Spring core

Abstract

A spring core includes a plurality of rows of springs which are disposed parallel to each other and each of which includes a plurality of individual springs connected to each other. The spring core is designed in such a way that each spring is in the form of a ring which is disposed on edge in the loading direction and made of an elastically deformable wire having an inwardly directed notch in the progression of the contour.

1 .- 10 . (canceled) 
     
     
         11 . A spring core, comprising a plurality of springs disposed to define rows of springs in parallel relationship, with the springs of each of the rows being connected to each other, each spring being formed as a ring which is disposed on edge in a loading direction and made of elastically deformable wire having an inwardly directed notch in a progression of a contour. 
     
     
         12 . The spring core of  claim 11 , wherein the contour of the spring is formed as a circular ring section, said notch adjoining the circular ring section. 
     
     
         13 . The spring core of  claim 11 , wherein the notch is limited by legs which enclose an angle of ≦90°. 
     
     
         14 . The spring core of  claim 12 , wherein the notch defines an apex which is disposed in a region of an imaginary central point of the circular ring section or outside thereof. 
     
     
         15 . The spring core of  claim 12 , wherein the notch defines an apex which is disposed in a region beyond an imaginary central point of the circular ring section. 
     
     
         16 . The spring core of  claim 11 , wherein the springs in one of the rows of springs are twisted relative to the springs of another one of the rows of springs with respect to a position of the notches. 
     
     
         17 . The spring core of  claim 11 , wherein the springs of one of the rows of springs are twisted in relation to other springs of said one of the rows of springs. 
     
     
         18 . The spring core of  claim 11 , further comprising at least two rods configured to connect the springs of one of the rows to each other, said at least two rods being locked with respect to each other at a distance. 
     
     
         19 . The spring core of  claim 18 , wherein the springs of the one of the rows of springs are connected by the at least two rods in a connecting region which is arranged in an indentation of the springs. 
     
     
         20 . The spring core of  claim 11 , wherein the springs of one of the rows of springs engage in intermediate spaces of the springs of at least one adjoining one of the rows of springs. 
     
     
         21 . The spring core of  claim 11 , wherein the springs of one of the rows of springs have a wire thickness which is different from a wire thickness of the springs of another one of the rows of springs.