Abstract: A flexible vertebra-like heating element useful in a hot runner housing of an injection molding machine including method of manufacture and method of installation.

Abstract: In a hot runner system for injection molding, a runner block (10) has a bore (14) in a casing (12) for facewise insertion of a heatable cartridge (16) comprising a core member (30) with an inside runner (34). A flow tube (32) having flow passages (35, 36) at its face ends and/or at its periphery carries an electrically insulated (39) heating coil (38) overcast with a thermoconductive mass (V) containing aluminium. Abutting members (18) seal the runner block (10) axially. Spaced radial supports (40, 49, 69) project over the outer diameter (D) of the core member (30), hollows or recesses (41, 44) serving for minimum heat transfer at the bearing area. An outer sleeve body (20) of the flow tube (32) may have sections (21 to 24) with a recessed central portion (46) sealingly engaging a collar-type support (40). Narrow peripheral ribs (42, 50) axially separate ring pockets (41) and outer compartments or spaces (52).

Abstract: A terminal connector for a heated window, a heated window provided with a plurality of terminal connectors constructed and arranged for simultaneous engagement to corresponding terminals of a multiple terminal housing and a method of assembling a heated window provided with at least two of said terminal connectors in a terminal connection area along a side edge of said heated window.

Abstract: A coaxial-type heater cable is described for significantly reducing both electromagnetic and electrostatic field while maintaining a flexible heater cable structure by enclosing coaxial arranged inner and outer conductors with a conductive polymer layer that is in electrical contract with the outer conductor. The outer conductor is helically wrapped around the inner conductor with the number of turns per unit length selected to significantly reduce the electromagnetic field emanating from the heater cable while the conductive polymer layer significantly attenuates any electrostatic field that would otherwise fringe through spaces between successive turns of the outer conductor. The heater cable can be of the self-regulating type using a PTC material in electrical contact with and between the inner and outer conductors.

Abstract: A self regulating heated switch assembly is provided for heating the interior of a switch housing so as to prevent freezing of switch contacts therein. The switch assembly includes a switch housing, an insulative cover member, and a PTC heater device. The switch housing includes top, bottom, front, rear and end walls. The insulative cover member is formed of opposed front and rear panels. The front and rear panels are disposed in a spaced apart relationship to the corresponding front and rear walls of the switch housing. The heater device is sandwiched between the front wall of the switch housing and the front panel of the cover member and between the rear wall of the switch housing and the rear panel of the cover member so as to transmit heat into the interior of the switch housing.

Abstract: A resistance adjusting type heater has a honeycomb structure having a large number of passages, at least two electrodes to enable electrical heating of the honeycomb structure provided on the honeycomb structure, and a resistance adjusting means, a slit, provided between the electrodes. The thicknesses of passage walls at the portions of the honeycomb structure at which electricity flows at a very high density are increased with a conductive material to prevent the abnormal heat generation at the portions of the honeycomb structure.

Abstract: A sheathed heater wherein before the sheathed heater is assembled, an oxide film is formed on the inner peripheral surface of a metal pipe, and/or the outer surfaces of an internal heater and lead pins thereof which are inserted into the metal pipe by heating them in the presence of oxygen or by applying chemicals thereto, and a heat resistent insulation material member is filled in a space formed between the metal pipe and the internal heater. The color of the oxide film thus formed is light brown, brown or black.

Abstract: A radiant heater with partly embedded and otherwise projecting heating coils (16) is produced in that the coils (16) are placed in grooves (14) of a tool or mould (13), the interior of the heating coils is partly filled with a filling material (17) and then the dry, pourable insulating material is pressed thereon. Thus, the filling material forms a counter-die and is removed on taking the compressed insulator (21) out of apparatus (11) in that it drops between the heating coils.

Abstract: Novel method and structure is disclosed for strengthening and mounting sloted metallic honeycomb structures by positioning rod members within the slots to prevent the slots from closing or deforming, and by utilizing the rod members to precisely engage positionable restraining inserts of an enclosing housing, so as to accurately mount the honeycomb structure within the housing.

Abstract: A household coffeemaker comprises a cold water reservoir (1) supplying a water heater (2) of the circulating type whose outlet is connected to a water channel (3) of a coffee filter (4). The water heater comprises a heating resistance (7) whose supply circuit is connected to the terminals (8) of a source of alternating current. The supply circuit of the resistance (7) comprises a device (11) for changing the electric power supplied to the resistance (7) so as to supply, during a first so-called pre-steeping phase, a low power to obtain a low flow rate of hot water, and during a second so-called infusion phase, a higher power to obtain a higher flow rate of hot water. The invention is applicable to drip coffeemakers.

