Abstract: An apparatus replaceably carries an electrical resistance element for a furnace. The electrical element is of serpentine configuration having a plurality of U-shaped portions. At least one plate-shaped carrying element is mechanically fastened in a block of ceramic fibrous material. The carrying element includes a plurality of through-passages into which the U-shaped portions of the electrical element are inserted. The through-passages each include side walls and transverse walls which restrain movement of the electrical element in all directions except a direction in which the electrical element is inserted and removed. The carrying element is spaced from the adjacent curved segments of the U-shaped portions. The electrical element terminates in elongated terminals which are carried by a plug of fibrous ceramic material. The electrical element is situated within a recess of the ceramic block.

Abstract: A cylindrical spacer type resistor device is connected to a metal fixing plate or a print circuit plate by its electrodes without lead wires only by fixing the resistor device. The operation for connecting the lead wires can be eliminated. When the resistor device is used as a disconnection detecting resistor of a rotor in a generator for a car charger, the resistor device can be easily fixed in a narrow space.

Abstract: An electrical resistor comprising an elongated resistor body having a resistance wire winding extending between its ends and terminals at each end contact the resistance winding and each comprise a strip of given width having a first end portion extending about and secured with an end of the body, and a second end portion which extends in a direction transverse to the axis of the body and has a tip for being received through an opening in a printed circuit board. Each strip has an intermediate neck portion of reduced width which is positioned proximate to the resistor body and is twisted so that the second portion extends in a plane which is perpendicular to the axis of the body and in the same direction with and spaced from that of the other terminal allowing adjustment of the distance between their tips. The second end portions each have a shoulder proximate to its tip which is seated on the surface of a circuit board, fixing the position of the resistor and stabilizing its mounting thereon.

Abstract: A method for attaching and securing an apertured mounting bracket to a metal sheathed electric heating element received therethrough to insure firm mechanical support, prevention of relative axial motion, reliable electrical grounding, and ease of adaptation to automated assembly.

Abstract: A dynamic braking resistor as shown and claimed in U.S. Pat. No. 2,680,178 in which the insulator blocks (226) in this new disclosure are formed of a hot-molded organic compound instead of steatite or asbestos. This allows the insulator blocks to be securely mounted to the frame (210, 212), and allows the elimination of the springs, spring cups and pressure plate. In addition, the extra insulative mica sheet required by the above patent is eliminated without loss of protection from short circuits. However, in order to protect the insulator blocks from the heat generated by the resistor ribbons (218, 220), the support clips (232) are made longer to allow more expansion of the ribbons and to hold the ribbons further away from the insulator blocks. In an alternative embodiment, three resistor ribbons (234, 236, 238) are employed, and each support clip (240) supports one reflex bend of all three ribbons.

Abstract: An electric hot plate has a molybdenum disilicide resistance wire heating element spaced above a fibrous refractory pad by wire supports and spaced below a transparent glass plate forming a cooking surface. The pad has a smooth top surface, the wire is looped back and forth sinuously or possibly spirally coiled to form a layer which is parallel with the pad surface and the glass plate, and the wire is designed to operate at temperatures preferably of from about 2300.degree. to 2500.degree. F. or higher, at which temperatures the pad surface has been found to be effective for diffusely reflecting upwardly the wire heat radiation.

Abstract: A means for attaching and securing an apertured mounting bracket to a sheathed electric heating element received therethrough to insure firm mechanical support, preclusion of relative axial motion, reliable electrical grounding, and ease of adaptation to automated assembly, characterized by an initially flangeless sleeve shaped to form a double grip at opposite ends to the heating element with the bracket clamped therebetween.

Abstract: A fixed attenuator for microwave band comprising of a dielectric substrate, with a resistance film and a conductor film attached on said substrate so as to form an attenuation circuit. The substrate further comprises of at least one hole provided through the dielectric substrate. The attenuator is mounted on a metallic board or a printed circuit board by a screw inserted in said hole. Thus, the cooling effect of the resistance film has been improved while keeping the low manufacturing cost and stable structure, by fixing the dielectric substrate on a metallic board by screws inserted in the mentioned holes.

Abstract: A mounting for a heating element on a hot water tank wherein an externally threaded spud is welded to the tank around an opening and the heating element is pushed through the opening, the heating element having a mounting plug thereon with a gasket to engage the spud and a nut having a wave spreading flange engages the mounting plug threadably engages the spud holding a sealing element on the mounting plate against the spud to prevent leakage.

Abstract: A means for attaching and securing an apertured mounting bracket to a sheathed heating element received therethrough to insure firm mechanical support, prevention of relative axial motion, reliable electrical grounding, and ease of adaptation to automated assembly. A method for effecting the attachment is disclosed.

Abstract: An epoxy glass fabric strip is used to carry a carbon based resistive path.

Abstract: The unit comprises a fan-folded ribbon of resistance material supported by parallel insulating members at the ends of the loops. Each length or fold is formed with a transverse reverse bend or offset dividing the fold into major and minor lengths, which are not coplanar.

Abstract: A resistive film composition consisting essentially of AlN and solid solution of TiN and ZrN and a method of making the same by means of cathodic sputtering.

Abstract: A power resistor including a resistance element of metal ribbon formed into an edgewound helix, and an internal three-point support structure axially disposed within the interior of the helix. The support structure includes three insulating assemblies each having a plurality of insulators secured by longitudinal compression springs to a support bar. The support structure also includes a pair of spreaders located at opposite ends of the helix, each having three radially extending arms. Assembly of the resistor includes the steps of inserting the insulating assemblies into the interior of the helix, radially spreading the insulating assemblies against the interior of the helix, and welding the ends of the support bars to the extending arms of the spreaders.

Abstract: A precision electrical resistance network device comprising an electrically insulating substrate having at least two film electrical resistance elements supported thereon, the resistance elements having substantially the same temperature coefficient of resistance, characterized in that the device is constructed and arranged in such a way that temperature differences resulting through connection of the device in an electric circuit are minimized, which may be done by providing the substrate with heat transfer means through which heat can flow, so that a tendency for temperature differences in the film elements to occur is counteracted, and/or by twining and locating the resistance elements adjacent one another on the substrate, whereby the mean temperature of each element is substantially the same.

Abstract: Improved forms of electric resistance elements or resistors may be made from semiconducting organic-refractory oxide fibers, as for example drawn alumina fibers which have been subjected to contact with a pyrolyzable organic substance at a temperature above about 400.degree. C. A few, or a large number of the semiconductive fibers, can be used in a group or bundle form to provide a desired resistance for a particular resistor. A preferred form of resistance element will cover the fibers in a quartz tube or other suitable encapsulating material to preclude moisture problems.

Abstract: The end of an elongated resistance element, such as a molybdenum disilicide rod, is joined to a metal member which provides both electrical connection and mechanical support.