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:
Nov. 09, 2010
Filed:
May. 10, 2007
Jean-philippe Boure, Ribecourt, FR;
Julien Charlier, Chateau Thierry, FR;
Eloi Gaudry, Wolluwe St Lambert, BE;
Marc Rehfeld, Ezanville, FR;
Jean-Philippe Boure, Ribecourt, FR;
Julien Charlier, Chateau Thierry, FR;
Eloi Gaudry, Wolluwe St Lambert, BE;
Marc Rehfeld, Ezanville, FR;
Saint-Gobain Glass France, Courbevoie, FR;
Abstract
Laminated glazing () comprising a viscoelastic plastic insert () comprising at least two damping films () each having a loss factor tan δ greater than 0.6 and a shear modulus G' less than 2×10Pa over two temperature ranges tet trespectively, characterized in that the film which has, at a frequency of 200 Hz, the highest loss factor tan δ over a given temperature range included within the temperature range tor t, has an equivalent shear modulus G′less than the equivalent shear modulus or moduli of the other film or films, with where G′ is the shear modulus of the material constituting the film, e is the thickness of the film and ethe total thickness of the insert.