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:
Mar. 29, 1977
Filed:
May. 13, 1975
Applicant:
Inventors:
Bruno Koschatzky, Milan, IT;
Attilio Angioletti, Milan, IT;
Assignee:
Industrie Pirelli S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428310 ; 428425 ;
Abstract
A molded cellular polyurethane upholstery article having a flexible inner cellular polyurethane core, a microporous polyurethane skin with predominantly closed cells is provided with a fabric reinforcing material between the skin and core over at least the load bearing portions of the article to improve its resistance to rupture, the fabric being a net having a resistance to perforation as measured by the sphere method, UNI Standard No. 5421-64 of not smaller than 8 kg, and a thickness comprised between 20 and 100 meshes per dm.