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US 9,789,666 B2Granted
Bullet resistant laminated glass
AssigneeSchott AG
InventorsGerrit Panzner, Ruediger Freitag, Georg Neupert, Gerhard Lautenschlaeger
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AssigneeSchott AG
InventorsGerrit Panzner, Ruediger Freitag, Georg Neupert, Gerhard Lautenschlaeger
Estimating the term…
The present disclosure relates to bullet-resistant laminated glass having at least three sheets of glass. One of the sheets of glass faces the impact side as a cover sheet, and one sheet of glass is formed as a closure sheet facing away from the impact side. Between the cover sheet and the closure sheet, one or more intermediate sheets are disposed, these sheets of glass being connected to each other by composite layers. The composite layers are formed by flexible and dimensionally unstable films and/or cast compounds. The composite layers do not consist of polycarbonate, polyurethane or polymethylmethacrylate. In order to prevent splinter output on the rear side, this glass composite has a closure sheet on the rear side consisting of thermally or chemically prestressed glass.
A bullet-resistant laminated glass having at least three sheets of glass, wherein one of the glass sheets faces the impact side (A) as a cover sheet, and one glass sheet that faces away from the impact side (A) is formed as a closure sheet, wherein one or more intermediate sheets are disposed between the cover sheet and the closure sheet, wherein the glass sheets are connected to one another by composite layers, which are formed by flexible and dimensionally unstable films and/or cast compounds, and wherein the closure sheet is formed as a thermally or chemically pre-stressed glass sheet, wherein the cover sheet and the one or more intermediate sheets are composed of non-pre-stressed glass, wherein the thermally pre-stressed closure sheet is selected and has the ratio (x) between the thickness of the closure sheet and the tensile bending strength of the closure sheet in the range between 1:15≦x≦1:50, or wherein the chemically pre-stressed closure sheet is selected and has the ratio (x) between the thickness of the closure sheet and a tensile bending strength of the closure sheet in the range between 1:50≦x≦1:1000, and wherein the closure sheet has a thickness in the range of 4 to 10 mm.
A bullet-resistant laminated glass having at least three sheets of glass, wherein one of the glass sheets faces the impact side (A) as a cover sheet, and one glass sheet that faces away from the impact side (A) is formed as a closure sheet, wherein one or more intermediate sheets are disposed between the cover sheet and the closure sheet, wherein the glass sheets are connected to one another by composite layers that are not composed of polycarbonate, polyurethane or polymethyl methacrylate, and wherein the closure sheet is formed as a thermally or chemically pre-stressed glass sheet, wherein the cover sheet is composed of non-pre-stressed glass and wherein the pre-stressed glass sheet extends at maximum up to half the total thickness of the laminated glass, wherein the thermally pre-stressed closure sheet is selected and has the ratio (x) between the thickness of the closure sheet and the tensile bending strength of the closure sheet in the range between 1:15≦x≦1:50, or wherein the chemically pre-stressed closure sheet is selected and has the ratio (x) between the thickness of the closure sheet and a tensile bending strength of the closure sheet in the range between 1:50≦x≦1:1000, and wherein the closure sheet has a thickness in the range of 4 to 10 mm.
Dependencies are inferred from the claim text.