the user &# 39 ; s nasal passage . a preferred industrial adhesive is a double coated medical grade acrylic pressure sensitive adhesive such as polymer science , inc .&# 39 ; s ps - 1006 , the technical specifications of which are hereby incorporated by reference . polymer science , inc .&# 39 ; s ps - 1006 is a double coated high performance medical grade acrylic adhesive with a polyethylene carrier on a 54 # c2s paper differential release liner . adhesives such as the ps - 1006 from polymer science , inc . bond well to most porous and non - porous surfaces . additionally , these adhesives have high initial tack , enabling immediate application to a user &# 39 ; s nostril once the nasal filter is removed from its packaging . similarly , these adhesives provide exceptional skin adhesion and leave no residue when removed from the skin . alternatively , for more recreational usages whereby the contaminant level is not so severe , a lighter weight adhesive suffices . a preferred recreational adhesive is a single coated medical grade acrylic pressure sensitive adhesive , such as polymer science , inc .&# 39 ; s ps - 1010 , the technical specifications of which are hereby incorporated by reference . polymer science , inc .&# 39 ; s ps - 1010 is a single coated high performance medical grade acrylic adhesive with a polyethylene carrier on a 54 # c2s paper differential release liner . adhesives such as the ps - 1010 from polymer science , inc . bond well to most porous and non - porous surfaces . additionally , these adhesives have high initial tack , enabling immediate application to a user &# 39 ; s nostril once the nasal filter is removed from its packaging . similarly , these adhesives provide exceptional skin adhesion and leave not residue when removed from the skin . referring to fig1 and 3 , a nasal filter structure in accordance with the disclosure can include a dilator 15 . preferably , the dilator 15 comprises a clear plastic so as to be inconspicuous . the dilator 15 can have a variety of different structures depending upon the application or cost target of the nasal filter structure . for example , it can be either a solid , a hinged locking , or a ratcheting piece of soft but firm plastic . in an exemplary embodiment of the disclosure the dilator 15 can comprise a central portion 15 a and two curved portions 15 b and 15 c . the curved portions 15 b and 15 c are preferably curved to the shape of the curve of the nasal filter structure and the natural curve of the flex points of a nasal passage . the two curved portions 15 b and 15 c can also flex and shape to individual nasal passage shape and are connected by a center extension 15 a extending across the center of the nasal passage as shown in , for example , fig4 . the dilator 15 creates a rigid center to tighten the nasal filter structure and expand the nasal passage wider than normal to increase breathability . in preferred embodiments , the center extension 15 a can be solid , ratcheting , or include a center self - locking hinge assembly that locks or snaps in place . the center extension 15 a will also prevent nasal screen from being inhaled or accidentally inserted . fig4 illustrates an embodiment of a nasal filter structure in accordance with the disclosure positioned in a nasal passage . as shown in fig4 , the dilator 15 extends between nasal flex points to aid in opening the nasal passage . in an illustrative embodiment , the two curved portions 15 b and 15 c can be sandwiched between both seals and under ( e . g ., directly ) the nasal passage half - moon shaped inner seal 165 shown in fig3 . this design and placement helps provide extra support and helps with proper placement of the dilator 15 at a flex point of a nose . the dilatorl 5 does not necessarily need to be used with curved portions 15 b and 15 c . in an embodiment of the nasal filter structure such as shown in fig5 a and 5b , the dilator 15 can be used in a nasal filter structure in accordance with the disclosure without the curved portions 15 b and 15 c . in this embodiment , the dilator 15 aids in tightening the filter media , e . g ., filter layer 12 and secondary outer filter layer 17 if it is used . fig6 a , 6 b and 6 c illustrate an embodiment of a dilator center extension 15 a in accordance with the disclosure . fig6 a , 6 b , and 6 c illustrate a locking mechanism . in the illustrative embodiment of fig6 a , 6 b , and 6 c , the locking mechanism includes a hinged locking mechanism , which can be a cylinder locking mechanism . referring to fig6 b , the center extension 15 a includes a flexible cylinder locking mechanism comprises a cylinder 200 and a complementary curved portion 210 . the cylinder 200 snaps into or is press fit into the complementary curved portion 210 . in an exemplary embodiment , the cylinder 200 and complementary curved portion 210 each have a latch portion . in one exemplary embodiment a latch portion can comprise a concave portion on either the cylinder 200 or the complementary curved portion 210 , and a protruding