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| Number | Title | Issue Date |
| 6746237 | Method and device for heat treating substrates Method and device for the heat treatment of substrates, wherein the substrates are positioned in the vicinity of a heated, essentially flat furnace body extending over the surface of the substrate. In order to provide a reproducible treatment when treating a number ... | 06/08/2004 |
| 6409503 | Heat treatment method and heat treatment apparatus When carrying workpieces from a loading area in which the workpieces are handled into a heat treatment furnace to make the workpieces subjected to a heat treatment process using a predetermined process gas, the loading area is evacuated and controlled at ... | 06/25/2002 |
| 6230633 | Conveyor/cooler of loose materials A conveyor/cooler of hot loose materials produced by fluid bed boilers and various industrial processes includes one or more feeding channels, which are substantially vertical or at any inclination. Because of gravity, the material leaves the combustion c... | 05/15/2001 |
| 5784974 | System for improving fuel feed control of volumetric coal feeders A feeder system for measuring and controlling the massed feed rate of particulate fuel material, such as coal particles, made up of a group of volumetric feeders and a gravimetric feeder coupled to the group of volumetric feeders. The system controls the ... | 07/28/1998 |
| 5756964 | Thermal processing apparatus A thermal processing apparatus for processing a wafer is disclosed. The thermal processing apparatus includes a thermal processing plate, a plurality of spacers, a plurality of locators, and a plurality of sensors. The temperature of the thermal processin... | 05/26/1998 |
| 5558691 | Cullet feeder An adjustable vibrating plate cullet feeder for feeding recycle glass to melting furnaces. Independent control of the rate of cullet feed is obtained by adjustment of at least one of: the angle of the feeder plate, the intensity of the vibration, and the ... | 09/24/1996 |
| 5473998 | Cement kiln having tire injection system A cement kiln having a tire injection system. The tire injection system comprises an entrance chute having an outer end portion protruding outwardly of a wall of the kiln and an inner end portion which protrudes into the kiln. The entrance chute further i... | 12/12/1995 |
| 5339751 | Apparatus and method for charging combustible solids into a rotary kiln A firing system is provided for charging a plurality of incoming combustible fuel modules containing a known amount of a parameter of interest into a heated zone of a rotating kiln. The firing system separates incoming fuel modules into a plurality of sta... | 08/23/1994 |
| 4953474 | Fuel metering bin level control A fuel metering bin level control for a wood chip bin feeding a boiler wherein the wood chips have a high propensity to bridge the bin when packed, the level control includes a short chute through which the chips are fed into the upper portion of the bin ... | 09/04/1990 |
| 4954034 | Vibratory fuel feeder for furnaces A vibratory feeder in combination with a fuel fired furnace such as a coal fired steam generating boiler is disclosed. The vibratory feeder has a tray with a flat bottom in one embodiment and a step bottom in another and a hopper having vertical sides sup... | 09/04/1990 |
| 4913406 | Shaft furnace having means for charging and adjusting a pre-mixture of ore and coke A method for operating a shaft furnace is performed by charging different ore/coke ratio mixture in radially different positions in the furnace. The ore/coke mixture ratio may be determined according to desired heat distribution in radial direction. For t... | 04/03/1990 |
| 4878797 | Method and apparatus for correcting the falling path in a loading installation of a shaft furnace The process is intended to compensate for the random movements and inclinations of a loading installation of a shaft furnace having a storage lock chamber which is carried by a framework independent of the shaft furnace and which is connected to the shaft... | 11/07/1989 |
| 4820105 | Apparatus for charging a shaft furnace The apparatus comprises a distribution spout and a hopper which has two containers mounted thereabove provided with sealing valves and a metering member. In order to simplify the weighing system, the hopper is independent of the mouth of the furnace and i... | 04/11/1989 |
