Abstract: A plurality of heating wires are arranged so as not to cross each other. Common power source terminals are connected to two end portions or at an intermediate portion of each heating wire. Each common power source terminal has a plurality of conductors which cross the heating wires. The heating wires and/or the conductors are fixed on one surface of the nonconductive fiber sheet or are woven thereinto.

Abstract: A toast guard made of a heat absorbent ceramic piece molded in the shape of a slice of bread, but slightly smaller in size and thickness than a slice of bread. The ceramic piece is used in the toasting process of an ordinary multi-slotted household toaster when some of the slots of the toaster are filled with slices of bread and some of the slots are vacant. The ceramic piece enables the toast to be darkened to the same degree on both sides and prevents the excessive darkening or burning of the side of the toast adjacent to a vacant slot in the toaster.

Abstract: A fuse is disclosed for protecting thick film devices. The fuse comprises two blocks of material mounted to the substrate that carries the thick film device. The blocks are mounted in close proximity to one another, in axial alignment, but in a spaced apart relationship. An electrically conductive fusible link (e.g. solder) straddles the two blocks so as to complete an electric circuit.

Abstract: A confectionery grill having upper and lower hinged heating elements in which the upper heating element or grill unit can be adjustably spaced at its hinge from the lower heating element or grill unit during the cooking cycle.

Abstract: A heating electric wire is provided having a heating portion electrically connected to a lead portion, the heating portion being a bundle of a plurality of elongate, electrically insulating tension members having a heating layer around the periphery of the bundle of tension members, the lead portion being a bundle of a plurality of elongate, electrical conducting wires, at least a portion of the insulating tension members being coupled to at least a portion of the conducting wires in the connection region between the heating and lead portions, the entire assembly having a heat resistant sheath around its periphery.

Abstract: An input device for use in a display unit serving as a terminal of a computer has first and second insulating sheets and an insulating spacer sandwiched between the first and second sheets. The first sheet has first terminal leads on its both ends, while the second sheet has second terminal leads which extend in perpendicular relation to the first terminal leads. The upper surface is covered with a flexible, insulating, protective sheet. The spacer includes lattice-like conductors and consists of a material having cells of gas and elasticity and flexibility such as silicone foam. A fixed voltage is alternately applied across both ends of the first sheet and across both ends of the second sheet. When the protective sheet is depressed at a point P as by a depression pen, the position of the point is measured and represented by means of X- and Y-coordinates.

Abstract: An electrically energized evaporator and/or soft lens heating and disinfecting unit is provided which is compact in size in that it does not require a separate holder for the lenses. Instead, the unit itself forms the lens holder, and the holder has compartments for the left and right lenses and which are adapted to be filled with an appropriate saline solution, the compartments being heated by electrical heating elements to perform the desired disinfecting and sterilizing functions. These heating elements may take the form of positive temperature coefficient (PTC) elements. The unit is equipped with an electric plug which may be directly plugged into an electric receptacle to energize the heating elements.

Abstract: A chip resistor provided with a thin-film resistor has lateral electrodes formed at both sides of the substrate of the chip resistor. The lateral electrodes are formed by printing and firing conductive paste of a silver resin, not by thin-film technology. Electrode layers are formed on the lateral electrodes and on the thin-film electrode by plating. The chip resistor is thus constructed so as to be readily connectable to a motherboard by dip soldering or reflow soldering.

Abstract: The electrical resistor of the present invention comprises a flat metal plate having a thickness from 1 mil to 50 mils. A pair of electrical leads are operatively attached to the ends of the metal plate, and the side edges of the metal plate are provided with a plurality of notches extending inwardly in spaced apart relation to one another, with slots of one of the sides of the plate being staggered with respect to the slots of the other side of the plate. Each of the slots extend completely through the thickness of the plate and are formed by a laser beam cut which anneals the metal of the plate and imparts stability to the electrical characteristics of the metal plate. Once formed, the metal plate may be bent into different shapes to achieve the desired geometric configuration. Furthermore, the plate can be embedded in molded material so as to provide a protective covering for the plate.

Abstract: This disclosure relates to a portable instrument for inducing heat into an object. The instrument includes an enclosure that fastens to and at least partially encloses the object, an electrical power source fastened to the enclosure and including a variable power supply for passing heating current through the enclosure and thereby heating the object, and a thermocouple for sensing the temperature of the object.

