| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 373109000 | RESISTANCE FURNACE DEVICE | 18 |
| 20120140788 | ELECTRODE HOLDER ASSEMBLY AND FURNACE COMPRISING SAME - In an embodiment, an electrode holder assembly ( | 06-07-2012 |
| 20130128913 | ELECTRICALLY POWERED INDUSTRIAL FURNACES HAVING MULTIPLE INDIVIDUALLY CONTROLLABLE POWER SUPPLIES AND SHORTENED CABLING REQUIREMENTS - An electrically powered industrial furnace uses a number of distributed, highly compact power supplies physically located generally immediately adjacent to each of the furnace electrical terminals, so that cabling and bus-bars can essentially be eliminated. In addition, each heating element has its own dedicated and independently controllable power supply which can automatically adjust for varying resistances in the single connected heating element and/or short cabling, to achieve a precisely uniform temperature within the furnace. | 05-23-2013 |
| 373110000 | With internal atmosphere control (e.g., pressure, vacuum, etc.) | 2 |
| 373111000 | Having tubular charge containing or supporting element | 1 |
| 20090067470 | METHOD FOR HEAT TREATMENT OF POWDERY MATERIALS - The present invention relates to a method for heat treatment of powdery products ( | 03-12-2009 |
| 373112000 | Vacuum | 1 |
| 20150049781 | Center Heating Element for a Vacuum Heat Treating Furnace - A vacuum heat treating furnace for the heat treatment of metal parts includes a pressure vessel and a hot zone enclosure that defines a hot zone therein. A heating element array inside the hot zone enclosure includes a first heating element, a second heating element, and a center heating element. The first and second heating elements are suspended on opposing sides of the hot zone enclosure. The center heating element is suspended vertically from the hot zone enclosure between the first and second heating elements. The center heating element is adapted to be connected to the first and second heating elements to form a continuous circuit therewith. The center heating element may be connected to the first and second heating elements with removable/reusable fasteners to provide for reconfiguration of the hot zone to accommodate different size workloads. | 02-19-2015 |
| 373113000 | For cooling | 3 |
| 20110194583 | Shaft High Temperature Continuous Graphitizing Furnace - The present invention provides a shaft high temperature continuous graphitizing furnace comprising a furnace body comprising a feeding inlet and a discharging outlet, an electrode pair, a cooling system and a discharging device; the furnace body is designed to be a shaft cylindrical structure; the electrode pair is provided within the furnace body and comprise an upper electrode and a lower electrode, the upper electrode is located below the feeding inlet, and an umbrella or cone table shape electric field having a lower cross section area greater than its upper cross section area arises between the upper electrode and eh lower electrode; and the cooling system is located between the lower electrode and the discharging outlet. For the shaft high temperature continuous graphitizing furnace of the present invention, a perpendicularly placed column electrode is used as the upper electrode, a horizontally placed circular hollow electrode is used as the lower electrode, an umbrella high temperature area is formed between the electrode pair, and the natural flow law of an object is used to have materials pass a high temperature graphitizing area and then discharged, which ensures the quality of the product. | 08-11-2011 |
| 20120269226 | Diffusion Furnaces Employing Ultra Low Mass Transport Systems and Methods of Wafer Rapid Diffusion Processing - Multi-zone, solar cell diffusion furnaces having a plurality of radiant element (SiC) or/and high intensity IR lamp heated process zones, including baffle, ramp-up, firing, soaking and cooling zone(s). The transport of solar cell wafers, e.g., silicon, selenium, germanium or gallium-based solar cell wafers, through the furnace is implemented by use of an ultra low-mass, wafer transport system comprising laterally spaced shielded, synchronously driven, metal bands or chains carrying non-rotating alumina tubes suspended on wires between them. The wafers rest on raised circumferential standoffs spaced laterally along the alumina tubes, which reduces contamination. The high intensity IR flux rapidly photo-radiation conditions the wafers so that diffusion occurs>3× faster than conventional high-mass thermal furnaces. Longitudinal side wall heaters comprising coil heaters in Inconel sheaths inserted in carrier tubes are employed to insure even heating of wafer edges adjacent the side walls. | 10-25-2012 |
| 373114000 | Terminal | 1 |
| 20150369540 | CONTACT PLATE FOR AN ELECTRODE OF AN ELECTRO-METALLURGICAL FURNACE AND METHOD FOR PRODUCING SUCH A PLATE - A contact plate intended to be brought into contact with the wall of an electrode of an electro-metallurgical furnace, comprising an internal channel having an inlet and at least one outlet which can be linked respectively to an external supply conduit and at least one external discharge conduit for a fluid. According to the invention, at least one elongate hole ( | 12-24-2015 |