| 4714396 | Process for controlling the charging of a shaft furnace A process for controlling the charging of a shaft furnace of the type utilizing a distribution spout and one or more storage hoppers with each hopper being provided with a dosing device for regulating the flow of charging material from the hopper to the s... | 12/22/1987 |
| 4632623 | Workpiece manipulator for a hot environment A manipulator for a workpiece, useful in conjuction with a robot, is especially designed for handling forging preforms in a hot furnace. A fluidic type sensor is used to position the structure above a furnace surface on which the preform rests. Air contin... | 12/30/1986 |
| 4615720 | Method and apparatus for melting glass This invention proposes a method of controlling the melting rate of a glass furnace to obtain substantially constant molten glass throughput. The furnace contains a pool of molten glass and a relatively thin layer of unmelted glass batch on the surface of... | 10/07/1986 |
| 4588297 | Optical profile measuring method The profile of the upper surface of the material being processed in a blast furnace is determined by pulsing a laser beam at the surface while incrementally changing the angle of the emitter to the surface, along a predetermined path, and sensing reflecti... | 05/13/1986 |
| 4481890 | Method for controlling temperatures in the afterburner and combustion hearths of a multiple hearth furnace The present invention relates to a method for efficiently incinerating waste material, particularly dewatered sludge, in a multiple hearth furnace by controlling the temperature of the individual hearths of the furnace within certain prescribed limits by ... | 11/13/1984 |
| 4453950 | Coal gasification system with a modulated on/off control system A modulated control system is provided for improving regulation of the bed level in a fixed-bed coal gasifier into which coal is fed from a rotary coal feeder. A nuclear bed level gauge using a cobalt source and an ion chamber detector is used to detect t... | 06/12/1984 |
| 4445628 | Apparatus for sensing empty hoppers A gravity operated conical hopper having a sliding closure plate which is pneumatically activated as soon as the hopper has been emptied. An apparatus and method is also disclosed for pneumatically detecting and automatically closing the hopper to stop th... | 05/01/1984 |
| 4430963 | System for generating dry coal weight signal for coal feeder and control system based thereon A system for generating a dry coal weight signal is provided, wherein the moisture content of a coal feed to a solid fuel burner is determined, and the dry coal weight calculated on that basis. Moisture content is determined by measuring density of the co... | 02/14/1984 |
| 4395179 | Apparatus and method for charging material into a receptacle Apparatus and method are disclosed for charging particulate material of varying sizes into a shaft furnace, such as an oil shale retort or blast furnace, in which a highly uniform distribution of particle sizes of charge material and a desired height and ... | 07/26/1983 |
| 4352618 | Method of, and apparatus for preventing the unintended charging of coke oven chambers A method and an apparatus are described for preventing the unintentional introduction of coal from a supply into a coke oven which already contains a charge of coal or coke. An obstruction sensor is lowered through a charging hole in the ceiling of the ov... | 10/05/1982 |
| 4322197 | Process and installation for charging a shaft furnace Material to be deposited on the hearth of a shaft furnace serially passes through a pair of temporary storage containers positioned above the furnace. The uppermost storage container is in the form of a bin open to the ambient atmosphere while the lower s... | 03/30/1982 |
| 4268218 | Preventing the overcharging of coke ovens A method for preventing the overcharging of coal into a coke oven system in which preheated coal is transported from a storage container to the coke ovens by means of a substantially enclosed continuous conveyor system filled with inert gas. A portion of ... | 05/19/1981 |
| 4243351 | Method of and apparatus for charging a furnace An apparatus and process for introducing and distributing a charge within a shaft furnace, the shaft furnace charging apparatus comprising an elongated charge distribution chute, the angle of which being adjustable in relation to the vertical axis of the ... | 01/06/1981 |
| 4202733 | Process and apparatus for preheating coal intended for use in coking installations Coal is preheated prior to passing it into a coking installation by feeding measured amounts of the relatively wet coal into and through one or more circulation dryers heated to an elevated temperature and collecting the hot coal in a collecting bin and a... | 05/13/1980 |
