Pocketed Spring Assembly

A bedding or seating product comprising:

• a pocketed spring assembly comprising a plurality of parallel strings of springs, each said string joined to an adjacent said string, each said string comprising first and second opposed plies of fabric and a plurality of pockets formed along a length of said string by transverse seams joining said first and second plies, and at least one spring positioned in each said pocket;
• each of said springs having upper and lower end turns and a plurality of central convolutions between said end turns, the convolutions decreasing in diameter and pitch from a middle portion of the spring towards at least one of the end turns,
• wherein each of said transverse seams forming said adjacent pockets of said string is cut or otherwise treated to create at least one divide enabling at least one end portion of the spring to compress without substantially compressing the middle portion of the spring.

A pocketed spring assembly for a bedding or seating product, said pocketed spring assembly comprising:

• a plurality of parallel strings of springs, each of the strings being joined to an adjacent string of springs, each of the strings comprising a plurality of interconnected pockets, each of the pockets containing at least one spring encased in fabric, the fabric being joined to itself along a longitudinal seam and having first and second opposed plies of fabric on opposite sides of the springs, the fabric of said first and second plies being joined by transverse seams,
• each of said springs having upper and lower end turns and a plurality of central convolutions between said end turns, the spring having two end portions and a middle portion between the end portions, the convolutions of the middle portion being greater in diameter and pitch than the convolutions of at least one of the end portions of the spring, wherein each of said transverse seams forming adjacent pockets of said string has a divide having one end located below an upper surface of said string so as to allow at least one end portion of the spring to compress upon being subjected to a load.

A pocketed spring assembly for a bedding or seating product, said pocketed spring assembly comprising:

• a plurality of parallel strings of springs, each of the strings being joined to an adjacent string of springs, each of the strings comprising a plurality of interconnected pockets, each of the pockets containing at least one spring encased in fabric, the fabric being joined to itself along a longitudinal seam and having first and second opposed plies of fabric on opposite sides of the springs, the fabric of said first and second plies being joined by transverse seams,
• each of said springs having two end portions and a middle portion between the end portions, the convolutions of the middle portion being greater in diameter and pitch than the convolutions of at least one of the end portions of the spring, wherein each of said transverse seams forming adjacent pockets of said string has a divide having an end located below an upper surface of said string so as to partially separate said adjacent pockets and enable an upper end portion of the spring to compress without substantially compressing the middle portion of the spring.