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| Number | Title | Issue Date |
| 7175924 | Fine feldspathic earthenware and process of manufacturing the same A fine feldspathic earthenware including a body and a glaze layer covering surfaces of the body. The body has water absorption percentage of not lower than 3% and lower than 15% and includes an annular bottom formed on a bottom portion of the body. The glaze layer i... | 02/13/2007 |
| 7000433 | Device for heating plates of glass A device for heating plates of glass (3) which are hardened or deformed, includes two ceramic heating plates (1) between which a plate of glass (3) is arranged. Compensation plates (20) are associated with the heating plates (1) at... | 02/21/2006 |
| 6845633 | Method and apparatus for heating glass panels in a tempering furnace equipped with rollers In a method and an apparatus for heating glass panels in a tempering furnace equipped with rollers, glass panels are carried on a conveyor defined by rollers into a tempering furnace for the duration of a heating cycle, followed by carrying the glass panels into a t... | 01/25/2005 |
| 6513347 | Heat conditioning process For heat conditioning flat panel glass substrates the substrates are directly exposed in vacuum to the radiation of lamps, the lamps being selected so that their spectral radiation characteristics (b, c) fit with the absorption characteristics (a) of the ... | 02/04/2003 |
| 6470711 | Furnace for heat treatments of glass sheets A furnace particularly for heat treatments of glass sheets, comprising a longitudinally-elongated chamber which contains roller conveyor elements for the glass sheets. The furnace comprises irradiation-heating elements combined with first and second eleme... | 10/29/2002 |
| 6282923 | Heating glass sheets in tempering furnace A method and an apparatus for heating glass sheets in a tempering furnace. The tempering furnace (1) includes rollers (3) for conveying and oscillating the glass sheets (4) during heating, and resistors (5, 6) for heating the glass sheets (4) from above a... | 09/04/2001 |
| 6172336 | Heating glass in tempering furnace A method and an equipment for heating glass in a tempering furnace provided with rollers. In a tempering furnace glass (3) is heated from above with upper resistors (4) and from below with lower resistors (5). The heating resistors (4, 5) are dimensioned ... | 01/09/2001 |
| 6131412 | Adjusting temperature of glass sheets in tempering furnace A method and equipment for adjusting the temperature of glass sheets in a tempering furnace. The tempering furnace (1) comprises rollers (3) for conveying and oscillating the glass sheets (4) during heating, and resistors (5, 6) for heating the glass shee... | 10/17/2000 |
| 6079227 | Method for manufacturing bent and tempered glass sheet and apparatus for manufacturing the same In a quenching apparatus for quenching a glass sheet that has been heated and bent in a heating furnace, a cooling gas blows onto the glass sheet to provide a distribution of a temperature and/or a distribution of a static pressure in at least one section... | 06/27/2000 |
| 6053011 | Process and plant for hardening glass plates A system for tempering glass plates has preheating zone (1) in which several glass plates (7) stacked vertically in compartmented car (6) are heated together to a temperature below the tempering temperature of for example 650° C. (for example 300° C.). ... | 04/25/2000 |
| 5595583 | Apparatus for localized surface glazing of ceramic articles A surface of a ceramic article, such as a glazed surface on a whiteware article, is treated with radiant energy such as infrared light from a laser to provide a localized remelting of the material at the surface in a fusing step. After the fusing step, th... | 01/21/1997 |
| 5302178 | Hardening furnace for sheets of glass and the like The invention relates to a hardening furnace, in particular for sheets of glass (2) and the like. In the furnace, the glass sheets (2) are sustained and transported by a conveyor plane (1) of the roller type above and beneath which plane an upper radiatin... | 04/12/1994 |
| 5173102 | Apparatus for curving glass sheets A curving furnace has at least one curving station, of which the walls are equipped with resistors. The series of upper resistors are subdivided into one or more axial zones in which the resistors are oriented parallel to the height of the glass sheets, a... | 12/22/1992 |
| 5122180 | Furnace for heating glass sheets A furnace for heating glass sheets moving along the axis of the furnace has at least one differentiated heating cell, the heating elements of which disposed at the vault side are constituted of sets of electrical resistors controlled in temperature or in ... | 06/16/1992 |
