Capped screw having a sealing configuration

Abstract

A capped screw includes a head disposed on top, a gasket engaged onto the screw and engaged with the bottom surface of the head, and a cap having a chamber for receiving the head of the screw and having a downwardly extended peripheral skirt which has a lower portion folded radially and inwardly to engage with the gasket and to secure the gasket to the head of the screw. The screw includes a peripheral flange extended radially outward from the head, the cap includes a radially extended peripheral flap, the peripheral skirt is extended downwardly from the peripheral flap.

I claim:  
     
         1 . A capped screw comprising: 
 a fastener body including a head provided on top thereof, said head including a bottom surface,    a gasket engaged onto said fastener body and engaged with said bottom surface of said head, and    a cap including a chamber formed therein for receiving said head of said fastener body, and including a downwardly extended peripheral skirt having a lower portion folded radially and inwardly to engage with said gasket and to secure said gasket to said head of said fastener body.    
     
     
         2 . The capped screw according to  claim 1 , wherein said fastener body includes a peripheral flange extended radially outward from said head and provided between said fastener body and said head, said cap includes a peripheral flap extended radially and outwardly therefrom for engaging onto said peripheral flange of said fastener body, said peripheral flap includes an outer peripheral portion having said peripheral skirt extended downwardly therefrom.  
     
     
         3 . The capped screw according to  claim 2 , wherein said peripheral skirt includes an inner diameter greater than an outer diameter of said peripheral flange, for forming a peripheral channel between said peripheral skirt and said peripheral flange of said fastener body.  
     
     
         4 . The capped screw according to  claim 3 , wherein said gasket includes a peripheral fence formed thereon and engaged in said peripheral channel provided between said peripheral skirt and said peripheral flange of said fastener body.