Zipper

Abstract

A zipper includes a slider head including a base; two side walls; two roofs each inwardly extending from a top of the side wall; a division wall on a longitudinal central line of the base; two grooves each defined among and by the roof, the side wall, and the base at the same side; a spring biased front mounting block on a top of the division wall and having a longitudinal central trough; a rear mounting member having a through hole; and a well between the front mounting block and the rear mounting member; a coupling including a hook at a rear end, and an intermediate recess, the coupling pivotably secured to the front mounting block; and a zipper pull releasably secured to the hook. The hook is disposed in the through hole to hold the zipper pull and the slide head in position.

What is claimed is: 
     
         1 . A zipper comprising:
 a slider head ( 10 ) including a base ( 11 ); two opposite side walls ( 12 ) on two sides of the base ( 11 ) respectively; two roofs ( 13 ) each inwardly extending from a top of the side wall ( 12 ); a division wall ( 14 ) on a longitudinal central line of the base ( 11 ); two grooves ( 15 ) each defined among and by the roof ( 13 ), the side wall ( 12 ), and the base ( 11 ) at the same side; a front mounting block ( 16 ) on a top of the division wall ( 14 ) and having a longitudinal central trough ( 161 ) and a receptacle ( 164 ) on a bottom of a front end of the longitudinal central trough ( 161 ); a rear mounting member ( 18 ) having a through hole ( 181 ) and two opposite side walls ( 182 ) on two sides of the through hole ( 181 ) respectively; and a well ( 17 ) between the front mounting block ( 16 ) and the rear mounting member ( 18 );   a biasing member ( 33 ) anchored in the receptacle ( 164 );   a coupling ( 20 ) partially disposed in the longitudinal central trough ( 161 ) and including a hook ( 21 ) at a rear end, an intermediate recess ( 22 ), and a through hole ( 24 ) near the recess ( 22 ), wherein the coupling ( 20 ) is pivotably secured to the front mounting block ( 16 ) and has a front end ( 23 ) urged against by the biasing member ( 33 ); and   a zipper pull ( 30 ) releasably secured to the hook ( 21 );   wherein the through hole ( 181 ) is a longitudinally deep, the hook ( 21 ) is disposed in the through hole ( 181 ) to hold the zipper pull ( 30 ) and the slide head ( 10 ) in position.   
     
     
         2 . The zipper of  claim 1 , wherein height of the side wall ( 182 ) is at least 60% of height of the hook ( 21 ). 
     
     
         3 . The zipper of  claim 1 , wherein the rear mounting member ( 18 ) further comprises a cut ( 183 ) on a front end of the through hole ( 181 ) for supporting the hook ( 21 ). 
     
     
         4 . The zipper of  claim 1 , wherein the zipper pull ( 30 ) includes a rectangular loop ( 31 ) loosely attached thereto, the loop ( 31 ) having a front fixing edge ( 32 ) disposed in the well ( 17 ); wherein the loop ( 31 ) is placed on an outer surface of the rear mounting member ( 18 ); and wherein the front fixing edge ( 32 ) urges against the intermediate recess ( 22 ) in an inoperative position of the zipper pull ( 30 ). 
     
     
         5 . The zipper of  claim 1 , wherein a front wall ( 184 ) of the through hole ( 181 ) is further protecting the hook ( 21 ) when operating.