Back to results
US 8,136,187 B2Granted
Slow acting pocketed spring core and method of manufacturing same
AssigneeL&P Property Management Company
InventorsNiels S. Mossbeck, Terry W. Moser
Life of this patent
Estimating the term…
Abstract
Spring cushions (10) having slow-acting pocketed spring cores (12) characterized by the individual springs of the cores (12) being pocketed within semi-impermeable fabric material and a method of making such pocketed spring cores (12).
Claims22
A bedding or seating cushion core, comprising:
- a matrix of interconnected pocketed springs, each spring of which is contained within a pocket, said pocket comprising multiple layers of fabric and being semi-impermeable to air flow through said pocket, opposed plies of fabric being joined by a sinusoidal welded seam;
- 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 pockets within which the pocketed springs are contained.
A bedding or seating cushion core, comprising:
- a matrix of interconnected pocketed springs, each spring of which is contained within a pocket of fabric, which pocket of fabric is semi-impermeable to air flow through said fabric due to at least one hole through the pocket of fabric, said pocketed springs being arranged in strings of springs, each of said strings of springs having a longitudinal sinusoidal welded seam;
- 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 pocket of fabric within which the springs are contained.
A bedding or seating cushion core, comprising:
- a matrix of interconnected strings of pocketed springs, each spring of which is contained within a pocket of fabric, which pocket of fabric is semi-impermeable to air flow through said fabric due to at least one hole through multiple layers of fabric including at least one layer of polypropylene non-woven fabric material;
- 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 pocket of fabric within which the springs are contained.
Dependencies are inferred from the claim text.