Abstract: A glass pane including at least a glass sheet provided with heating strips powered by collectors, the heating strips being divided in groups. The power supply of the different groups is provided sequentially, each group being powered once per sequence. The supply is provided by a device equipped to measure the outside temperature and the temperature of the outer surface of the glass, to determine a minimum heating time for each group according to the outside temperature, and to maintain the heating in the group as long as the outer surface temperature of the glass opposite the group is not higher than the melting point of ice.

Abstract: This invention relates to panes, notably laminated panes, composed of at least one sheet of rigid material, and permanently containing a surface antenna composed of at least one microstrip separated from an earth plane by a dielectric. These panes, having such an antenna, are used for the reception and transmission of frequencies higher than 1 GHz and preferably for the frequency bands 5795-5815 MHz, 63-64 GHz and 74-77 GHz.

Abstract: A method of and a device for curving glass sheets preheated to curving temperature operate by passage of the glass sheets simultaneously over a principal shaping bed having a longitudinal trajectory which is substantially circular or substantially a cone of revolution, and one or more secondary shaping beds, the generatrices of which are inclined relative to those of the principal bed. The invention is applicable, notably, to the production of automobile panes having angled corners.

Abstract: Glass sheets which have been heated to bending temperature are bent by passing the glass sheets over a shaping bed having a substantially circular or substantially conical profile of revolution as seen in the longitudinal direction of the shaping bed. The shaping bed is composed of an assembly of revolving elements adapted for driving the glass sheets and at least one hot air cushion acting on the glass sheets in the first part of the bending zone.

Abstract: A method for the preparation of glass sheets with a view to laminating them consists of curving the glass sheets by causing them to pass one after another along a curved trajectory, then cooling them by passage between blowing chests, and of dispatching them by batches to the assembling station, and a laminated pane, the sheets of which have, in the central zone, a core compressive stress of from 1 to 50 MPa.

Abstract: A method for the preparation of glass sheets with a view to laminating them consists of curving the glass sheets by causing them to pass one after another along a curved trajectory, then cooling them by passage between blowing chests, and of dispatching them by batches to the assembling station, and a laminated pane, the sheets of which have, in the central zone, a core compressive stress of from 1 to 50 MPa.

Abstract: An apparatus for cambering glass sheets includes a reheating furnace for reheating a glass sheet, a sealed cambering station and a conveyor for transferring a heated glass sheet from the furnace to the cambering station. The cambering station includes a shaping upper member. The glass sheet therein is raised into engagement with the upper member, for example by gas pressure, in order to camber the glass sheet. Hot gas ducts surrounding the upper member blow hot gas onto the upper member in such a way as to increased the temperature thereof to a temperature higher than that of the glass sheet when the glass sheet enters the cambering station. Therefore, the glass sheet can be introduced into the cambering station at a relatively low temperature and heated to a temperature high enough for cambering only when in contact with the upper member. The cambered glass sheet can then be discharged to a cooling station.

Abstract: A process for bending glass sheets, preheated to bending temperature, includes passing the glass sheets along a longitudinal trajectory having substantially the form of a cone of revolution in a shaping bed having substantially the form of a cone of revolution.

Abstract: A method of and device for curving a glass sheet, in which the glass sheet is brought through a reheating furnace by a conveyor defining a substantially horizontal transportation plane, and is then taken over by a tool, by means of which the glass sheet is curved and/or transferred to a curving and/or discharge device. The effective position of the glass sheet is detected and the taking-over tool is repositioned as a function of the effective position.

Abstract: An apparatus for cambering glass sheets includes a reheating furnace for reheating a glass sheet, a sealed cambering station and a conveyor for transferring a heated glass sheet from the furnace to the cambering station. The cambering station includes a shaping upper member. The glass sheet therein is raised into engagement with the upper member, for example by gas pressure, in order to camber the glass sheet. Hot gas ducts surrounding the upper member blow hot gas onto the upper member in such a way as to increased the temperature thereof to a temperature higher than that of the glass sheet when the glass sheet enters the cambering station. Therefore, the glass sheet can be introduced into the cambering station at a relatively low temperature and heated to a temperature high enough for cambering only when in contact with the upper member. The cambered glass sheet can then be discharged to a cooling station.

