# US 10,864,803 B2 · Glass plate, laminated glass, and windshield > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,864,803 B2 - Document ID: US10864803B2 - Status: Granted - Kind: B2 - Application number: 16/428,037 - Filed: 2019-05-31 - Published: 2019-09-19 - Granted: 2020-12-15 - Earliest claimed: 2016-12-02 - Assignees: AGC Inc. - Applicants: AGC Inc. - Inventors: Keiji Notsu - Web page: https://patentgrep.com/patent/US10864803B2 ## CPC - B60J 1/02: arranged at the vehicle front {, e.g. structure of the glazing, mounting of the glazing (on windscreen mounted antenna wire H01Q1/1271)} - B32B 3/02: characterised by features of form at particular places, e.g. in edge regions {(non-uniform thickness B32B3/263)} - B32B 3/08: characterised by added members at particular parts {(layer formed of separate pieces of material which are juxtaposed side-by-side B32B3/14, B32B3/18)} - B32B 3/263: {characterised by a layer having non-uniform thickness} - B32B 17/10036: {comprising two outer glass sheets} - B32B 17/10155: {Edge treatment or chamfering} - B32B 17/10165: {Functional features of the laminated safety glass or glazing} - B32B 17/10302: {Edge sealing} - B32B 17/10761: {containing vinyl acetal} - B32B 27/306: {comprising vinyl acetate or vinyl alcohol (co)polymers} - 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 2250/03: 3 layers - B32B 2250/40: Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA - B32B 2307/102: Insulating - B32B 2307/732: Dimensional properties - B32B 2605/006: Transparent parts other than made from inorganic glass, e.g. polycarbonate glazings - B60J 1/00: Windows; Windscreens; Accessories therefor (B60J10/00 takes precedence; air curtains instead of windows B60J9/04 {; sealing strips for windshields B60J10/70; sealing sash guides for sliding window panes B60J10/74; glass partitions inside vehicles to protect occupants against personal attack B60R21/12}) - 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 ## Abstract This glass plate has: a first main surface and a second main surface; and a first end surface and a second end surface that abut on the first main surface and the second main surface, respectively, wherein the glass plate has a wedge-shaped cross-sectional shape in which the thickness on the first end surface side is less than that on the second end surface side. The glass plate has: a first chamfered section which includes a first apical end having a curved surface shape at the first end surface; and a second chamfered section which includes a second apical end having a curved surface shape at the second end surface, and the first apical end and the second apical end are formed in the same shape. ## Claims ### Claim 1 A glass plate, comprising: a wedge shape glass plate having a first main surface, a second main surface on an opposite side with respect to the first main surface, a first end surface at a first end of the first and second main surfaces, and a second end surface at a second end of the first and second main surfaces on an opposite end with respect to the first end such that the wedge shape glass plate has a thickness on a first end surface side that is thinner than a thickness on a second end surface side, wherein the first end surface has a first chamfered portion including a first tip portion having a curved surface shape, the second end surface has a second chamfered portion including a second tip portion having the curved surface shape such that the curved surface shape of the second tip portion is formed to have the curved surface shape of the first tip portion. ### Claim 2 (depends on 1) The glass plate according to claim 1, wherein the curved surface shape of each of the first and second tip portions has an arc shape having a curvature radius that is not larger than ½ of the thickness on the first end surface side. ### Claim 3 (depends on 2) The glass plate according to claim 2, wherein the first chamfered portion includes first outside portions each having a flat shape or a curved surface shape between the first tip portion and each of the first main surface and the second main surface, and the second chamfered portion includes second outside portions each having a flat shape or a curved surface shape between the second tip portion and each of the first main surface and the second main surface. ### Claim 4 (depends on 1) The glass plate according to claim 1, wherein the curved surface shape of each of the first and second tip portions has an arc shape having a curvature radius that is larger than ½ of the thickness on the first end surface side. ### Claim 5 (depends on 4) The glass plate according to claim 4, wherein the first chamfered portion includes first outside portions each having a flat shape or a curved surface shape between the first tip portion and each of the first main surface and the second main surface, and the second chamfered portion includes second outside portions each having a flat shape or a curved surface shape between the second tip portion and each of the first main surface and the second main surface. ### Claim 6 (depends on 5) The glass plate according to claim 5, wherein the first end surface includes first transition portions between the first tip portion and the first outside portions respectively such that each of the first transition portions has a curved surface shape, and the second end surface includes second transition portions between the second tip portion and the second outside portions respectively such that each of the second transition portions has a curved surface shape. ### Claim 7 (depends on 3) The glass plate according to claim 3, wherein each of the second outside portions has a length larger than a length of each of the first outside portions. ### Claim 8 (depends on 7) The glass plate according to claim 7, wherein the first outside portions and the second outside portions have inclination angles that are equal to each other with respect to the first main surface and the second main surface. ### Claim 9 (depends on 1) The glass plate according to claim 1, wherein the thickness on the first end surface side is 0.5 mm or more and 2.35 mm or less, and the thickness on the second end surface side is 0.6 mm or more and 3.35 mm or less. ### Claim 10 (depends on 1) The glass plate according to claim 1, wherein the wedge shape glass plate has a wedge angle of 0.1 mrad or more and 0.7 mrad or less. ### Claim 11 (depends on 1) A laminated glass, comprising: a plurality of glass plates; and at least one intermediate film bonding the glass plates, wherein at least one of the glass plates is the glass plate of claim 1. ### Claim 12 (depends on 11) The laminated glass according to claim 11, wherein the intermediate film has a constant thickness. ### Claim 13 (depends on 12) A windshield, comprising: the laminated glass of claim 12; and a resin frame attached to a peripheral edge portion of the laminated glass. ### Claim 14 (depends on 1) The glass plate according to claim 1, wherein the thickness on the first end surface side is 0.5 mm or more and 2.35 mm or less, the thickness on the second end surface side is 0.6 mm or more and 3.35 mm or less, and the wedge shape glass plate has a wedge angle of 0.1 mrad or more and 0.7 mrad or less. ### Claim 15 (depends on 1) The glass plate according to claim 1, wherein the thickness on the first end surface side is 1.0 mm or more and 2.3 mm or less, and the thickness on the second end surface side is 1.1 mm or more and 3.3 mm or less. ### Claim 16 (depends on 1) The glass plate according to claim 1, wherein the wedge shape glass plate has a wedge angle of 0.2 mrad or more and 0.6 mrad or less. ### Claim 17 (depends on 2) The glass plate according to claim 2, wherein the thickness on the first end surface side is 0.5 mm or more and 2.35 mm or less, and the thickness on the second end surface side is 0.6 mm or more and 3.35 mm or less. ### Claim 18 (depends on 2) The glass plate according to claim 2, wherein the wedge shape glass plate has a wedge angle of 0.1 mrad or more and 0.7 mrad or less. ### Claim 19 (depends on 4) The glass plate according to claim 4, wherein the thickness on the first end surface side is 0.5 mm or more and 2.35 mm or less, and the thickness on the second end surface side is 0.6 mm or more and 3.35 mm or less. ### Claim 20 (depends on 4) The glass plate according to claim 4, wherein the wedge shape glass plate has a wedge angle of 0.1 mrad or more and 0.7 mrad or less.