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| Number | Title | Issue Date |
| 7152794 | Automated bar code label canceller, and method of cancelling bar codes A method and apparatus for heat-treating a thermal-direct-printed bar code label, upon which a bar code has been pre-printed by previously exposing predetermined portions of the thermal-direct-printed bar code label to a predetermined temperature level, to a similar... | 12/26/2006 |
| 7141205 | Method for discharging reduced product from a movable-hearth furnace and a discharging device A method for discharging a reduced product produced on a movable hearth of a movable-hearth furnace uses a discharging device. The discharging device includes a removal unit for removing the reduced product from the movable hearth, a separation unit for separating t... | 11/28/2006 |
| 7093457 | Annular cooler pallet construction A pallet construction for an annular cooler forms a gas permeable surface for supporting and transporting material during processing thereof. The pallet construction includes a pallet deck having a series of substantially parallel rows of spaced apart elongated slot... | 08/22/2006 |
| 6926521 | Method and device for treating bulk products Method and apparatus for treating, in particular cooling, bulk material which is lying on a conveying grate (10) in the form of a layer (20). The gas is passed through the grate (10) and the layer (20) from the bottom upward. The grate is... | 08/09/2005 |
| 6872074 | Method for discharging reduced product from a movable-hearth furnace and a discharging device A method for discharging a reduced product produced on a movable hearth of a movable-hearth furnace uses a discharging device. The discharging device includes a removal unit for removing the reduced product from the movable hearth, a separation unit for separating t... | 03/29/2005 |
| 6345580 | Thrust grate with lateral guidance members for the moved grate component Thrust grate with a stationary grate component and with a grate component (2) moved forwards and backwards and is connected to members for its lateral guidance. These members are formed by oppositely arranged tension elements (3) stretched between the mov... | 02/12/2002 |
| 6267588 | Longitudinal continuous furnace applicable to construction ceramic material A longitudinal continuous furnace applicable to construction ceramic material, including a main body (1) lined inside with refractory brick provided internally with a row of nozzles (2) intended to diffuse hot air generated by coaxial gas burners (4), air... | 07/31/2001 |
| 6217318 | Grate bar for pelletizing and sintering furnaces "AN IMPROVEMENT IN A GRATE BAR FOR PELLETIZING AND SINTERING FURNACES" comprised of a single body (10) provided with a higher horizontal girder (1) of rectangular cross-section supported in its ends by I-shaped legs (2) which are provided in their higher ... | 04/17/2001 |
| 6142772 | Movable tunnel kiln for making clay products and a system with the tunnel kiln The invention relates to a movable tunnel kiln for clay product manufacture and a production process system employing a tunnel kiln. Provided a kiln bottom of the tunnel kiln is fixed and takes a circular shape, the kiln body is circular and movable, road... | 11/07/2000 |
| 6036483 | Method of controlling the conveying speed of a grate cooler Method of controlling the conveying speed of a grate cooler as a function of the state of the bed of material to be cooled in the initial region of the cooler while taking into account the flow resistance of said bed of material. According to the inventio... | 03/14/2000 |
| 5919040 | Kiln, especially for ceramic products A kiln for ceramic products has a firing chamber including sidewalls with opposed slots. A transport device for transporting the ceramic products through the firing chamber in a transport direction is provided. The transport device includes rods for suppo... | 07/06/1999 |
| 5722825 | Device for heat-treating metallic work pieces in a vacuum A device for heat-treating metallic workpieces in a vacuum has a revolving vacuum furnace with an inlet transfer lock for introducing a batch of workpieces into the revolving vacuum furnace and with an outlet transfer lock for removing the batch of workpi... | 03/03/1998 |
| 5667378 | Low profile kiln apparatus The present invention relates to an apparatus (1) efficiently producing brick (53). More specifically, the invention relates to an automated, ultra low profile, continuously moving dryer, kiln and brick handling system which provides efficient, effective ... | 09/16/1997 |
