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US 4,286,003 AGranted
Thin polyurethane foam backed rug
AssigneeMilliken Research Corporation
InventorsKenneth B. Higgins, Edgar H. Pittman
Life of this patent
Estimating the term…
Abstract
An area rug having an upper loop or pile surface and a secondary backing having a thin, open cell urethane backing adhered thereto to lessen the tendency of the area rug to crawl on the undersurface while maintaining total thickness no greater than 10% greater than the thickness of the primary rug.
Claims3
An area rug comprising:
- a carpet layer and a thin open-cell polyurethane material bonded to said carpet layer by an adhesive, said open-cell polyurethane material being of from 0.02 inches in thickness to 0.040 inches in thickness with a density of 1.75.+-.0.30 pounds per cubic foot, said open-cell polyurethane having 70-45 pores per square inch and when slit having a plurality of substantially semicircular openings in the side thereof away from the pile surface of said carpet layer, said thin open-cell polyurethane material having a thickness of no more than 10% of the thickness of said carpet layer.
Dependencies are inferred from the claim text.