| US 7,508,406 B2 | ||
| Glazing comprising break lines | ||
| Alexander Oehrlein, Herzogenrath (Germany) | ||
| Assigned to Saint-Gobain Glass France, Courbevoie (France) | ||
| Appl. No. 10/544,481 PCT Filed Feb. 11, 2004, PCT No. PCT/FR2004/000304 § 371(c)(1), (2), (4) Date Jan. 06, 2006, PCT Pub. No. WO2004/074193, PCT Pub. Date Sep. 02, 2004. |
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| Claims priority of application No. 103 05 733 (DE), filed on Feb. 12, 2003. | ||
| Prior Publication US 2006/0138798 A1, Jun. 29, 2006 | ||
| Int. Cl. B41J 2/435 (2006.01); B60J 1/00 (2006.01) | ||
| U.S. Cl. 347—224 [296/84.1; 65/112] | 17 Claims |
| 1. A method for producing deliberate rupture zones in a window, comprising:
subjecting a structure of glass to local overheating using a high-energy beam penetrating the glass, in which deliberate rupture
zones are produced by sequentially guiding the beam in a predetermined path along a preferred path for the window to break
along and by sequentially focusing the beam both along the predetermined path and at various depths relative to the surface
of the window,
wherein the sequential focusing at various penetration depths follows a line that is inclined and/or curved relative to the
normal to the surface of the glass so that a weakened structure is created in the window to obtain rupture behavior of the
window that differs according to a direction in which the influence leading to rupture acts.
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