| 373117000 | With heating element detail | 9 |
| 20130058372 | MODULAR HEATER - A modular heater is disclosed, including multiple heater modules. The heater modules can include mating features, such as a tongue and groove seal, and/or soft seal, to prevent radiation, thermal convection and thermal conduction leakage. The heater module can also include heater elements, together with supports and expansion room for the heater elements. | 03-07-2013 |
| 20130202007 | HEATING CONDUCTOR ARRANGEMENT - An electrical heating conductor arrangement for heating a furnace has one or more strip-shaped portions with a generally horizontal sheet-like extent. The strip-shaped portions are formed by individual bands which have along their width an arcuate curvature with respect to a horizontal plane. The individual bands are partially mounted by at least one bearing element pivotably in the longitudinal direction of the respective band. | 08-08-2013 |
| 373118000 | Resistance crucible | 2 |
| 20100265985 | Insulation Package For Use In High Temperature Furnaces - A high-temperature furnace for melting materials, e.g. silicon, wherein the furnace comprises a vessel having a wall which defines an inner chamber. A crucible containing the material to be melted is positioned inside of the chamber and heating means is arranged around the crucible. An insulation package is provided in the chamber for protecting the vessel wall from the heat generated by said heating means. Specifically, the package comprises a support ring of insulation mounted in the chamber, a sleeve of insulation supported on the ring and extending upward between the heating means and the vessel wall, a catch tray adapted to receive any material which may leak from the crucible during heating mounted through the support ring, and a top and a lower layer of insulation to thermally seal the crucible within the package during heating. | 10-21-2010 |
| 20120213244 | VACUUM CLEANING STRUCTURE FOR ELECTRODE FURNACE - An electrode for a resistance analytical furnace has a crucible-engaging surface and an end spaced from the crucible-engaging surface having a plurality of grooves formed therein. A manifold mounted on the end of the electrode defines a dust recovery plenum and includes an outlet communicating with the plenum for coupling to a vacuum source to remove debris from the electrode. The improved electrode and electrode cleaning manifold positioned on the electrode provides a turbulent airflow for removal of dust and debris from an analytical furnace. | 08-23-2012 |
| 373127000 | Having resistance encasement means | 1 |
| 20100290499 | ELECTRIC HEATING DEVICE - Electric heating device comprising a radiant tube and an electrical heating element arranged in the radiant tube as well as a protective insert of electrically conductive material. The protective insert is arranged between the radiant tube and the electrical heating element. The device allows the use of higher element power. | 11-18-2010 |
| 373128000 | Mounting | 3 |
| 20100278208 | FASTENING MEANS FOR TERMINALS FOR ELECTRICAL RESISTANCE ELEMENTS - A suspension arrangement for terminals for electrical resistive elements, which terminals pass vertically through a body and are attached relative to the upper surface of the body, which terminals pass over into the hot zone of the resistive element in the form of a shank element, which extends downwards from the terminals, where one or several of the shanks of the hot zone is or are supported by hooks attached to the lower surface of the body. The suspension arrangement for each one of the terminals includes a first attachment attached relative to the upper surface of the body and a second attachment attached relative to the terminal. A spring arrangement passes between the first and the second attachment, which spring arrangement is arranged such that the second attachment is mobile in the vertical direction relative to the first attachment. | 11-04-2010 |
| 20150334778 | High temperature vacuum furnace heater element support assembly - An electrical insulating and heating element support assembly for a high temperature vacuum furnace having a threaded support rod for connecting a heating element to the insulated hot-zone support ring in an electrically non-connected position includes insulator sleeves and washers surrounding the rod in contact with a series of refractory metal washers which may include graphite and/or molybdenum as shielding liners used to protect electrical insulators from having electrical short path means due to deposition of conductive materials onto the non-conducting insulators, and the use of threaded nuts and bushings to anchor the rod and shielding arrangement within the furnace hot zone. The non-conducting insulators and washers are made from materials with