| 5595481 | Temperature control method for heating kiln A method for controlling temperature in a heating kiln is able to maintain the temperature uniformly at a set temperature of the kiln. Output of each burner provided in the kiln is controlled on the basis of temperatures at plural positions affected by pl... | 01/21/1997 |
| 5168036 | Kiln cars A polyhedronal post terminal defining at least one polygonally-shaped cavity passing therethrough. The post terminal also defines at least one hole passing through one of the post terminal's outside wall surfaces, but does not pass through the post termin... | 12/01/1992 |
| 5112223 | Hollow load-bearing universal kiln car refractory modules The present invention relates to kiln car refractory furniture. In combination, (a) a kiln car having chassis that carries a platform; (b) a curb of a row of a plurality of hollow load-bearing refractory modules aligned along the periphery of the platform... | 05/12/1992 |
| 5088921 | Heat treatment furnace An elongated, horizontal tunnel-type furnace for heat treating workpieces carried in succession therethrough. The furnace is of modular construction and comprises a series of contiguous individual modular sections that define a tunnel-type enclosure. Each... | 02/18/1992 |
| 5069618 | Method and kiln for firing ceramic articles In a tunnel kiln or other through-type kiln having aligned successive preheating, firing and cooling zones, counter-current air flows are provided in the preheating and cooling zones while essentially isolating the firing zone from air exchange by circula... | 12/03/1991 |
| 4990086 | System for under-cart cooling of furnace carts in tunnel furnaces A system for under-cart cooling of furnace carts in tunnel furnaces comprises a plurality of closed cooling air channels which fill the under-cart channel to the largest possible extent and are only slightly spaced from the undersides of the tent and are ... | 02/05/1991 |
| 4966548 | Grate cooler device for the heat treatment of bulk material The heat treatment of solids by combustion, cooling, or the like with the aid of gas may take place on a grate conveying such solids while the gas is passed through openings in the surface of the grate. In order to provide lateral clearances of such grate... | 10/30/1990 |
| 4940408 | Tunnel kiln A tunnel kiln for firing molded ceramic green products includes a gate for feeding a kiln car into and out of the kiln. The gate located at low temperature parts of the kiln includes side walls made of a stainless steel having inclined surfaces and a ceil... | 07/10/1990 |
| 4897034 | Trucks for use in tunnel kilns A truck for use in a tunnel kiln is disclosed. The tunnel kiln is used for firing shaped bodies by heating them with use of a plurality of combustion burners provided on sides inside the tunnel kiln. The truck comprises supports. Among them, at least supp... | 01/30/1990 |
| 4884969 | Tunnel kiln The invention relates to a tunnel kiln for fine ceramic products comprizing a heating section, a firing section, and a cooling section, where by means of gas conveying means (10) gases are taken in from the region of said cooling section (140, 176, 182) a... | 12/05/1989 |
| 4846678 | Means and method for heat treatment of green bodies The invention relates to means for heat treating green bodies comprising two mutually parallel kiln channels operated in opposite directions each having at least one heating section, firing section, and cooling section, where an offtake means leads from o... | 07/11/1989 |
| 4790749 | Kiln for firing ceramic materials such as tiles and the like In the modular kiln, which is designed for the firing of ceramic tiles etc., one has a series of single treatment zones (16) arranged in a continuous succession and interconnected by a conveyor (6); heat exchange is brought about by radiation between spec... | 12/13/1988 |
| 4778384 | Multitrain tunnel kiln especially adapted for the underside cooling of kiln cars The tunnel kiln establishes multiple kiln car train paths by a pedestal which upwardly projects from the kiln's foundation. Aprons which depend from the kiln cars and extend transversely between laterally adjacent pedestals (or a pedestal and a side wall ... | 10/18/1988 |