Abstract: A thick film resistor includes a ceramic substrate 10, a pair of spaced apart electrical connections 30 affixed to the substrate 10, a region of electrically resistive material 21 coated onto the ceramic 10 and not in contact with either of the electrical connections 30, the electrically resistive material adapted to be trimmed 25 and 26 along an edge to thereby lower its resistance, and a pair of spaced apart strips of electrically conductive material 12 and 14 formed on the substrate 10 in electrical contact with the resistive material 21 and extending to a respective one of the pair of connectors 30, the strips 12 and 14 being substantially parallel where in contact with resistive material 21 except at ends of the strips 13 and 15 opposite the location to be trimmed 25. The invention places highest electric field concentrations away from the edge to be trimmed.

Abstract: An electrical resistance heating assembly having specially designed electrical insulators is disclosed. The electrical insulators have arms shaped to retain an electrical resistance heating coil which can be quickly, easily, and reliably mounted on the arms of the insulator. Top parts of the arms are generally rectangular or triangular in cross section and the arms are spaced and configured relative to each other to form a generally T-shaped opening between the arms, with the ends of the cross bar of the T-shaped opening forming electrically resistance heating coil retention surfaces. Also, cuts in side surfaces of the insulators may provide additional coil retention surfaces.

Abstract: An electric hotplate has a hotplate body in the form of a thin ceramic substrate, to whose bottom surface is applied, e.g. by printing, a thin resistive material film. This resistive material film is covered by a protective coating, which prevents damage. Between the protective coating and the bottom tray of the hotplate is provided a thermal insulating layer. The hotplate has an extremely low thermal capacity, so that rapid preliminary cooking or boiling is possible with low power consumption.

Abstract: A microprocessor controlled electric range having a solid state switch selectively associated with each surface heating element and a solid state switch in series and common to the circuits of each of the selectively associated switches. Each of the switches is controlled by a microprocessor and, if one of the selectively associated switches fails to a short circuit, the subsequent energization of all heating elements is disabled.

Abstract: The process is for manufacturing an electric circuit which comprises an electric element for firing a pyrotechnic device, in which a sheet (1) made from an electrically resistant material is fixed to an electrically insulating support (3), and in which two conducting zones (12a, 12b) separated by an electrically resistant element (13) are then etched on this sheet.This process comprises the following steps:a fine nickel layer and then a fine copper layer are applied to the sheet (1), after which;a hole (7) is pierced through the assembly,a fine copper layer is deposited on the assembly, a protecting mask is deposited in the openings etched in the resistive sheet, a copper layer (10) then a tin-lead layer are deposited in the hole (7) and on both faces of the assembly,the protecting mask is removed and the fine copper layer which was protected by the mask is stripped by chemical action and,the external tin-lead layer is removed by chemical action.

Abstract: The heat generating member in a ceramic glow plug is a coil embedded in the ceramic. The coil is wound to have a coil angle, i.e. an angle formed between the coil and a line parallel to the coil axis, of no more than 60.degree.. The ceramic may be a non-oxide ceramic, nitride ceramic, SiC ceramic, or the like.

Abstract: A flexible heating element is suggested to be made on a continuous basis, so that desired length can be cut therefrom and includes individual, electrically insulated feeder lines and a heating being interlooped in interweaving fashion with the feeder lines, there being discrete locations of the feeder lines from which the insulation has been removed for making contact with the heating conductor for supplying power thereto.

Abstract: A beverage warmer assembly comprising a support unit having an electrically heated surface on which a beverage-container unit such as a cup may rest, the container unit and the support unit having magnetically coacting elements so mounted to the respective units that a switch is (a) connected for electrical heating of the surface for one orientational relation of container-unit seating on the surface and (b) is inoperative for a different orientational relation of container-unit seating on the surface.

Abstract: Small portable electrical resistance heated radiant heating unit useful for insertion in tube bores to effect localized high temperature heating. Useful for the internal heating of tubes and tube/sleeve assemblies in steam generators, having bores as small as 0.75 cm. or less, for brazing, stress relieving, and other applications.

Abstract: An electrical heating device comprises a substrate, an elongated conductor extending longitudinally of the substrate, a semi-conductor pattern carried on the substrate and electrically connected to and extending from the conductor pair, and a sealing layer overlying the conductor and sealed to the substrate at opposite sides of the conductor. The conductor comprises a pair of rectangular in cross-section metallic conductor elements, placed one on top of the other in face-to-face engagement with and unattached to each other. The bottom conductor elements faces towards the substrate and the upper conductor elements faces towards and engaging the sealing layer.