Slow acting pocketed spring core
Spring cushions having slow-acting pocketed spring cores characterized by the individual springs of the cores being sealingly pocketed within semi-impermeable fabric material and a method of making such pocketed spring cores.
1. A bedding or seating cushion core, comprising:
a matrix of interconnected pocketed springs, each spring of which is contained within a sealed pocket of fabric, which fabric is semi-impermeable to air flow through said fabric;
said matrix creating a cushion core having spaced top and bottom surfaces;
said cushion core being characterized, when a load is placed upon the top surface of the cushion core, by the rate of deflection of the cushion core being retarded by the rate at which air escapes through said semi-impermeable fabric within which the pocketed springs are contained.
2. The cushion core of claim 1 wherein said fabric is a coated polypropylene point bonded non-woven fabric material.
3. A bedding or seating cushion core, comprising:
a matrix of interconnected pocketed springs, each spring of which is contained within a sealed pocket of fabric, which fabric is semi-impermeable to air flow through said fabric;
said matrix creating a cushion core having spaced top and bottom surfaces;
said cushion core being characterized, when a load is placed upon the top surface of the cushion core and then removed, by the rate of return of the cushion core to its original height being retarded by the rate at which air escapes through said semi-impermeable fabric within which the pocketed springs are contained.
4. The cushion core of claim 3 wherein said fabric is a coated polypropylene point bonded non-woven fabric material.