Patent Publication Number: US-4220150-A

Title: Nasal dust filter

Description:
BACKGROUND OF THE INVENTION 
     This invention relates to a nasal filter. More particular to a filter that conforms to the individual wearer&#39;s nasal passages therefore making the filter to be made on a productive basis since one particular size will fit a number of wearer&#39;s nasal passages. 
     The prior art teaches a variety of insertable nasal filters, for example, those disclosed in U.S. Pat. Nos. 1,579,486; 2,426,161; 2,433,565; 2,526,586; 2,535,155; 2,674,245; 2,890,695; 3,463,149; 3,747,597; 4,030,491; and others. 
     SUMMARY OF THE INVENTION 
     It is accordingly an object of the instant invention to provide for an improved nasal filter. 
     It is another object to provide for the same relatively little cost thereby making it generally available. 
    
    
     These and other objects of the invention will become more apparent from the following detailed disclosure and claims and by reference to the accompanying drawings, in which: 
     FIG. 1 is a elevational view of the nasal filter showing it in emplacement within the nose of a wearer, the nose being in section. 
     FIG. 2 is a sectional view of one of the filter&#39;s mounted on the clip. 
     FIG. 3 is a bottom view of the filter. 
     FIG. 4 is a elevational view of the septum bridge clip. 
    
    
     DETAILED DISCLOSURE 
     With continuing reference to the accompanying drawings wherein like reference numerals designate similar parts, the umbrellalike filter cups are mounted upon a septum bridge clip 28 which is contoured to fit around the septum walls 25 therefore aligning the filter cups 27 in position within the nasal passages 26. The said septum bridge clip 28 is made from non-allergenic flat surfaced flexible plastics from which a pair of arms extend from a central connecting portion 24 extending vertically upward and parallel around the outer septum 43 then bowed in toward each other to apply slight tension on the septum walls 25 angling at a slight degree upward toward the center of the nasal passages 26 terminating with a round plastic ball 33, for each arm 28. 
     The filter cups 27 structure is made from non-allergenic flexible plastic materials formed into the shape of an umbrella, open base, covered top. The frame includes a common center socket cylinder, 31 from which flexible plastic limbs 30 protrude horizontally and radially round said cylinder 31 extending vertically downward terminating in equal lengths and adhered by any conventional method to a soft round plastic or rubber ring 32 which maintains the limbs in a desired circular position. The limbs 30 being flexible along with the flexible ring 32 when the filter cup 27 is pushed upward into the nasal passage, position the structure to conform to the individual wearer&#39;s nasal passages 26. The limbs 30 excluding the ring 32 are clad over the outside with a thin porous non-allergenic filtering material 35 suitable for breathing easily yet extracting dust particles, and adhered to said limbs by any conventional method. Located at the base of said common center cylinder, a small aperture 36 opens up within the cylinder with a larger aperture cavity 38 large enough to accommodate a round ball 33 located on the clip arms 28. When the ball 33 is pushed through said small aperture 36 into the larger aperture cavity 38 a peripheral ledge 37 captures said ball 33 in place and enables the filter cups 27 to tilt into position inside the nasal passages 26 and enables said filter cups to be disposed of when saturated with dust particles.