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1. (WO2015119752) THREE STAGE FORMING OF GLASS SHEET WITH TRANSVERSE CURVATURE
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2015/119752 International Application No.: PCT/US2015/011520
Publication Date: 13.08.2015 International Filing Date: 15.01.2015
IPC:
C03B 23/035 (2006.01) ,C03B 23/03 (2006.01) ,C03B 35/14 (2006.01)
C CHEMISTRY; METALLURGY
03
GLASS; MINERAL OR SLAG WOOL
B
MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL; SUPPLEMENTARY PROCESSES IN THE MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL
23
Re-forming shaped glass
02
Re-forming glass sheets
023
by bending
035
using a gas cushion or by changing gas pressure, e.g. by applying vacuum
C CHEMISTRY; METALLURGY
03
GLASS; MINERAL OR SLAG WOOL
B
MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL; SUPPLEMENTARY PROCESSES IN THE MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL
23
Re-forming shaped glass
02
Re-forming glass sheets
023
by bending
03
by press-bending between shaping moulds
C CHEMISTRY; METALLURGY
03
GLASS; MINERAL OR SLAG WOOL
B
MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL; SUPPLEMENTARY PROCESSES IN THE MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL
35
Transporting of glass products during their manufacture
14
Transporting hot glass sheets
Applicants:
GLASSTECH, INC. [US/US]; 995 Fourth Street Ampoint Industrial Park Perrysburg, Ohio 43551, US
Inventors:
NITSCHKE, Dean M.; US
GRZESZCZAK, Jeffrey A.; US
JINKA, Ashoka G.; US
SCHNABEL, JR., James P.,; US
NITSCHKE, David B.; US
Agent:
KUSHMAN, James A.; US
Priority Data:
14/174,26506.02.2014US
Title (EN) THREE STAGE FORMING OF GLASS SHEET WITH TRANSVERSE CURVATURE
(FR) FORMAGE DE FEUILLES DE VERRE EN TROIS ÉTAPES AVEC COURBURE TRANSVERSALE
Abstract:
(EN) A glass sheet forming station and method utilize first and second upper molds and a lower mold to provide three stage forming. The glass is curved on the upper mold in the first stage but retains straight line elements transverse to the curvature. Transfer of the initially formed glass sheet from the first upper mold to the lower mold then provides the second stage of gravity forming and the glass sheet is then press formed between the second upper mold and the lower mold in the third stage which reduces optical distortion in the central viewing area of the formed glass sheet. In one embodiment the glass sheet is moved horizontally on the lower mold, and in another embodiment the glass sheet is moved horizontally on the first upper mold.
(FR) La présente invention concerne une station de formage de feuilles de verre et un procédé utilisant des premier et second moules supérieurs et un moule inférieur pour permettre le formage en trois étapes. Le verre est incurvé sur le moule supérieur dans la première étape mais retient des éléments linéaires droits transversalement par rapport à la courbure. Le transfert de la feuille de verre initialement formée à partir du premier moule supérieur vers le moule inférieur fournit ensuite la seconde étape de formage par gravité et la feuille de verre est ensuite formée sous pression entre le second moule supérieur et le moule inférieur dans la troisième étape qui permet de réduire la distorsion optique dans la zone de visualisation centrale de la feuille de verre formée. Dans un mode de réalisation, la feuille de verre est déplacée horizontalement sur le moule inférieur, et dans un autre mode de réalisation, la feuille de verre est déplacée horizontalement sur le premier moule supérieur.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)