The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 20, 1993
Filed:
Nov. 12, 1991
Peter W Bell, Troon, GB;
Johannes A Claessen, Leusden, NL;
Interface, Inc., La Grange, GA (US);
Abstract
A floor covering, such as a carpet or carpet tile, which comprises a primary backing sheet having a fibrous face wear surface and back surface and first and second backing layers and with a low density, resilient, non-elastomeric, closed cell polymeric foam layer, such as a thermoset, cross-linked polyethylene foam layer, positioned between and bonded to the first and second backing layers, optionally with a secondary backing layer bonded to the secondary bitumen backing layer. A method of producing a floor covering, such as a carpet tile, which comprises providing a primary backing sheet having a fibrous face wear surface and a back surface and bonding a first bitumen backing layer onto the primary backing sheet, bonding a low density, thermoset, polymeric foam layer to the first bitumen backing layer through a glass tissue to protect the polymeric foam layer and stabilize the composite, and bonding a second bitumen backing layer onto the polymeric foam layer. The second bitumen layer being beyond to a non-woven base wets through a glass tissue to protect the subfloor and stabilize the composite.