portion on the other of the cylinder 200 or complementay curved portion 210 . the corresponding latch portions latch when the flexible cylinder locking mechanism is in the locked position such as shown in fig6 c . fig6 a illustrates the flexible cylinder locking mechanism in a relaxed , non - latched position . for example , with the illustrative exemplary latch portion mentioned above , when the flexible cylinder locking mechanism is in the locked position , the protrusion portion engages the concave portion to tend to hold the structure in place via , for example a dimple and detent type action . fig7 illustrates an embodiment of a dilator in accordance with the disclosure , including a locking mechanism . in the illustrative embodiment of fig7 , the locking mechanism includes a ratchet mechanism . referring to fig7 , the dilator 15 includes two opposing arms , 215 and 220 . the opposing arms are joined by a ratcheting mechanism 225 . when pressured is applied along the length of the dilator 15 , the clips 230 within the ratcheting mechanism 225 lock . the ratcheting mechanism 225 allows the wearer to adjust how much extension , and therefore how much dilation is applied to a nasal passage . in one example , the ratcheting mechanism 225 can provide ⅛ th inch extension per clip 230 . depending upon the dimensions of the dilator and the amount of extension desired , air flow can be increased up to 100 %. fig8 a and 8b illustrate an embodiment of a dilator in accordance with the disclosure . referring to fig8 a and 8b , the dilator 15 includes a secondary extension 235 . the secondary extension 235 extends onto an extension 240 of , for example the layer 14 . this structure allows the extension 235 and 240 to conform around the natural curve of the flared portion of a nasal passage . the secondary extension 235 creates a slight outward pull . such a slight outward pull tends to improve the users breathing ability and increase air flow . in a preferred embodiment , the secondary extension 235 can be covered by a curved tab of clear adhesive to remain inconspicuous as shown in fig8 a and 8b . in the illustrative embodiments mentioned above , applying an outward force to the nasal filter structure causes the two sides of the dilator 15 to stretch away from one another . the action causes the locking mechanism to close ( e . g ., snap close ). this allows the dilator to open the nasal passage and allows the user to breath a greater volume of air compared to not using a nasal filter structure in accordance with the disclosure . fig9 illustrates an embodiment of a nasal filter structure in accordance with the disclosure . referring to fig9 , a nasal filter structure in accordance with the disclosure can include tabs 250 . the tabs 250 aid in positioning the nasal filter structure with the user &# 39 ; s nose 255 . this aids in properly positioning the nasal filter structure as a whole and in particular the dilator 15 . fig1 illustrates a nasal filter structure in accordance with the disclosure on an applicator 265 . referring to fig1 , the applicator 265 includes the tabs 250 mentioned above . each nasal filter structure is positioned upside down on the applicator 265 and held in position with easy release adhesive 260 . the easy release adhesive allows the nasal filter structures to be held in place on the applicator 265 , while allowing the applicator 265 to be easily pealed away from the nasal filter structure when in position , using , for example the tabs 250 to assist in positioning the nasal filter structure on a user &# 39 ; s nose . the use of the applicator also avoids the user touching the nasal filter structure during application , reducing the risk of unnecessary contamination . as noted above , the tabs 250 , when placed at the tip of a nasal passage on either side of a nose will automatically apposition the nasal filter structure . this allows easy application regardless of the direction of the nasal passage . fig1 schematically illustrates a nasal filter structure in accordance with the disclosure positioned on a person &# 39 ; s nose 270 . referring to fig1 , an outer clear seal 16 conforms to the shape of the nasal passage 275 . in the illustrated embodiment , the curved portions 15 b , 15 c of the dilator 15 are positioned in the area of the half moon portions 165 , which in the illustrated embodiment correspond to a natural flex point of the user &# 39 ; s nose 270 . having thus described illustrative embodiments of the invention of the disclosure in detail and by reference to embodiments thereof , it will be apparent that modifications and variations are possible without departing from the scope of the invention defined in the appended claims .
a nasal filter structure includes an artificial filter that inconspicuously covers the nasal passage with a screened nasal dilator . the structure includes a nasal dilation strip preferably positioned to affect the area of nasal flex points to aid in dilating a nasal passage in an area near a nasal flex point .