high thermal and electrical resistance, such as preferably alumina or mullite, and radially surround the support rod and the heating element. The electrically non-connected shielding washers and nuts, and the rod can be made from graphite or molybdenum, and are designed to be easily disassembled in order to provide relatively easier maintenance service to the vacuum furnace. This design accomplishes the dual objective of supporting both the heating element and the high temperature insulation support ring while remaining electrically non-connected from the heating element. It also allows for variations in thickness of the furnace insulation and heating elements which is common for different furnace designs. This new stand-off assembly is designed to be easily disassembled in order to provide faster maintenance turnaround time and reuse of the stand-off hardware. Another equally important advantage of this design is the absence of holes in the support rod for the placement of pin retainers, and the elimination of the pin retainers, commonly found in prior art vacuum furnace heater element support assembly designs. | 11-19-2015 |
| 373130000 | Side wall | 1 |
| 20100111132 | INSERT AND A HEATER ELEMENT FOR ELECTRICAL FURNACES - This invention relates to an insert intended for electrical furnaces and of the type that comprises, on one hand, an insulating shell having an outside and an inside having a rotationally symmetrical, e.g., cylindrical shape, and on the other hand a heater element that is arranged inside the shell and extends a plurality of turns in a continuous loop having an overall shape corresponding to the rotationally symmetrical shape of the shell. According to the invention, the wire loop comprises a plurality of spaced-apart bends, which divide the same into a plurality of individual sections of limited length to which occurring thermal expansion is isolated locally. In a preferred embodiment, the bends are U-shaped to impart the wire loop meander shape. In an additional aspect, the invention also relates to a heater element as such. | 05-06-2010 |
| 373132000 | Non-metallic resistor | 1 |
| 20140023106 | HEATING ELECTRODE ASSEMBLY FOR CRYSTAL GROWTH FURNACE - A heating electrode assembly for a crystal growth furnace includes: a heat insulation board unit that is disposed between a furnace wall and a heater, that includes a first surface facing the furnace wall and a second surface facing the heater, and that is formed with a hole extending through the first surface and the second surface; an electrode unit that includes an electricity input portion mounted to the furnace wall, a post portion disposed in the hole, and an abutment flange connecting the post portion and the heater; and an electrical insulating unit including a tubular sleeve that is disposed in the hole and that surrounds the post portion, and a pad that is clamped between the abutment flange and the second surface. | 01-23-2014 |
| 373135000 | Control | 1 |
| 20140153606 | HIGH TEMPERATURE FURNACE HAVING RECONFIGURABLE HEATER CIRCUITS - The core of a high temperature furnace has an elongated central test cavity for testing/calibration of a temperature-sensitive component, such as the probe of a thermocouple. At least three electrical heating elements as positioned adjacent to the test cavity, including two elements adjacent to the opposite end portions of the test cavity, respectively, and a center element between the end elements. A uniform temperature profile is maintained in the cavity by control circuitry that manages the supply of electrical power to the heating elements, by periodically configuring interconnections of the elements during multiple phases of a duty cycle. The duty cycle includes a first phase in which current is passed through the center element, a second phase in which current is passed through the end elements in series, and a third phase in which current is passed through one of the end elements and also through the center element without passing current through the other end element. | 06-05-2014 |
| 373137000 | Lining | 1 |
| 20110085581 | Insulation Package for Use in High Temperature Furnaces - A high-temperature furnace for melting materials, e.g. silicon, wherein the furnace comprises a vessel having a wall which defines an inner chamber. A crucible containing the material to be melted is positioned inside of the chamber and heating means is arranged around the crucible. An insulation package is provided in the chamber for protecting the vessel wall from the heat generated by said heating means. Specifically, the package comprises a support ring of insulation mounted in the chamber, a sleeve of insulation supported on the ring and extending upward between the heating means and the vessel wall, a catch tray adapted to receive any material which may leak from the crucible during heating mounted through the support ring, and a top and a lower layer of insulation to thermally seal the crucible within the package during heating. | 04-14-2011 |
