Systems and methods for opening a double knot

Abstract

An apparatus for opening a half double knot is disclosed. In embodiments, the apparatus includes a slider that includes a loop. A shoelace or drawstring is threaded through the loop. The shoelace or drawstring is tied in a bow knot. The slider is positioned adjacent to the bow knot. An end of the shoelace or drawstring and a bow of the bow knot opposite the end are tied in a half knot so that the half knot and the bow knot comprise a half double knot. The slider is moved toward the end to open the half double knot. In embodiments, the apparatus further includes a stopper that adheres to the end of the shoelace or drawstring and that prevents the slider from moving past the end of the shoelace or drawstring when the half double knot is opened.

1 . An apparatus for opening a half double knot, comprising:
 a slider that includes a loop, wherein an end of a shoelace or drawstring is threaded through the loop, wherein the shoelace or drawstring is tied in a bow knot, wherein the slider is positioned adjacent to the bow knot, wherein the end of the shoelace or drawstring and a bow of the bow knot opposite the end are tied in a half knot so that the half knot and the bow knot comprise a half double knot, and wherein the slider is moved toward the end to open the half double knot.   
     
     
         2 . The apparatus of  claim 1 , further comprising a stopper that adheres to the end of the shoelace or drawstring and that prevents the slider from moving past the end of the shoelace or drawstring when the half double knot is opened. 
     
     
         3 . The apparatus of  claim 1 , further comprising a second slider that is threaded through a second end of the shoelace or drawstring and positioned adjacent to the bow knot after the bow knot is tied, wherein the second end of the shoelace or drawstring and a second bow of the bow knot opposite the second end are tied in a second half knot so that the second half knot and the bow knot comprise a second half double knot, and wherein the second slider is moved toward the second end to open the second half double knot. 
     
     
         4 . The apparatus of  claim 3 , further comprising a second stopper that adheres to the second end of the shoelace or drawstring and that prevents the second slider from moving past the second end of the shoelace or drawstring when the second half double knot is opened. 
     
     
         5 . The apparatus of  claim 2 , wherein the stopper comprises an anglet on the shoelace or drawstring, wherein the anglet is crimped to the shoelace or drawstring. 
     
     
         6 . The apparatus of  claim 2 , wherein the stopper comprises an anglet on the shoelace or drawstring, wherein the anglet is heat shrunk to the shoelace or drawstring. 
     
     
         7 . The apparatus of  claim 1 , wherein the slider comprises a material that includes one or more of metal, wire, plastic, wood, cloth, string, lace, rubber, foam, neoprene, silicon, leather, glass, cork, rock, gems, quartz, stone, semiprecious stone, tape, Velcro, and woven materials. 
     
     
         8 . The apparatus of  claim 2 , wherein the stopper comprises a material that includes one or more of metal, wire, plastic, wood, cloth, string, lace, rubber, foam, neoprene, silicon, leather, glass, cork, rock, gems, quartz, stone, semiprecious stone, tape, Velcro, and woven materials. 
     
     
         9 . The apparatus of  claim 2 , wherein the stopper comprises a temporary stopper. 
     
     
         10 . The apparatus of  claim 2 , wherein the stopper comprises a permanent stopper. 
     
     
         11 . The apparatus of  claim 2 , wherein the stopper comprises a clamp on stopper on stopper. 
     
     
         12 . The apparatus of  claim 2 , wherein the stopper comprises a clamp over stopper. 
     
     
         13 . The apparatus of  claim 2 , wherein the stopper is formed by injecting expanding materials into an interior of the end of the shoelace or drawstring to create a scoot stopper. 
     
     
         14 . The apparatus of  claim 2 , wherein the stopper is formed by pinching two parts of the shoelace or drawstring. 
     
     
         15 . The apparatus of  claim 2 , wherein the stopper is formed by inserting a wire with zig zaggy shape or bends at the end of the shoelace or drawstring. 
     
     
         16 . The apparatus of  claim 2 , wherein the stopper comprises a stopper with teeth or counter pointing restraints. 
     
     
         17 . The apparatus of  claim 2 , wherein the stopper comprises a flex material that slides over the shoelace or drawstring. 
     
     
         18 . The apparatus of  claim 2 , wherein the stopper comprises a screw cap screwed onto the end of the shoelace or drawstring. 
     
     
         19 . The apparatus of  claim 2 , wherein the stopper is formed by dipping the end of the shoelace or drawstring into a goop that hardens when exposed to air. 
     
     
         20 . A method for opening a half double knot, comprising:
 tying a bow knot in a shoelace or drawstring;   threading an end of the bow knot through a loop of a slider connected to the loop;   sliding the slider to a location adjacent to the bow knot;   tying the end and a bow opposite the end in a half knot so that the half knot and the bow knot comprise a half double knot; and   moving the slider toward the end to open the half double knot.