Multilayered pocketed bedding or seating product

Abstract

A multilayered bedding or seating product comprising a spring core made up of an upper layer and a lower layer of pocketed coil springs. Each layer comprises a plurality of parallel strings of springs joined to each other. Each of the strings of springs comprises a row of interconnected pocketed coil springs. The strings of springs of the upper and lower layers may be secured to at least one scrim sheet therebetween.

I claim:  
     
         1 . A bedding or seating product comprising: 
 a spring core having an upper layer and a lower layer, each of said layers comprising a separate spring core assembly comprising a plurality of parallel strings of springs, each of said strings of springs being secured to at least one adjacent string of springs and comprising a row of interconnected pocketed coil springs,    said layers being joined together, one on top of the other, the springs of each layer being located in axial alignment with the springs of the other layer, and    an upholstered covering surrounding said spring core.    
     
     
         2 . A bedding or seating product comprising: 
 a spring core having an upper layer and a lower layer, each of said layers comprising a separate spring core assembly comprising a plurality of parallel strings of springs, each of said strings of springs being secured to at least one adjacent string of springs and comprising a row of interconnected pocketed coil springs,    said layers being joined together, one on top of the other, the springs of each layer being located in axial alignment with the springs of the other layer.    
     
     
         3 . The bedding or seating product of  claim 2  wherein each of said strings of springs made with one sheet of fabric.  
     
     
         4 . The bedding or seating product of  claim 2  wherein said product has a longitudinal dimension and a transverse dimension, said longitudinal dimension being greater than said transverse dimension, said strings of springs extending longitudinally.  
     
     
         5 . The bedding or seating product of  claim 2  wherein said product has a longitudinal dimension and a transverse dimension, said longitudinal dimension being greater than said transverse dimension, said strings of springs extending transversely.  
     
     
         6 . The bedding or seating product of  claim 2  further comprising at least one border wire secured to select outermost pocketed coil springs.  
     
     
         7 . The bedding or seating product of  claim 2  wherein said upper layer is adhesively secured to said lower layer.  
     
     
         8 . The product of  claim 2  wherein said coil springs of said upper layer have different characteristics than the characteristics of the coil springs of the lower layer.  
     
     
         9 . The product of  claim 2  wherein the coil springs of said upper layer are less firm than the coil springs of the lower layer.  
     
     
         10 . A method of manufacturing a spring product which comprises: 
 forming a first plurality of coil springs,    pocketing that first plurality of coil springs in a first continuous string of spring-containing fabric pockets,    cutting that first continuous string of spring-containing fabric pockets into a first series of multiple strings of spring-containing fabric pockets,    assembling and permanently securing together the first series of strings of spring-containing fabric pockets to create a first spring assembly,    forming a second plurality of coil springs,    pocketing that second plurality of coil springs in a second continuous string of spring-containing fabric pockets,    cutting the second continuous string of spring-containing fabric pockets into a second series of multiple strings of spring-containing fabric pockets,    assembling and permanently securing together the second series of spring-containing fabric pockets to create a second spring assembly,    placing the first spring assembly atop the second spring assembly and permanently securing these two assemblies together to create a spring product.    
     
     
         11 . The method of  claim 10  wherein the first series of strings of pocketed springs are permanently secured together by gluing and the second series of pocketed springs are secured together by gluing.  
     
     
         12 . The method of  claim 10  wherein the first spring assembly is permanently secured atop the second spring assembly by gluing.  
     
     
         13 . The method of  claim 10  wherein the first spring assembly is placed atop the second spring assembly with the axes of the springs of the first spring assembly in colinear alignment with the axes of the springs of the second spring assembly.  
     
     
         14 . A bedding or seating product comprising: 
 a spring core having an upper layer and a lower layer, each of said layers comprising a separate spring core assembly comprising a plurality of parallel strings of springs, each of said string of springs comprising a row of interconnected pocketed coil springs, said strings of springs of said upper layer being secured to at least one adjacent string of springs,    said strings of springs of said lower and upper layers being secured to at least one scrim sheet located between said layers such that said spring core assemblies are joined together, one on top of the other, and    an upholstered covering surrounding said spring core.    
     
     
         15 . A bedding or seating product comprising: 
 a spring core having an upper layer and a lower layer, each of said layers comprising a separate spring core assembly comprising a plurality of parallel strings of springs, each of said string of springs comprising a row of interconnected pocketed coil springs, each of said strings of springs of said upper layer being secured to at least one adjacent string of springs,    said strings of springs of said lower and upper layers being secured to at least one scrim sheet located between said layers such that said spring core assemblies are joined together, one on top of the other.    
     
     
         16 . A bedding or seating product comprising: 
 a spring core having an upper layer and a lower layer, said upper layer of said spring core comprising an upper spring core assembly comprising a plurality of parallel strings of springs, each of said string of springs comprising a row of interconnected pocketed coil springs, each of said strings of springs of said upper layer being secured to at least one adjacent string of springs in said upper layer,    said lower layer of said spring core comprising an lower spring core assembly comprising plurality of parallel strings of springs, each of said string of springs comprising a row of interconnected pocketed coil springs, each of said strings of springs of said lower layer being secured to upper and lower scrim sheets, said upper scrim sheet being located between said layers and said lower scrim sheet being located below said lower layer, said strings of springs of said upper and lower layers being secured to said upper scrim sheet such that said spring core assemblies are joined together, one on top of the other, and    an upholstered covering surrounding said spring core.    
     
     
         17 . A bedding or seating product comprising: 
 a spring core having an upper layer and a lower layer, said upper layer of said spring core comprising an upper spring core assembly comprising a plurality of parallel strings of springs, each of said string of springs comprising a row of interconnected pocketed coil springs, each of said strings of springs of said upper layer being secured to at least one adjacent string of springs in said upper layer,    said lower layer of said spring core comprising an lower spring core assembly comprising plurality of parallel strings of springs, each of said string of springs comprising a row of interconnected pocketed coil springs, each of said strings of springs of said lower layer being secured to upper and lower scrim sheets, said upper scrim sheet being located between said layers and said lower scrim sheet being located below said lower layer, said strings of springs of said upper and lower layers being secured to said upper scrim sheet such that said spring core assemblies are joined together, one on top of the other.    
     
     
         18 . A method of manufacturing a spring product which comprises: 
 forming a plurality of upper strings of springs,    joining said upper strings of springs into an upper spring core assembly,    forming a plurality of lower strings of springs,    joining said lower strings of springs to at least one scrim sheet, and    placing the upper spring core assembly atop the lower spring core assembly and permanently securing these two assemblies together to create a spring product.