Class 373/136 - Temperature

Subclass of Class 373 - Industrial electric heating furnaces
Definition: Subject matter including means to control the temperature of the furnace.
No. of patents: 30
Last issue date: 06/18/2002

Number	Title	Issue Date
6407367	Heat treatment apparatus, heat treatment process employing the same, and process for producing semiconductor article A novel heat treatment apparatus is provided which comprises a first tube, a second tube placed therein, and a heater. A semiconductor article is heat treated in the second tube in an atmospheric gas. At least an internal face of the second tube is constr...	06/18/2002
6239415	Process and apparatus for measuring enthalpy changes by means of differential thermal analyzer (DTA) apparatus, operating with quasi-isothermal heating technique In a thermal analysis process for investigating thermal phase transformations, a sample and a reference substance are placed into a furnace with rising temperature of a predetermined rate operated by a programmed temperature controller. The temperatures o...	05/29/2001
6225602	Vertical furnace for the treatment of semiconductor substrates The treatment chamber in the furnace is delimited by a liner of refractory material. In order to increase the life thereof and in particular to restrict the sensitivity to deposits deposited by the process gas fed through the furnace, it is proposed to ma...	05/01/2001
5900177	Furnace sidewall temperature control system A vertical rapid thermal processing (RTP) system (10) is provided, comprising a vertical process chamber (20) extending along a longitudinal axis (X), and a movable platform (32) disposed within the process chamber and having a support surface upon which ...	05/04/1999
5698158	Vacuum distillation apparatus for producing ultra high purity material Ultra high purity materials, particularly metallic materials such magnesium and similarly high volatility materials, are produced by a vacuum distillation method and apparatus to increase purity by approximately five hundred times in a single step. For ex...	12/16/1997
5676869	Vertical heat treatment apparatus A vertical heat treatment apparatus is provided with a cylindrical insulating layer surrounding the periphery of a vertical processing chamber accommodating objects to be subjected to thermal processing and a resistance heating member provided along the i...	10/14/1997
5616264	Method and apparatus for controlling temperature in rapid heat treatment system A temperature control method in a rapid heat treatment apparatus comprising simulatively heating dummy wafers in a process tube and previously detecting and grasping by temperature sensors a wafer temperature rising pattern, a heater temperature rising pa...	04/01/1997
5597501	Precision control of high temperature furnaces using an auxiliary power supply and charged practice current flow Two power supplies are combined to control a furnace. A main power supply heats the furnace in the traditional manner, while the power from the auxiliary supply is introduced as a current flow through charged particles existing due to ionized gas or therm...	01/28/1997
5406582	Apparatus and process for activation and reactivation of carbon by electrical resistance heating in the presence of steam An apparatus and process for the activation or reactivation of carbon in a tubular reactor that consists of two or more sequential sections, each section containing a descending column of carbon, with inlets to introduce steam into any one or more of the ...	04/11/1995
5389550	Organic substance analyzing method and apparatus using portable construction An organic substance analyzing method is disclosed. A sample container 21 charged with a granulated rock sample is installed in a thermal cracking furnace 1. The thermal cracking furnace 1 is connected to a vacuum suction line 27 to be evacuated until a s...	02/14/1995
5365043	High heat microwave oven system with temperature sensor A high speed microwave high temperature oven system mounts an enclosed furnace in its cavity and extends a temperature probe therein. A controller regulates the furnace temperature by periodically interrupting over a range, the operation of the magnetron ...	11/15/1994
5293404	Thermal measuring and testing system having synchronized sample transporting means A thermal analysis device with a sample transporting machine which automatically carries out pretreatment of a sample to quickly heat or cool it. The configuration includes an electric furnace, a temperature controller, a temperature program setter, a sam...	03/08/1994
5231645	Method of controlling continuous carburization furnace In the continuous carburization furnace in which the temperature of the heaters can be controlled individually at every carburization processing position; carburization reference data at each carburization processing position is read; a temperature and ca...	07/27/1993
5003160	Reflow furnace control system A reflow furnace control system is contemplated to give an optimum time-temperature profile of an object intended to be heated. The object is carried on a conveyor to move along a conveyor path in the reflow furnace during which it is heated by heaters di...	03/26/1991
