Source: http://www.google.com/patents/US7232497?dq=6,249,7726,249,772
Timestamp: 2016-05-06 14:05:03
Document Index: 135105365

Matched Legal Cases: ['arts 13', 'arts 13', 'art 12', 'arts 13', 'art 12', 'art 14', 'art 13', 'arts 13']

Patent US7232497 - Method and device for filling a cavity between two plates of fire-resisting ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsA fire-resisting composite glass is comprised of at least two glass plates (1, 2) and an interspaced cavity (6). The distance between the glass plates (1, 2) is determined by an encompassing bead (3) of plastic spacer material. In addition, in the margin region between the glass plates (1, 2) a bead...http://www.google.com/patents/US7232497?utm_source=gb-gplus-sharePatent US7232497 - Method and device for filling a cavity between two plates of fire-resisting composite glassAdvanced Patent SearchPublication numberUS7232497 B2Publication typeGrantApplication numberUS 10/489,209PCT numberPCT/CH2002/000515Publication dateJun 19, 2007Filing dateSep 19, 2002Priority dateOct 4, 2001Fee statusLapsedAlso published asCA2458387A1, CN1321813C, CN1564740A, DE50211411D1, EP1432570A1, EP1432570B1, US20050000623, WO2003031173A1Publication number10489209, 489209, PCT/2002/515, PCT/CH/2/000515, PCT/CH/2/00515, PCT/CH/2002/000515, PCT/CH/2002/00515, PCT/CH2/000515, PCT/CH2/00515, PCT/CH2000515, PCT/CH2002/000515, PCT/CH2002/00515, PCT/CH2002000515, PCT/CH200200515, PCT/CH200515, US 7232497 B2, US 7232497B2, US-B2-7232497, US7232497 B2, US7232497B2InventorsAnders Lindberg, Jan-Olof LindqvistOriginal AssigneeVetrotech Saint-Gobain (International) AgExport CitationBiBTeX, EndNote, RefManPatent Citations (5), Referenced by (1), Classifications (19), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetMethod and device for filling a cavity between two plates of fire-resisting composite glass
In order to be able to fill the fire-resisting substance 6 into the cavity 5 between the two glass plates 1, 2 at least one filling opening and one venting opening must be available. Usefully one opening is provided at a corner of the fire-resisting composite glass, which forms the filling as well as the venting opening. But it is also possible to provide one opening each at opposite corners of the fire-resisting composite glass. According to the invention, appropriate means for generating these openings are already installed during the fabrication process of the structure of the composite of both plates 1, 2. The method process for preparing the filling and venting openings as well as for the subsequent closing of these openings is depicted in FIGS. 2 to 6 corresponding to the method steps. FIG. 2 shows a plan view onto a segment of a corner region of the glass plate 1, onto which the spacer material bead 3 has already been applied. In the corner shown as well as in the opposite corner of glass plate 1 now a first means or a core element 9 is emplaced transversely over the spacer material bead 3, and this core element 9 does not project beyond the edge face 8 of glass plate 1. The thickness of the core element 9 is maximally as large as the nominal distance between the two glass plates 1 and 2 after they have been pressed together. The core element 9 comprises head parts 13 and 14, which are in contact on the innser face of glass plate 1. Between the two head parts 13, 14 a shaped part 12 is developed, which is less thick than the two head parts 13, 14. This shaped part 12 is pressed into the spacer material bead 3 and displaces the butyl polymer in this region. At least on the outer head part 14 a nose 15 is disposed. This nose 15 serves for the purpose of being able to grasp the core element 9 with an auxiliary tool and pull it out of the fire-resistant glazing. At least on the inner head part 13 entrainers 16 are disposed, which are directed toward the spacer material bead 3 and form cutting edges. In the depicted example of the core element 9 the two head parts 13 and 14 are developed symmetrically, i.e. they both comprise a nose 15 as well as also entrainers 16. This has the advantage that the core element 9 can also be installed in a position rotated by 180�.
As soon as a core element 9 has been emplaced and pressed into the spacer material bead in the specific corner region of the glass plate 1, the second glass plate 2 can be placed onto it and the plate composite, as already described, is now pressed together to the desired nominal thickness in a plate press. The core element 9 is now located in a corner region of the fire-resisting composite glass between the two glass plates 1, 2 without projecting beyond the edge faces 8. Applying the sealing material bead 4 in the margin groove 7 can now take place automatically, since there are no projecting parts and a potential extrusion robot can be driven about the full circumference of 360� around the fire-resisting composite glass. In the case of a composite of more than two plates, these processes are carried out several times, until the desired number of cavities has been formed.