Abstract: In an acoustic wave sensor for detecting a distance to an object and an orientation where the object is located with using acoustic waves, an acoustic wave generating device generating an acoustic wave by applying thermal impact to the air with no mechanical vibration is used as a wave transmitting device, and an electric capacitance microphone converting variation of pressure due to acoustic wave to variation of an electric signal is used as each wave receiving device. Therefore, dead zone caused by reverberation component included in the acoustic wave transmitted from the wave transmitting device and dead zone caused by reverberation component included in wave receiving signals outputted from the wave receiving devices can be shortened and angular sensitivity of the acoustic wave sensor can be increased, in comparison with a conventional acoustic wave sensor using piezoelectric devices as the wave transmitting device and the wave receiving devices.

Abstract: In an energy recovery type surface acoustic wave motor, an increase in energy efficiency at the time of energy recovery and supply is achieved by adjusting phase change.

Abstract: In an acoustic wave sensor for detecting a distance to an object and an orientation where the object is located with using acoustic waves, an acoustic wave generating device generating an acoustic wave by applying thermal impact to the air with no mechanical vibration is used as a wave transmitting device, and an electric capacitance microphone converting variation of pressure due to acoustic wave to variation of an electric signal is used as each wave receiving device. Therefore, dead zone caused by reverberation component included in the acoustic wave transmitted from the wave transmitting device and dead zone caused by reverberation component included in wave receiving signals outputted from the wave receiving devices can be shortened and angular sensitivity of the acoustic wave sensor can be increased, in comparison with a conventional acoustic wave sensor using piezoelectric devices as the wave transmitting device and the wave receiving devices.

Abstract: In an energy recovery type surface acoustic wave motor, an increase in energy efficiency at the time of energy recovery and supply is achieved by adjusting phase change.

Abstract: In the present invention, the same image data, captured by a TV camera, is processed by the use of an image-processing board connected to an extension bus constituted by a personal computer and a CPU board inside the personal computer so that the CPU board and the image-processing board are allowed to execute the image processes in parallel with each other.

Abstract: A molded interconnect device (MID) having a multilayer circuit of a reduced thickness, in which a layer-to-layer connection(s) is formed with high reliability, is provided as a multilayer circuit board. The multilayer circuit board comprises a substrate having a first surface and a second surface extending from an end of the first surface at a required angle relative to the first surface, and the multilayer circuit formed on the first surface and composed of a plurality of circuit layers. Each of the circuit layers is provided with a conductive layer having a required circuit pattern and an insulation layer formed on the conductive layer by film formation. The layer-to-layer connection of the multilayer circuit is made through a second conductive layer formed on the second surface of the substrate.

Abstract: A molded interconnect device (MID) having a multilayer circuit of a reduced thickness, in which a layer-to-layer connection(s) is formed with high reliability, is provided as a multilayer circuit board. The multilayer circuit board comprises a substrate having a first surface and a second surface extending from an end of the first surface at a required angle relative to the first surface, and the multilayer circuit formed on the first surface and composed of a plurality of circuit layers. Each of the circuit layers is provided with a conductive layer having a required circuit pattern and an insulation layer formed on the conductive layer by film formation. The layer-to-layer connection of the multilayer circuit is made through a second conductive layer formed on the second surface of the substrate.

Abstract: A process for manufacturing a superconducting elongated article such as a superconducting wire which is applicable for manufacturing a superconducting coil or the like. The process includes steps comprising filling a metal pipe with material powder of ceramic consisting of compound oxide having superconductivity, performing plastic deformation of the metal pipe filled with the ceramic metal powder to reduce the cross section of the metal pipe, and then subjecting the deformed metal pipe to heat-treatment to sinter the ceramic material powder filled in the metal pipe. The ceramic material powder may contain compound oxide having Perovskite-type crystal structure exhibiting superconductivity.The metal pipe may selected from a group comprising metals of Ag, Au, Pt, Pd, Rh, Ir, Ru, Os, Cu, Al, Fe, Ni, Cr, Ti, Mo, W and Ta and alloys including these metals as the base. The heat-treatment may be carried out at a temperature ranging from 700 to 1,000.degree. C.

Abstract: A metal oxide layer is provided around a thermocouple element. The metal oxide layer is formed by preparing a sol, in which particulates of a metal oxide are dispersed, by a sol-gel method, dipping the thermocouple element in this sol, energizing the thermocouple element as a cathode for bonding the precursor particulates of the metal oxide thereto, and heat treating the same. The thermocouple according to the present invention is compact with a thin insulating layer, excellent in flexibility, and provides no gas adsorption source.

Abstract: In a ground-propulsion special-purpose electromagnetic circuit for a magnetically levitated railway in which a vehicle is propelled by acting upon superconducting magnets mounted on the vehicle, there are provided beam panels placed on both side walls of a guideway, vertically extending grooves formed in each of the beam panels at a prescribed pitch, and plural-phase cables fitted in the grooves. Levitation-guidance coil molding bodies are attached so as to cover the secured plural-phase cables.

Abstract: A method of manufacturing a superconductor is carried out by first preparing a material composed of Y.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7. This material is heated/molten in a platinum crucible. A melt thus obtained is drawn out from a high-temperature frame provided above the platinum crucible and heated to a temperature exceeding the melting point of the material. The melt thus drawn out is cooled by natural standing, to be solidified. As the result, an elongated superconductor composed of Y.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7 can be obtained. This superconductor enters a superconductive state at 90 K.