4897526	Kiln automatic power level switching and display mechanism A kiln firing cycle controller is disclosed which automatically cycles a hobbyist kiln through its low, medium, and high power level phases. The exemplary embodiment includes a control panel having a firing cycle initiating control knob. Manipulation of t...	01/30/1990
4746344	Fiber forming bushing and method for providing A fiber glass bushing having a thermocouple embedded in the bottom thereof and a method of preparing the same is described. The thermocouple is carried in a plate member which is welded to the bushing bottom by a weld on the outside of the busing....	05/24/1988
4738700	Method and apparatus for controlling temperature in a fiber glass forming bushing An apparatus for more accurately measuring the temperature of a fiber glass forming bushing is described which includes the placing of sidewall and bottom thermocouples in locations on the bushing so that electrical signals representing noise are eliminat...	04/19/1988
4603730	Multiple module furnace system There is disclosed a multiple module furnace and system for aerospace application useful for conducting high temperature experiments and treatments of materials, particularly for alloying of metals. The furnace comprises a frame having a plurality of rece...	08/05/1986
4553853	End point detector for a tin lead evaporator A monitoring technique is disclosed for determining when the end point has been achieved in the evaporation of the constituents from an alloy such as a tin lead alloy. An optical pyrometer or other temperature sensing device, is focused on a crucible in w...	11/19/1985
4492587	Method of fusing vanadium pentoxide powder In the fusion of vanadium pentoxide powder heat is generated in a melt of the powder by passing an electrical current along a current path in the melt and additional vanadium pentoxide powder is fed onto the surface of the melt. A furnace is used which ha...	01/08/1985
4459103	Automatic volatile matter content analyzer An analyzer is provided for use in determining the volatile matter content of coal and coke. The analyzer automatically adjusts a position of a crucible containing a coal or coke sample relative to a furnace depending upon the temperature of the crucible....	07/10/1984
4426569	Temperature sensor assembly An effusion cell assembly is disclosed and includes a temperature sensor designed to balance sensor temperature and cell crucible temperature by an increased heat radiation collection....	01/17/1984
4404461	Method and apparatus for controlling an analytical furnace A control system for applying operating power to an analytical furnace includes a first circuit providing output signals consisting of a series of binary bits in a predetermined pattern with each bit corresponding to a unit of power to be applied to an an...	09/13/1983
4390290	Temperature sensor for a resistance furnace An apparatus for reducing the leakage current error from a resistance furnace includes a grounded electrically conductive member, an electrically insulating, thermally conductive member adjacent thereto, which thermally conductive member is contacted by a...	06/28/1983
4377347	Method for measuring temperature of molten metal received in vessel A method for measuring the temperature of molten metal received in a vessel, which includes covering the tip portion of a probe which includes a thermocouple housed in an alumina protecting tube, from inside to outside with a ceramic fiber and a quartz gl...	03/22/1983
4281985	Automatic thermocouple positioner for use in vacuum furnaces The invention is a simple and reliable mechanical arrangement for automatically positioning a thermocouple-carrying rod in a vacuum-furnace assembly of the kind including a casing, a furnace mounted in the casing, and a charge-containing crucible mounted ...	08/04/1981
4195820	Precise thermal processing apparatus Disclosed is apparatus for subjecting a workpiece to a controlled temperature comprising a light-weight muffle of high diffusivity material having an interior high emissivity surface, an air cooled envelope surrounding the muffle having an infrared reflec...	04/01/1980
4185160	Electric slot furnace An electric slot furnace for heating metal bars to a forging temperature includes four corner posts from which a hearth and a hot box are independently supported with a layer of insulation located therebetween, the hot box being connected to the posts by ...	01/22/1980
4086424	Dynamic gradient furnace and method A dynamic gradient furnace in which a plurality of heating zones along an axis of the furnace are controlled sequentially to provide a moving temperature gradient profile through the heating chamber of the furnace....	04/25/1978
4061870	Temperature control system A system for controlling the temperature and/or temperature distribution in a semiconductor diffusion furnace. The temperature and/or temperature distribution inside the reactor tube of the furnace is directly detected by thermocouple means inserted in th...	12/06/1977

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Class 373/136 - Temperature