GLASS VEHICLE ROOF COMPRISING LOCALIZED ZONES UNDER COMPRESSIVE STRESS

• Main Authors: HENNION, ALEXANDRE, FREBOURG, PHILIPPE
• Format: Patent
• Language: English; French
• Published: 18.04.2013
• Subjects: LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; MOTOR VEHICLES; PERFORMING OPERATIONS; TRAILERS; TRANSPORTING

L'invention concerne un toit de véhicule automobile comprenant deux bords longitudinaux et deux bords transversaux, symétrique par rapport à un plan longitudinal médian, consistant en un vitrage comprenant au moins une feuille de verre minéral, ladite feuille comprenant une ceinture de contraintes de bords en compression, ladite feuille comprenant au moins deux zones locales de contraintes en compression à l'intérieur de ladite ceinture et placées symétriquement par rapport audit plan de symétrie, chaque zone locale de contraintes en compression étant à moins de 30 cm d'un bord longitudinal. An automotive vehicle roof that has two longitudinal edges and two transverse edges and that is symmetrical with respect to a median longitudinal plane, the roof consisting of a glazing unit including at least one mineral glass sheet, the sheet including a border of compressive edge stresses and at least two localized zones of compressive stress inside the border, the zones being placed symmetrically relative to the plane of symmetry and each localized zone of compressive stress being less than 30 cm from a longitudinal edge.