Abstract: A coated graphite heater. The heater has a configuration comprising a plurality of heating elements having a major portion disposed parallel to an upper surface of the heater so that the major portion is disposed horizontally. The heater configuration provides a heater that exhibits reduced thermal stress and/or reduced CTE mismatch stress particularly compared to designs having heating elements with a major portion oriented perpendicular to the plane of the upper surface of the heater.

Abstract: A system that provides notice of a lost signal. A wireless device and a control device employ radio frequency identification (RFID) technology, which uses radio frequency signals to communicate with one another via communication link having a reception range. The control device transmits a signal to the wireless device via the communication link. The wireless device responds by transmitting a return signal via the communication link. The control device processes the return signal to determine if the wireless device is within the reception range, if not, the control device provides an audible, written or visual alarm.

Abstract: A track rail heating assembly that is adapted to position a heater element in spaced relation proximate to a surface of a track rail of a railroad. The assembly includes at least one heating element, and a housing that is operable to at least partially surround the heating element while positioning the heating element near to track rail. The hood positions the heating element relative to the rail section such that a gap exists between the heating element and the rail section. As the heating element does not contact the rail, the heating element cannot form an electrical by-pass for signals passing through the rail section. The assembly further incorporates a flexible barrier that at least partially isolates a side surface of the track rail from ambient conditions to reduce heat loss.

Abstract: A method of operating a heating plate for a substrate support assembly used to support a semiconductor substrate in a semiconductor processing apparatus, wherein the heating plate comprises power supply lines and power return lines and respective heater zone connected between every pair of power supply line and power return line. The method reduces maximum currents carried by the power supply lines and power return lines by temporally spreading current pulses for powering the heater zones.

Abstract: A substrate heat treatment apparatus includes a heat-treating plate having a flat upper surface, support devices formed of a heat-resistant resin for contacting and supporting a substrate, a seal device disposed annularly for rendering gastight a space formed between the substrate and heat-treating plate, and exhaust bores for exhausting gas from the space. The support devices are formed of resin, and the upper surface of the heat-treating plate is made flat, whereby a reduced difference in the rate of heat transfer occurs between contact parts and non-contact parts on the surface of the substrate. Consequently, the substrate is heat-treated effectively while suppressing variations in heat history over the surface of the substrate.

Abstract: An electric grilling device with partial high-temperature heating function has an electric heating tube installed on the bottom of a grilling plate. The electric heating tube is bent into an intensive distribution structure shape and the bottom of the grilling plate has an embedding groove corresponding to the shape of the electric heating tube. The electric heating tube is installed in the embedding groove. The surface of the grilling plate corresponding to the intensive distribution structure of electric heating tube is defined as high-temperature region. This structure has a partial high-temperature function of the grilling plate and satisfies the different temperature requirements of grilling different food. The device utilizes the energy more efficiently to overcome the shortages of conventional electric grilling devices wherein temperature of the grilling plate is relative low. The structure of the device is simple and it is easy to operate.

Abstract: A heater strip for use as a heating element in an electric heater is made up of a profiled strip made of a flat metallic material forming a resistor section and of mounting elements extending over one common longitudinal side and they are manufactured as one piece with the resistor section for mounting the heater strip to a support. The strip has a zigzag-shaped structure. The mounting elements are provided only on the flat leg sections of the zigzag-shaped heater strip.

Abstract: A hotplate with a stainless steel top plate to support a vessel. The stainless steel top plate has an upper surface with a substantially centrally located depression having a depth and area generally sufficient to absorb upward crowning of the top plate when heated. A heating unit is in a heat transfer relation with the stainless steel top plate, and a base unit is connected to the heating plate assembly; however, the base unit is not fastened directly to the stainless steel top plate, so that the stainless steel top plate can expand more uniformly when heated.

Abstract: A heating element for an electric appliance for heating or cooking foods. The heating element is composed of: a tubular metal envelope; and a resistance wire encased in an insulator disposed at the interior of the tubular envelope. The wire is composed of nickel and iron as the two principal elements, and has a temperature coefficient ? greater than 1500 ppm/° C. The wire may be wound in a spiral and the outer diameter of the spiral is greater than 0.7 times the inner diameter of the tubular envelope.

Abstract: In a glass or glass ceramic plate for a kitchen appliance the safe edge is to be improved. This safe edge is formed by a rounded rim (5) having a thickness greater than that of the plate (1), which merges integrally and seamlessly with the plate (1).

Abstract: A sleeve heater is made by first cutting in one face of a flat metal plate a continuous groove and then fitting to the groove a heater wire with at least one end of the wire projecting past an edge of the plate. The plate is then plastically deformed with the wire to a tubular shape centered on an axis with the one face directed radially inward. The installation on a body to be heated is completed by fitting the deformed plate over the body to be heated and tightening the plate on the body to grip it snugly. The plate is formed of a heat-conducting metal, for instance brass, copper, or aluminum. The face of the plate from which the wire projects is directed radially inward so the wire directly engages the body. The tightener, which can be a band that circumferentially surrounds the sleeve or fittings provided at edges of the sleeve, bridges edges of the plate.