# US 12,005,762 B2 · Vehicle glazing with improved stiffness > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,005,762 B2 - Document ID: US12005762B2 - Status: Granted - Kind: B2 - Application number: 16/958,699 - Filed: 2018-12-31 - Published: 2020-11-05 - Granted: 2024-06-11 - Earliest claimed: 2017-12-31 - Assignees: AGP America S.A. - Applicants: AGP America S.A. - Inventors: Mario Arturo Mannheim Astete; Juan Pablo Suárez; Jean-Marie Le Ny; Guillaume Géranton - Web page: https://patentgrep.com/patent/US12005762B2 ## CPC - B60J 1/008: {of special shape, e.g. beveled edges, holes for attachment, bent windows, peculiar curvatures such as when being integrally formed with roof, door, etc.} - B32B 3/30: characterised by a layer formed with recesses or projections, e.g. {hollows, grooves, protuberances, ribs (apertured layer B32B3/266; layer with cavities or internal voids B32B3/26)} - B32B 17/10036: {comprising two outer glass sheets} - B32B 17/10082: {Properties of the bulk of a glass sheet} - B32B 17/10091: {thermally hardened} - B32B 17/10889: {shaping the sheets, e.g. by using a mould (B32B17/10816 takes precedence)} - B60J 1/001: {Double glazing for vehicles} - C03B 23/0302: {between opposing full-face shaping moulds} - B60J: WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES (fastening, suspending, closing, or opening of such devices E05) - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - C03B: MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES ## Abstract A vehicle glazing with improved stiffness having a modified structure which comprises at least one stiffening portion, wherein each portion is a recessed portion and/or a raised portion, and wherein each portion has at least a portion of its contour being sharply curved. ## Claims ### Claim 1 A laminated vehicle glazing with two glass layers, said vehicle glazing, comprising: at least one stiffening portion, which modifies the geometry of the two glass layers, each at least one stiffening portion corresponding to a bent section of a surface having at least a portion of its contour being curved; a plastic interlayer disposed between the two glass layers; wherein the bent section, in a planar view thereof, has a geometric shape selected from the group consisting of a circle, an oval, an ellipse, a polygon and a polygon with rounded corners; wherein each portion of the at least one stiffening portion is selected from the group consisting of a recessed portion and a raised portion; wherein the curved portion comprises a first bent portion described by a first radius and a second bent portion described by a second radius; wherein the first radius and the second radius are no more than 50 mm; wherein each stiffening portion extends across a dimension of the glass; and wherein each at least one stiffening portion has a distance between its two furthest points larger than one third of the length of the shortest side of the rectangle's side that subscribes the vehicle glazing. ### Claim 2 (depends on 1) The laminated vehicle glazing of claim 1, wherein said bent section has its whole contour curved. ### Claim 3 (depends on 1) The vehicle glazing with improved stiffness of claim 1, wherein said bent section has at least one sharply curved interior portion. ### Claim 4 (depends on 1) The laminated vehicle glazing of claim 1, wherein the at least one stiffening portion is at least two stiffening portions; and wherein each portion is spaced apart from each other. ### Claim 5 (depends on 1) The laminated vehicle glazing of claim 1, wherein each portion of the at least one stiffening portion is further selected from the group consisting of a recessed portion followed by a raised portion and a raised portion followed by a recessed portion. ### Claim 6 (depends on 1) The laminated vehicle glazing of claim 1, wherein at least one of the two glass layers is selected from the group consisting of soda-lime, borosilicate and aluminosilicate. ### Claim 7 (depends on 1) The laminated vehicle glazing of claim 1, wherein the glazing is a curved vehicle glazing. ### Claim 8 (depends on 1) The laminated vehicle glazing of claim 1, wherein the glazing is the glazing of a roof window. ### Claim 9 (depends on 8) The laminated vehicle glazing of claim 8, wherein the roof window is a moveable roof window. ### Claim 10 (depends on 1) The laminated vehicle glazing with improved stiffness of claim 1, wherein the glazing is a tempered monolithic glazing having a thickness from 2.5 mm to 5 mm. ### Claim 11 (depends on 1) The vehicle glazing with improved stiffness of claim 1, wherein the glazing is a laminated glazing comprising at least one glass sheet and at least one plastic interlayer, said at least one plastic interlayer having a shear modulus from 0.4 MPa to 500 MPa. ### Claim 12 (depends on 11) The vehicle glazing with improved stiffness of claim 11, wherein each glass sheet of said at least one glass sheet has a thickness from 0.5 mm to 5 mm. ### Claim 13 (depends on 11) The vehicle glazing with improved stiffness of claim 11, wherein the laminated glazing has a height from 500 mm to 2000 mm, a width from 600 mm to 1500 mm and a bending depth less than 400 mm. ### Claim 14 (depends on 1) The laminated vehicle glazing of claim 1, wherein the at least two glass layers have different thickness. ### Claim 15 (depends on 14) The laminated vehicle glazing of claim 14, wherein the two glass layers, outer layer and inner layer have a ratio of thickness between outer layer and inner layer is ranging from about 1 to about 8. ### Claim 16 (depends on 15) The laminated vehicle glazing of claim 15, wherein the outer layer is a soda-lime glass layer having a thickness from 1.6 mm to 2.5 mm, and the inner layer is a semi-tempered or annealed soda-lime glass layer having a thickness from 1 mm to 1.6 mm. ### Claim 17 (depends on 8) The laminated vehicle glazing of claim 8, wherein the roof window is fixed on at least two edges to a vehicle body. ### Claim 18 (depends on 17) The laminated vehicle glazing of claim 17, wherein said at least two edges are two edges, and wherein the at least one stiffening portion is extended perpendicularly to said two edges. ### Claim 19 (depends on 1) The laminated vehicle glazing of claim 1, wherein the first radius and second radius are no more than 20 mm. ### Claim 20 (depends on 1) The laminated vehicle glazing of claim 1, wherein the at least one stiffening portion extends from edge to edge across a dimension of the glazing surface. ### Claim 21 (depends on 1) The laminated vehicle glazing of claim 1, wherein each stiffening portion is spaced apart from each other, when several stiffening portions are included in the glazing.