Protective system for airport runway and taxiway light fixtures

Abstract

A system for the protection of airport runway light fixtures and markers is disposed at or near the edge of aircraft runways, taxiway and airport signs. The system includes a thin flexible mat having an axial opening proportioned to enable placement above an elevated in-ground concrete base of a runway light fixture, and peripherally disposed apertures within the mat. The system further includes several anchors for the mat, each of which comprise a planar head, and means for penetration and engagement of earth upon which the mat is positioned. The penetration and engagement elements of each anchor integrally and rigidly depend from a lower surface of the planar head at a central axis. A greatest transverse cross-section of the engagement element is proportioned for complemental insertion within the peripheral apertures of the convex mat. The planar heads of the anchors each engage the mat when the engagement means have fully penetrated the earth upon which the mat is to be secured. The upper surface of the planar head of each anchor preferably includes an axially disposed nut, Allen head screw or the like proportioned for complemental engagement with the drive element of a power tool to effect rotation of the anchor into the earth.

I claim:  
     
         1 . A system for the protection of an airport runway light fixture including a metallic support secured within an elevated, above ground level substantially circular concrete base, the system comprising: 
 (a) a flat flexible mat including an axial opening about a central axis thereof, having a radius substantially equal to a radius of said concrete base, said mat also having a plurality of peripherally located apertures; and    (b) a plurality of anchors for said mat, corresponding in number to the number of said apertures, each of said anchors comprising a planar head and, integral therewith, means for penetration and engagement of the ground upon which said mat is to be positioned, said penetration means proportioned for complemental insertion through said peripheral apertures of said mat, wherein said heads of said anchors engage said mat when said penetration means have fully penetrated into the earth upon which said mat is to be secured.    
     
     
         2 . The system as recited in  claim 1 , in which at least one radius of a periphery of said mat defines a dimension of about 2.0 to about 2.5 times a ground level radius or average radial dimension of said concrete base.  
     
     
         3 . The system as recited in  claim 1 , in which at least one outer radius of said mat defines a dimension of about 4 to about 5 times a radius of said metallic support.  
     
     
         4 . The system as recited in  claim 2 , in which at least one radius of said mat defines a dimension of about 4 to about 5 times the radius of said metallic support.  
     
     
         5 . The system as recited in  claim 2 , in which an upper surface of said planar head of said anchor comprises an axially disposed element proportioned for complemental engagement with a drive head of power tool to thereby effect rotation of said anchor into the earth.  
     
     
         6 . The system as recited in  claim 5 , in which said penetration means of said anchor comprises an elongate spiral having a pointed tip thereof.  
     
     
         7 . The system as recited in  claim 1 , in which said penetration means comprises a V-shaped element having a pointed distal end.  
     
     
         8 . The system as recited in  claim 5 , in which said anchor defines a length of about one foot.  
     
     
         9 . The system as recited in  claim 2 , in which said planar head of said anchor defines a circle having a radius in a range between about two to about four inches.  
     
     
         10 . The system as recited in  claim 9 , in which said mat defines a circle.  
     
     
         11 . The system as recited in  claim 9 , in which said mat defines an ellipse.  
     
     
         12 . The system as recited in  claim 1 , in which said mat includes therein a threaded recess for the accommodation of a snow pole.  
     
     
         13 . The system as recited in  claim 2 , in which said mat defines a thickness of between about 0.5 and about 1.5 inches.  
     
     
         14 . The system as recited in  claim 2 , in which said mat is formed of a rubber or elastomeric material.  
     
     
         15 . The system as recited in  claim 2 , in which said concrete base is circular at ground level.  
     
     
         16 . The system as recited in  claim 2 , in which said concrete base is square at ground level.