| 4744750 | Tunnel kiln system for cooling the underside of a train of kiln cars Intensive undercar cooling is achieved in the latter portion of a tunnel kiln by (a) a continuous undercar longitudinal cooling air flow or (b) by transverse undercar sub-chambers in which heat exchangers are used to set up local cooling connection curren... | 05/17/1988 |
| 4722682 | Method and apparatus for cooling the underside of a train of kiln cars in a tunnel kiln Transverse sub-chambers are defined beneath a train of kiln cars. Pressure equalization is permitted with respect to the firing chamber thereabove but very little air will actually pass therebetween because there is no other substantial air passageway lea... | 02/02/1988 |
| 4718847 | Kiln system A kiln system for heat treating ceramic and metallic material. The system comprises an insulated housing having an open-ended through passageway, a plurality of kiln cars adapted to be received in and pass through the passageway, a plurality of spaced sea... | 01/12/1988 |
| 4674975 | Method and tunnel type furnace for calcining carbonaceous bodies, in particular electrodes The method comprises passing preformed bodies to be calcined, containing pyrolyzable substances, through a furnace having, arranged in succession, a first heating zone, a second or combustion zone wherein volatile substance released by said bodies are sub... | 06/23/1987 |
| 4616995 | Tunnel dryer for bricks and like objects A tunnel dryer and method for drying unfired bricks or similar objects in which the tunnel comprises exhaust means for exhausting heated gases within the tunnel, partition means disposed in the drying space of the tunnel consisting of at least one vertica... | 10/14/1986 |
| 4615676 | Calcining method and enclosure structure therefor Method for calcining carbonaceous blocks into carbonaceous bodies, in which either a continuous or intermittent operation furnace is used. After placing carbonaceous blocks to be calcined onto the loading platform of a cart, a containment structure or enc... | 10/07/1986 |
| 4609345 | Tunnel kiln A tunnel kiln particularly adapted for firing ceramic workpieces has a firing channel including a heating zone, a firing zone, and a cooling zone, and has kiln cars and kiln sole sections which bear the workpieces to be treated and are movable through sai... | 09/02/1986 |
| 4601660 | Loading apparatus for heat treatment furnace There is described a loading apparatus for conveying charging grates in heat treatment furnaces has one or more chain strands which run in guide rails which also extend into the heat treatment furnace; at the end of the chain strands facing toward the fur... | 07/22/1986 |
| 4600380 | Grate plates retaining solids and improving gas distribution to be used in grates for the heat treatment of solid material The combustion, cooling or other treatment of solids with the aid of gas may take place on a grate carrying or conveying said solids while the gas is passed through openings provided in the surface of the grate. In order to retain said solids entirely abo... | 07/15/1986 |
| 4575055 | Circular traveling grate machine A circular traveling grate machine includes rotatable, inner and outer, rail mounted, side frame members forming the sidewalls of an annular hearth region therebetween. A plurality of individually tiltable pallets are positioned in the hearth region and a... | 03/11/1986 |
| 4572484 | Pallet construction for traveling grate machines A pallet construction for use in a circular traveling grate machine of the type having rotatable inner and outer side frames which move with the pallets on either side thereof. Various restraining and float means associated with the pallet hanger brackets... | 02/25/1986 |
| 4560350 | End block An end block adapted for use on a kiln car and for retaining a resilient refractory member which bridges between the kiln car and an adjacent kiln car includes a refractory body having a transverse recess. The recess includes an enlarged cavity and a neck... | 12/24/1985 |
| 4504221 | Tunnel oven and wagon There is disclosed a tunnel oven which comprises a base, a guide provided on the base to guide the movement through the oven of wagons bearing product to be treated in the oven, side walls connected to the base and a roof connected to the upper ends of th... | 03/12/1985 |
| 4501412 | Non-polluting heat recuperative sintering method and apparatus A sintering machine for pulverulent ore concentrates containing sulfidic metals including an ignition zone, a sintering zone and at least two cooling zones wherein there is total recirculation of cooling gases between two cooling zones and including a rec... | 02/26/1985 |