Abstract: A machine cambering glass plates as a curved shaping bed formed of vertically aligned pairs of rollers. Each roller of each pair has an end mounted to a pivoting arm so that it can be elastically bent in a middle portion thereof, while keeping the ends of the rollers straight. Needle bearings support the rollers in the bending plane. The support arm for the lower roller supports the support arm for the upper roller, so that the two pivot together so as to provide uniform bending for the upper and lower pairs of rollers.

Abstract: A machine cambering glass plates as a curved shaping bed formed of vertically aligned pairs of rollers. Each roller of each pair has an end mounted to a pivoting arm so that it can be elastically bent in a middle portion thereof, while keeping the ends of the rollers straight. Needle bearings support the rollers in the bending plane. The support arm for the lower roller supports the support arm for the upper roller, so that the two pivot together so as to provide uniform bending for the upper and lower pairs of rollers.

Abstract: A beam carries two abutments and is moveable on the conveying direction of the conveyor. Starting from rest, the beam is accelerated to a speed less than that of the glass sheet moving on the conveyor, so that the glass sheet contacts the abutments while both are moving along the conveyor. Once the glass sheet is correctly oriented, the beam is accelerated and raised to permit the passage of the glass sheet. The beam is then retracted to the initial position for the next cycle of operation.

Abstract: A bending installation includes a shaping bed, an evacuation conveyor positioned downstream of the shaping bed and a swinging device for swinging a glass plate exiting the downstream end of the shaping bed from the shaping bed to the evacuation conveyor. The shaping bed is curved in a direction of advance of the glass plate and has a conveying direction different from that of the evacuation conveyor. The swinging device takes the form of a rotating drum mounted coaxially with a support roller. The drum includes holding rollers spaced from the support roller by a distance sufficient that a glass plate exiting the shaping bed is held between a holding roller and the support roller, so that the swinging device is swung by the weight of the glass plate to a position where the glass plate is transferred to the evacuation conveyor. A tempering air blowing box may be provided on the swinging device.

Abstract: A bending and hardening installation includes a shaping bed, an evacuation conveyor positioned downstream of the shaping bed and a tilting device for tilting a glass plate exiting the downstream end of the shaping bed from the shaping bed to the evacuation conveyor. The shaping end is curved in a direction of advance of the glass plate and has a conveying direction different from that of the evacuation conveyor. The tilting device takes the form of a rotating drum mounted coaxially with a support roller. The drum includes holding rollers spaced from the support roller by a distance sufficient that a glass plate exiting the shaping bed is held between a holding roller and the support roller, so that the tilting device is tilted by the weight of the glass plate to a positoin where the glass plate is transferred to the evacuation conveyor. An air blowing box is provided on the tilting device for hardening the glass plate as it is being tilted.

Abstract: The terminal for encapsulated glazing having coverings or equipment requiring an electric power supply. The terminal, for example of the hollow rivet type, is fastened, particularly by soldering or brazing, in the area of the edges of the glazing on a zone having a conductive covering, embedded in the encapsulation material of the glazing. The terminal makes it possible to supply power to the heating glazings.

Abstract: The invention relates to the precise positioning of sheets of glass on a conveyer, particularly in an installation for curving sheets of glass. Positioning the sheets of glass by means of a combination of actions, in whole or in part, comprising orientations, longitudinal centerings and transversal centerings.

Abstract: A heated glass plate is bent by moving over a bed or rollers defining a path curved along the direction of movement of the glass plate so as to define an upwardly facing concavity. The glass plate moves with a speed of at least 10 cm/second and is curved by the bed without contact from above. The glass plate is subsequently tempered.

Abstract: A device for forming glass sheets for using the forming process according to which the glass sheets are brought horizontally into a heating furnace then are brought to a forming station where they are transferred individually and vertically to an upper mold exhibiting a radius of curvature less than or equal to the one it is desired to impart to the glass, then are applied against the upper mold by a suction due to a low pressure created on their periphery and in the vicinity of their periphery. The device essentially comprises a suction box in which is placed an upper mold with dimensions slightly less than those of the glass sheet to be shaped and whose lower face, against which the glass sheet is applied, is located on the outside of said suction box.

Abstract: A device and process for transferring glass panes for bending comprise the raising of glass panes with a gaseous flow until they meet with an upper conveyor, maintaining contact with that conveyor and simultaneously shifting them along that conveyor, then bringing them down anew on a bending form upon which they subside.