Abstract: The invention relates to the welding of components made of heat-fusing plastic, using an electrical heating resistor arranged in the thickness of a connection component.According to the invention, the resistor is a thin electrically conductive layer advantageously formed on a supporting film made of heat-fusing plastic and capable of causing the tearing of the layer at a specific temperature corresponding to the welding temperature of the components.The invention is used particularly for the thermal welding of polyethylene pipes used in the gas industry.

Abstract: An electrical resistance heating element includes a pair of spaced apart electrical conductors, and a strip of resistive material disposed between the conductors and extending along their lengths. A strip of heat-sensitive, electrically conductive material is also disposed between the conductors and also extends along their lengths. The strips of resistive material and heat-sensitive, electrically conductive material together provide an electrical path between the conductors widthwise along their lengths. The heat-sensitive strip interrupts an electrical path between the conductors and widthwise through the resistive material strip only over portions of the resistive material strip which attain a predetermined temperature.

Abstract: An electrical control system for an electrically heated window in a motor vehicle has a voltage source including a generator, a voltage regulator for regulating a generator output voltage, a transformer switched between the generator and a heating window, the generator output voltage being increased before supplying to the heatable window, and a unit for measuring a temperature of the transformer and interrupting a communication between the transformer and the voltage source in the event of exceeding an adjustable limiting temperature.

Abstract: The instant invention relates to the arrangement of one or several connection layers for an electric resistance heating system installed on the film-laminated inside of covering fabrics, said heating system being sealingly connected by bonded or glued additional films, which is assigned to the seat and/or backrest surface, in particular the construction of seat and backrest elements of vehicle seats. The tension release is installed at a distance from the plane of the heat conductors for the attachment of the connection cable, whereby the distance between the plane of the heat conductors, namely of the covering film and the tension release is set by a blank of foamed material that is made of a formed material or some other elastic material and installed at a predetermined location.

Abstract: A heater comprises a substrate and an electrically conductive heating section having branched portions on its lateral edge. The heating section has notches at those portions of its lateral edges that are opposite to the branched portions. The notches increase electric resistance of the heating section at the branched portions to enhance heat generation of the heating section at the branched so that the heating section is heated at a predetermined temperature over the entire length of a transfer paper sheet.

Abstract: A device for accelerating the action of common expansive mortars (M) (used as a replacement for explosive products for demolition and cutting operations on blocks of rock or concrete) comprises at least one heating element (1), which is introduced into the hole (3) within the action of the mortar (M) is to be exerted, in order, to heat the mass of said mortar (M) sufficiently to accelerate the chemical reactions which determine the expansion thereof.

Abstract: Six curved hanging electrical heater panels made of tungsten or molybdenum are arranged to form a hollow cylinder, and are supported at their upper ends by electrical connectors. The hanging panels are electrically interconnected at adjacent lower corners by removable links. Six phase electrical current is applied to the hanging panels through the respective upper connectors, with phases of opposite polarities being applied to diametrically opposed panels. The net current flow through the removable links is zero, enabling the links to be designed to fail electrically and/or mechanically before the panels, thereby protecting the panels from electrical burnout and mechanical damage. Each removable link includes a unique arrangement of a link member, two pins, and a wedge which tightly interlocks the pins, link member and panel corners together.

Abstract: A tungsten halogen lamp producing infra red radiation, for example for cooking or heating, has an envelope of high silica content material sealed at each end by a pinch seal. A gas fill is at a room temperature pressure of 250-750 mm Hg. A portion of the envelope at each end is clear and the rest contains an opacifier which reduces transmission of visible light. A suitable opacifier is red, being produced by the reduction of copper oxide dispersed in the high silica content material. The envelope is produced by butt joining clear end sections and a tube of material containing opacifier.

Abstract: A thin high temperature heater includes an adhesive layer of Ti disposed an insulating substrate and a resistor layer of a Ti compound disposed the adhesive layer.

Abstract: Electrode blocks and multiple-piece assemblies are provided for electric, glass-melting furnaces to reduce the occurrence and extent of cracking which occurs in monolithic electrode blocks from thermal stresses induced by a high temperature gradient between such blocks or the block assembly and a fluid-cooled electrode and from thermal shock encountered in repositioning the electrode. An insert block of a high thermal stress and glass corrosion/erosion resistant refractory material is configured to receive an electrode assembly. A holder block, which may be of the same material or another material, including a material having less thermal stress strength or less glass corrosion/erosion resistance than the insert block material, has a passageway therethrough to receive at least part of the insert block with electrode assembly therethrough.