Innerspring Unit

Abstract

An improved manufacturing of innerspring unit for a mattress is disclosed comprises the innerspring rows and columns of coil springs connected to each other with helical wires. An independent suspension, namely the pocket spring, is installed at the center porting of the innerspring to provide additional suspension support to the heaviest part of the body, namely the hips portion, while in sleeping position.

1 . An improved innerspring unit for a mattress comprising:
 rows and columns of coil springs wherein said coil springs are arranged in a plurality of rows of coil springs that are mutually spaced apart at a predetermined distance   a plurality of independent resilient elements installed between two neighboring rows of coil springs, wherein height of said resilient element is just slightly lower than the height of the coil springs; and   a plurality of spring retainer elements each having resilient character to attach the coil springs wherein the spring retainer elements facilitate the attached coil springs to be compressed collectively.   
     
     
         2 . An improved innerspring unit for a mattress comprising:
 rows and columns of coil springs wherein said coil springs are arranged in a plurality of rows that are mutually spaced apart at a predetermined distance   a plurality of independent resilient elements installed between two neighboring rows of coil springs, wherein height of said resilient element is substantially the same height of the coil springs; and   a plurality of spring retainer elements each having resilient character to attach the coil springs wherein the spring retainer elements facilitate the attached coil springs to be compressed collectively.   
     
     
         3 . The improved innerspring unit according to  claim 1 , wherein said coil spring has a barrel section connecting a head portion to a base portion, said head portion and said base portion are larger than said barrel section. 
     
     
         4 . The improved innerspring unit according to  claim 3 , wherein said head and base portions of a two adjacent said coil springs are connected by the spring retainer element. 
     
     
         5 . The improved innerspring unit according to  claim 1 , wherein said resilient element is a pocket spring. 
     
     
         6 . The improved inner spring unit according to  claim 5 , wherein said pocket spring is installed in compressed state. 
     
     
         7 . The improved innerspring unit according to  claim 5 , wherein said array of pocket springs are sewed together to form an array of said pocket springs. 
     
     
         8 . The improved innerspring unit according to  claim 7 , wherein said array of pocket springs are in a linear configuration. 
     
     
         9 . The improved innerspring unit according to  claim 1 , wherein said pocket springs are located substantially at the center portion of a mattress that is made of said improved inner spring unit. 
     
     
         10 . The improved innerspring unit according to  claim 1 , wherein the spring retainer elements each are helical wires longitudinally extending substantially perpendicular to the rows of coil springs to attach the coil springs of different rows wherein the helical wires each are disposed in a passage formed between two neighboring rows of coil springs. 
     
     
         11 . The improved innerspring unit according to  claim 2 , wherein said coil spring has a barrel section connecting a head portion to a base portion, said head portion and said base portion are larger than said barrel section. 
     
     
         12 . The improved innerspring unit according to  claim 2 ,
 wherein said resilient element is a pocket spring.   
     
     
         13 . The improved innerspring unit according to  claim 2 , wherein said pocket springs are located substantially at the center portion of a mattress that is made of said improved inner spring unit. 
     
     
         14 . The improved innerspring unit according to  claim 2 , wherein the spring retainer elements each are helical wires longitudinally extending substantially perpendicular to the rows of coil springs to attach the coil springs of different rows wherein the helical wires each are disposed in a passage formed between two neighboring rows of coil springs