# US 10,375,769 B2 · High-speed locomotive windshield and preparation method therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,375,769 B2 - Document ID: US10375769B2 - Status: Granted - Kind: B2 - Application number: 14/781,786 - Filed: 2014-04-29 - Published: 2016-08-25 - Granted: 2019-08-06 - Earliest claimed: 2014-02-24 - Assignees: China Building Materials Academy Co., Ltd.; Beijing Hang Bo New Material Technology Co., Ltd - Applicants: China Building Materials Academy; Beijing Hang Bo New Material Technology Co., Ltd - Inventors: Yuanchun Mu; Dayan Du; Baojun Zhang; Zhiwei Xu; Yan Zuo; Jing Fu; Chaoying Liu; Fan Zhang; Wei Chen; Yang Zhang; Yanfang Zhang; Yuan An - Web page: https://patentgrep.com/patent/US10375769B2 ## CPC - H05B 3/84: Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields - B32B 17/06: comprising glass as the main or only constituent of a layer, next to another layer of a specific {material} - B32B 17/10045: {with at least one intermediate layer consisting of a glass sheet} - B32B 17/10137: {Chemical strengthening} - B32B 17/10201: {Dielectric coatings} - B32B 17/10385: {for ohmic resistance heating} - B32B 17/1077: {containing polyurethane} - B32B 37/1018: {using only vacuum} - B61D 25/00: Window arrangements peculiar to rail vehicles (vehicle window arrangements in general B60J; cleaning vehicle windows B60S; heating arrangements specially adapted for transparent or reflecting areas H05B3/84) - C03C 17/23: Oxides (C03C17/02 takes precedence) - C03C 17/30: with silicon-containing compounds - C03C 17/3417: {all coatings being oxide coatings} - C03C 27/10: with the aid of adhesive specially adapted for that purpose - B32B 2315/02: Ceramics - B32B 2315/08: Glass - B32B 2605/006: Transparent parts other than made from inorganic glass, e.g. polycarbonate glazings - B32B 2605/10: Trains - C03C 2217/212: TiO2 - C03C 2217/213: SiO2 - C03C 2217/73: Anti-reflective coatings with specific characteristics - C03C 2218/113: by sol-gel processes - H05B 2203/005: using multiple resistive elements or resistive zones isolated from each other - H05B 2203/014: Heaters using resistive wires or cables not provided for in H05B3/54 - Y02T 30/00: Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - B61D: BODY DETAILS OR KINDS OF RAILWAY VEHICLES (vehicles in general B60; adaptation of vehicles to special systems B61B; underframes B61F) - C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract Provided is a windshield for a high-speed locomotive and preparation method thereof. The windshield comprises an anti-reflection film layer; a first chemical tempering glass layer coated with the anti-reflection film layer on a first side thereof; at least one second chemical tempering glass layer located on a second side of the first chemical tempering glass layer; the second chemical tempering glass layer being bonded together with the first chemical tempering glass layer via a layer of an adhesive film, and adjacent second chemical tempering glass layers also being bonded together via a layer of the adhesive film; an anti-splash film layer, located on an outer side of the outermost second chemical tempering glass layer and bonded together with the outermost second chemical tempering glass layer via a layer of the adhesive film; and a first electric heating element disposed inside the adhesive film layer in contact with the first chemical tempering glass layer. The windshield of the present invention can meet requirements for the high-speed locomotive, and especially can meet the safety requirements for the high-speed locomotive. ## Claims ### Claim 1 A windshield for a high-speed locomotive, comprising an anti-reflection film layer having a thickness of 100 nm-500 nm; a first chemical tempering glass layer, coated with the anti-reflection film layer on a first side thereof; at least two second chemical tempering glass layers located on a second side of the first chemical tempering glass layer, wherein one of the at least two second chemical tempering glass layer is bonded together with the first chemical tempering glass layer via a first adhesive film layer, and the at least two second chemical tempering glass layers are also bonded together via a second adhesive film layer, wherein the second adhesive film layer is a polyurethane film and has a thickness of 1.5 mm-4 mm; an anti-splash film layer, located on an outer side of an outermost second chemical tempering glass layer and bonded together with the outermost second chemical tempering glass layer via a third adhesive film layer wherein the anti-splash film layer has a thickness of 0.5 mm-1.5 mm; and a first electric heating element, disposed inside the first adhesive film layer in contact with the first chemical tempering glass layer, wherein the first electric heating element comprises: at least one electric heating wire, disposed inside the first adhesive film layer in contact with the first chemical tempering glass layer; an input busbar, electrically connected with a first end of each of the electric heating wires; an output busbar, electrically connected with a second end of each of the electric heating wires; an input wire, electrically connected with the input busbar and extended out of the windshield; and an output wire, electrically connected with the output busbar and extended out of the windshield, wherein each of the first chemical tempering glass layer and the at least two second chemical tempering glass layers has a surface stress of 700 Mpa-900 Mpa, wherein the first chemical tempering glass layer has a thickness of 8 mm-10 mm, and wherein each of the at least two second chemical tempering glass layers has a thickness of 4 mm-6 mm. ### Claim 2 (depends on 1) The windshield of claim 1, wherein the anti-reflection film layer is a SiO2 monolayer film, a TiO2 monolayer film, a SiO2/TiO2 double-layer film, a TiO2/SiO2 double-layer film, or a SiO2/TiO2/SiO2 multilayer film. ### Claim 3 (depends on 1) The windshield of claim 1, further comprising at least one second electric heating element in parallel connection with the first electric heating element.