| 5079931 | Bending or supporting mould for glass sheets The invention relates to a glass sheet bending or supporting mould which is made primarily by casting of a ceramic material and which includes a curving or flat shaping surface, a number of orifices (10, 11) in a shaping surface (7, 8) as well as channels... | 01/14/1992 |
| 5066320 | Method for bending complex shapes on a glass sheet The invention relates to a method and a mould assembly for bending complex shapes on a glass sheet. The invention relates also to a bending mould and its manufacturing method. A heated glass sheet placed upon a ring mould is bent to its final shape by mea... | 11/19/1991 |
| 5057138 | Method and apparatus for preventing the arching of glass sheets in the roller-equipped furnace of a horizontal tempering plant The invention relates to a method and apparatus for preventing the arching of glass sheets in the roller-equipped furnace of a horizontal tempering plant. In order to equalize the total thermal effect applied to the top and bottom surfaces of a glass shee... | 10/15/1991 |
| 4904533 | Glass sheet heat treated by opposed burners A gas burner (20) disclosed has general utility but has particular utility when utilized in a closely spaced relationship to roller conveyed glass sheets to provide forced convection heating. The burner (20) includes a cobbustion member (38) in which gas ... | 02/27/1990 |
| 4886540 | Blow back control device for a glass sheet tempering system A blow back control device (10) for use in a glass tempering system (12) is disclosed as including an air supply member (28) mounted between a glass heating furnace (14) and a quenching station (24). The air supply member (28) supplies a planar jet of hig... | 12/12/1989 |
| 4851026 | Bearing unit for carrying rollers of a horizontal furnace and a horizontal furnace for glass sheets A gas static bearing unit for carrying rollers which is suitable as a heat-resistant bearing inside a horizontal furnace for glass sheets. The bearing unit consists of a bearing 1 which automatically adapts to the orientation of the section of roller 27 m... | 07/25/1989 |
| 4824464 | Process and apparatus for heating glass sheets A device and a process for heating glass sheets in horizontal position, to bend them or temper them, by means of two series of resistors, the series being distributed on both sides of the path followed by the glass sheet and on a portion of the length of ... | 04/25/1989 |
| 4738705 | Gas burner forced convection heating of glass sheets A furnace (12) including a roller conveyor (18) and gas burners (20) distinct from the conveyor for supplying forced convection that is the dominant mode of heat transfer to glass sheets during a heating process. The gas burners (20) have general utility ... | 04/19/1988 |
| 4687501 | Lightweight bending iron heat shields for glass bending molds Shields tend to retain heat while shading glass sheets from a heat source. As the shield retains more heat, it loses its effectiveness to shade the glass sheet. A second shield is positioned between the glass sheet and the hot shield to maintain effective... | 08/18/1987 |
| 4668267 | Apparatus for the formation of mineral fibers by means of centrifuging wheels An apparatus for the manufacture of mineral fibers from a drawable material such as glass products, poured in the molten state onto a first centrifuging wheel before being conducted to a following wheel, each wheel transforming part of the molten material... | 05/26/1987 |
| 4620864 | Glass sheet tempering utilizing heating and quenching performed in ambient at superatmospheric pressure A glass sheet tempering method and system (10) disclosed utilizes a heating chamber (22) and a quenching chamber (26) which contain ambients at superatmospheric pressure during both the heating and quenching. Forced convection heating is preferably perfor... | 11/04/1986 |
| 4617043 | Method of driving a glass tempering system and a glass tempering system for carrying out the method The present invention relates to a method of driving a glass tempering system and to a glass tempering system for carrying out the method. The main components of the system are a loading section, a heating furnace, a quench and cooling section and an unlo... | 10/14/1986 |
| 4608073 | Roller conveyor for a glass furnace A glass furnace, e.g. for annealing or tempering glass, has a roller conveyor whose fused rollers rest upon stub rollers overshot by a belt which alternately overshoots and undershoots the stub rollers. A drive for the belt includes a pair of motors conne... | 08/26/1986 |
