Patent ID: 8474078

Claim:
A method of manufacturing a bedding or seating cushion core, which cushion core is characterized by slow and gentle compression when a load is placed on the top of the cushion core, said method comprising: forming a continuous string of individually pocketed springs, each spring of which is contained within a pocket of fabric, said pocket of fabric being semi-impermeable to air flow through said fabric; assembling and securing said string of springs into a matrix of pocketed springs so as to create a cushion core having spaced top and bottom surfaces wherein cushioning material resides between adjacent strings of springs; said resulting 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.