A knot securing device of particular benefit in securing shoelace knots made from a flexible material with a region having hook elements, a region having loop elements and a pair of apertures in the flexible material for allowing the open ends of a shoelace to pass through from one surface of the...http://www.google.es/patents/US5778500?utm_source=gb-gplus-sharePatente US5778500 - Knot securing device