| 4601743 | Glass furnace with heat sensing means A glass furnace, e.g. for annealing or tempering glass, has a roller conveyor whose fused rollers rest upon stub rollers overshot by a belt which alternately overshoots and undershoots the stub rollers. A drive for the belt advantageously is controlled by... | 07/22/1986 |
| 4591374 | Apparatus for equalizing the temperature of conveyor rolls in a glass-tempering furnace The invention relates to an apparatus for equalizing the temperature of conveyor rolls in a glass-tempering furnace, said furnace comprising a thermally insulated housing (1) confining a heating chamber (8), conveyor rolls (4), extending horizontally betw... | 05/27/1986 |
| 4505671 | Glass sheet roller conveyor furnace including gas jet pump heating A roller conveyor furnace (12) is disclosed as including at least one gas jet pump (24) for providing forced convection heating of glass sheets during conveyance on rolls (22) of the furnace conveyor (20). A source (26) of compressed gas located externall... | 03/19/1985 |
| 4481025 | Glass annealing lehr A lehr for heat treating glass articles is assembled from a series of modules to define an elongated insulated tunnel. A belt conveyor extends throughout the tunnel for moving articles from one end to the other. Duct work connection between the tunnel and... | 11/06/1984 |
| 4414015 | Process and apparatus for forming a metal or metal compound coating In order to control the thickness of a metal or metal compound coating which is formed on a face of a freshly formed ribbon of hot glass during its travel from a flat glass forming installation by contacting such face at a coating station with a fluid med... | 11/08/1983 |
| 4390359 | Method of and apparatus for preventing the curving of glass sheets in the roller-equipped furnace of a horizontal tempering plant A method for the prevention of the curving of glass sheets in the roller-equipped furnace of a horizontal tempering plant utilizes a substantially turbulent air flow over the upper surface of the glass sheet for intensifying the convection heat action app... | 06/28/1983 |
| 4341546 | Roll drive mechanism for glass sheet processing equipment A roll drive mechanism (14) for a horizontal roller conveyor (12) of glass sheet processing equipment (10) has particular utility with a heating furnace (18) of a glass sheet tempering system. First and second continuous drive loops (22,24) of the drive m... | 07/27/1982 |
| 4332608 | Chain drive mechanism for equipment for heating and cooling workpieces A conveyor for a glass-treating furnace has ceramic rollers forming the conveying bed for the glass to be treated. The rollers are of uniform section throughout their length, and are supported adjacent opposite ends on driving rolls. The rollers directly ... | 06/01/1982 |
| 4303437 | Process for the adjustment of the glass temperature in a float glass lehr and float glass lehr in order to bring this process into operation A method and an apparatus for the heat treatment of a float glass ribbon in which a tunnel lehr is provided with arrays of parallel heat-exchange tubes above and below the path of the ribbon and for each of the longitudinally divided zones of these arrays... | 12/01/1981 |
| 4300937 | Quench devices, glass tempering furnaces, and methods of utilizing same Primary and secondary quench sections and radiant electrical heaters for a roller hearth glass tempering furnace having a roller track supporting the endless conveyor drive belts, and adjustable locators for conveyor roller spacing. At least the primary q... | 11/17/1981 |
| 4297121 | Glass tempering furnaces and systems A roller hearth glass tempering furnace having a roller track supporting the endless conveyor drive belts, and adjustable locators for conveyor roller spacing. The heating zone size conforms substantially to the size of the glass article being treated. Th... | 10/27/1981 |
| 4240816 | Method and apparatus for forming tempered sheet glass with a pyrolytic film in a continuous process A method and apparatus for filming and tempering a pre-cut glass sheet in a continuous process. The glass sheet is heated initially to a temperature sufficient for pyrolysis. The heated glass is sprayed with a coating composition which reacts with the gla... | 12/23/1980 |
| 4201562 | Method for coating glassware This invention relates to the art of coating glassware while the ware is moving through an annealing lehr which is provided with a cooling section near the exit end of the lehr. The cooling section is of the continuous recirculation type providing an arra... | 05/06/1980 |