| 4189272 | Method of and apparatus for charging coal into a coke oven chamber Coke is charged into a coke oven chamber by positioning a filling hopper over an opening in the roof of the chamber and evacuating the chamber. A filling tube is lowered from the hopper to the bottom of the chamber and coal is fed from the hopper through ... | 02/19/1980 |
| 4181459 | Conveyor protection system In the handling and charging of pre-heated coal, the coal is transported from a coal storage container to the oven chambers by an enclosed continuous conveyor system. The coke oven chambers are charged individually in a continual manner by transporting a ... | 01/01/1980 |
| 4151047 | Feed installation for apparatus for extracting hydrocarbons from bituminous schists Apparatus for feeding bituminous schist to a series of retorts each equipped with a rotary distribution spout and a central feed channel, the retorts radiating from a central schist distributing tower. At least one hopper communicates with a central feed ... | 04/24/1979 |
| 4094494 | Furnace charge profile measuring process and apparatus The surface contour of material deposited on the hearth of a furnace is sensed by measuring the height of the material on the furnace axis and at a plurality of points about the periphery of the furnace. The height on the furnace axis is measured with an ... | 06/13/1978 |
| 4075972 | Apparatus for thermal diffusion of semiconductor devices The invention discloses an apparatus for thermal diffusion of semiconductor devices, wherein a plurality of wafer boats each made of a refractory material and adapted to carry a predetermined number of wafers to be processed are sequentially fed into a fu... | 02/28/1978 |
| 4073628 | Control system for apparatus to gasify fine-grain fuels in a reactor Fine-grain fuel is delivered from pressure vessels with a vehicle gas as a fluidized flow into a reactor for gasification at an elevated pressure. A gaseous gasification agent is also fed into the reactor. A control system for the fine-grain fuel and gasi... | 02/14/1978 |
| 4067452 | Charging apparatus for receptacle Disclosed is charging means for a shaft furnace such as an oil shale retort or blast furnace comprising a stationary outer distributor member having a donwardly converging inner wall and a movable member having upwardly converging upper wall, which latter... | 01/10/1978 |
| 4058230 | Arrangement for pneumatically regulating the introduction of substances into chambers An arrangement for regulating the introduction of substances into chambers is disclosed and is particularly well-suited for the feeding of coal into coke ovens. The arrangement includes a chamber which is to be filled to a predetermined level and a feedin... | 11/15/1977 |
| 4050592 | Charging apparatus for shaft furnaces Apparatus for charging material into a shaft furnace, such as a blast furnace. The apparatus includes gas lock means for introducing charge material into the furnace while the furnace is under gas pressure, and distributor means below the gas lock means t... | 09/27/1977 |
| 4049141 | Method of charging a plurality of coking ovens A plurality of coking ovens are arranged in a horizontal row, and an endless scraper conveyor is mounted above the charging holes of the ovens and has an upper run and a lower run. A quantity of coal is admitted onto the lower run of the conveyor at one e... | 09/20/1977 |
| 4029220 | Distributor means for charging particulate material into receptacles Disclosed are receptacles, such as shaft furnaces illustrated by a blast furnace and an upright oil shale retort, embodying rotatable charge distributor means for distributing particulate charge material in the furnace, which charge distributor means can ... | 06/14/1977 |
| 4026427 | Charging apparatus for receptacles Apparatus for charging material into a shaft furnace, such as a blast furnace. The apparatus includes gas lock means for introducing charge material into the furnace while the furnace is under gas pressure, and distributor means below the gas lock means t... | 05/31/1977 |
| 4017269 | Method and arrangement for gasifying finely divided fluidized solid combustible material The arrangement includes a source of finely divided solid combustible material fluidized in an inert gas, and also a source of combustion-supporting gas, such as oxygen, air, or oxygen-enriched air. A gasifier is provided for gasifying finely divided soli... | 04/12/1977 |
