Patent application number | Description | Published |
20080277921 | Method and a Sleeve for Joining Two Components - A method of joining at least two components ( | 11-13-2008 |
20090020519 | Method to supply electric current to a tube furnace - A method of and an arrangement for transmitting electric current to a furnace that is heated, either completely or partially, by electric current conducted in the furnace wall. The current is conducted through electrically conductive devices connected to the furnace wall. At least one of the devices in proximity to the furnace wall includes a section that has a smaller cross-sectional area than the remainder of the device. The current flow through the smaller cross-section develops heat in the region of the smaller section of a magnitude that corresponds substantially to the heat magnitude that would have been conducted from the furnace wall to the electrically conductive device in the absence of the smaller cross-sectional area. | 01-22-2009 |
20100059499 | HEATER ELEMENT AS WELL AS AN INSERT FOR ELECTRICAL FURNACES - Insert for electrical furnaces comprising an insulating shell and a coiled heater element, the heater element comprising element wire that consists of at least two sections that are interconnected via a bend of element wire in such a way that the bend and the sections mutually form a loop of element wire. A fastening member is fixedly anchored in the insulating shell and arranged in the area of the bend in such a way that the element wire in a section directly connected to the bend is prevented from expanding past the fastening member. | 03-11-2010 |
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 |
20100193504 | ELECTRICAL HEATING ELEMENT FOR VERTICAL INSTALLATION - An electrical heating element for vertical installation, includes vertically suspended electrical resistance elements for heating furnaces in industrial operation, each element having conductive legs, where along the length of the element there are placed ceramic disks provided with holes, through which holes the relevant legs of the element pass, where the ceramic disks are arranged between ceramic tubes and where an upper metallic central rod is positioned within the ceramic tubes, which central rod supports the element and where the element is surrounded by a radiative tube. There are a number of upper ceramic tubes outside of the upper central rod, with intermediate ceramic disks. The central rod extends a certain distance down into the radiative tube. A number of lower ceramic tubes with intermediate ceramic disks are positioned outside of a lower central rod. | 08-05-2010 |
20100289194 | THE USE AND METHOD OF PRODUCING A DISPERSION STRENGTHENED STEEL AS MATERIAL IN A ROLLER FOR A ROLLER HEARTH FURNACE - A roller for a roller hearth furnace comprising a dispersion strengthened steel is disclosed. The roller does not require any coating or reconditioning. | 11-18-2010 |
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 |