Patent ID: 6446311
Filing Date: 2002-09-10
Classification: G09F,Y10T

Abstract:
In a loop pin assembly in which a plurality of loop pins, each comprising a flexible filament, an insertion head portion provided on one end portion of said filament and having an appropriate mating part and a socket portion provided on the other end of said filament and having a hole for irreversibly passing said insertion head therethrough, said filament, said insertion head portion and said socket portion being integrally formed into one body, are arranged in parallel with each other through connecting bars to which a part of each of said loop pins is detachably connected thereto, said loop pin being configured so that said insertion head portion and said socket portion are capable of being connected to each other between said mating part formed on an edge portion of said insertion head portion and provided in a vicinity of a connecting portion formed between said insertion head portion and said filament, and a step-like portion provided within said through hole formed within said socket portion, and further wherein said loop pin is made of polypropylene and a pitch formed along the plurality of said loop pins parallely arranged to each other is set at less than 3.5 mm, preferably less than 3.1 mm, a break strength of said connected portion when said insertion head portion and said socket portion are mated to each other, being at least 5.0 kg.