Lock member

Abstract

A lock member having coming-off preventive portions formed on opposite ends of a filament and having a letter “H” shape as a whole, wherein the coming-off preventive members are connected to a filament at locations shifted from central areas of the coming-off preventive members.

What is claimed is:  
     
         1 . A lock member having coming-off preventive portions formed on opposite ends of a filament and having a letter “H” shape as a whole, wherein said coming-off preventive members are connected to a filament at locations shifted from central areas of said coming-off preventive members.  
     
     
         2 . A lock member according to  claim 1 , wherein said coming-off preventive portions are connected to said filament at locations from about ⅓ to about ⅖ the length of said coming-off preventive portions and symmetrical with each other.  
     
     
         3 . A lock member according to  claim 1  or  2 , wherein a plurality of said lock members are continuously connected between said coming-off preventive portions thereby forming a runner-less assembly.  
     
     
         4 . A lock member according to  claim 1 ,  2  or  3 , wherein a width of said filament is dimensioned to be equal to or larger than a thickness thereof.  
     
     
         5 . A lock member according to  claim 3  or  4 , wherein a reinforcement portion disposed at a distal end of said filament is partly cut off.