Abstract: A metal oxide layer is provided around a thermocouple element. The metal oxide layer is formed by preparing a sol, in which particulates of a metal oxide are dispersed, by a sol-gel method, dipping the thermocouple element in this sol, energizing the thermocouple element as a cathode for bonding the precursor particulates of the metal oxide thereto, and heat treating the same. The thermocouple according to the present invention is compact with a thin insulating layer, excellent in flexibility, and provides no gas adsorption source.

Abstract: A method is provided for manufacturing a composite conductor having a copper or copper alloy core, a conductive ceramic intermediate layer and a nickel outer layer, and being suitable for high temperature applications. The method involves first preparing the copper or copper alloy core, then extruding a mixture of conductive ceramic power and a binder around the core to form the ceramic layer, and then applying a nickel tape as an outer covering. As further steps, a seam of the nickel tape covering is welded, the product is passed through a cladding die, and finally the product is drawn to form the desired conductor with a preselected diameter. Optionally, a further ceramic layer can be applied around the nickel layer.

Abstract: A ceramic insulated wire has a conductor core of copper or copper alloy, a stainless steel layer around the conductor core and a chromium oxide film (2A) around the stainless steel layer. The chromium oxide film (2A) is surrounded by an outer ceramic insulator formed by a vapor deposition method. Cladding the conductor core with stainless steel is done by inserting the core lengthwise into a stainless steel pipe, plastically working the resulting composite body to provide a desired size, and oxidizing the stainless steel which contains sufficient chromium for the formation of the chromium oxide film to have a thickness within the range of 10 nm to 1000 nm. The outer ceramic insulator formed by vapor deposition is made of Al.sub.2 O.sub.3, SiO.sub.2, AlN and Si.sub.3 N.sub.4 which provide an excellent heat resistance while the chromium oxide film substantially increases the bonding strength.

Abstract: A method of manufacturing an improved conductor wire, especially for use as wiring in audio/video devices is disclosed. The conductor consists of copper having a high purity of at least 99.9 wt. %. High purity copper starting material is formed as a rod which is then heat treated at a temperature in the range of 400.degree. C. to 700.degree. C. for 1 minute to 24 hours. The heat treated rod is then cold worked with a reduction in area of at least 65%. This method provides an electrical conductor wire which avoids irregularities of electron density and thereby eliminates phase differences in a high frequency signal, such as an audio or video signal, passing through the wire to obtain clear transmission and reproduction of an audio sound or video image. The method of the invention increases the residual resistance ratio of the conductor wire to at least 179 or by at least 20% as compared to a conventional conductor which is not heat treated according to the invention.

Abstract: A heat and oxidation resistant electrically conductive composite conductor has a core (1) made of copper or a copper alloy, an electrically conductive ceramics layer (2) around the core (1), and a nickel layer (3) on the exterior of the electrically conductive ceramics layer (2). Such a conductor is produced by coating the outer surface of the core copper alloy binder and covering the coated core with a nickel tape under an atmosphere of an inert gas or a reducing gas, welding the seam of the tape, clading the so formed conductor by a cladding die, and drawing the clad conductor. The composite conductor has a high conductivity which is not reduced even when the conductor is exposed to a high temperature operating condition.

Abstract: An insulated electrical conductor wire has a conductor core containing Ni or Ni alloy at least in its outer surface, an oxide layer of Ni or Ni alloy formed by oxidation treatment of the outer surface of the conductor, and an insulating inorganic compound outer layer formed on the oxide layer of Ni or Ni alloy. The insulating inorganic outer layer is intimately bonded to the oxide layer and provides an improved heat resistance and insulability.

Abstract: An insulated wire is suitable for use as a distribution wire, a wire for winding a coil or the like, which is used in a high-vacuum environment or in a high-temperature environment such as a high vacuum apparatus or a high temperature service apparatus. The insulated wire has a base material (1) forming a substrate, a chromium oxide CrO.sub.3-x containing intermediate layer (2) on the substrate, and an oxide insulating layer (3) on the intermediate layer. The base material (1) is an electrical conductor. The chromium oxide containing layer (2) is so formed that the ratio of oxygen to chromium O/Cr is not less than 0.5 but less than 1.5 to avoid the formation of chromic oxide Cr.sub.2 O.sub.3 which reduces the adhesive bonding strength. The oxide insulating layer (3) is formed by applying a precursor solution of a metallic oxide onto the chromium oxide containing layer (2) by a sol-gel method or an organic acid salt pyrolytic method.

Abstract: An electric contact is provided on at least one of a pair of conductors and includes a surface which is coated with a ceramic layer comprising at least one material selected from the group consisting of nitrides, carbides and borides of high melting point metals, this electric contact having a low contact resistance and good reliability.

Abstract: An electrically insulated wire which has an electrical conductor formed of a base material having an outer conductor surface and a chromium oxide containing layer formed on the outer conductor surface. An electrically insulating nitride layer is provided on the chromium oxide containing layer. The electrically insulated wire has a high insulability at high-temperatures, an excellent flexibility and does not form a gas adsorption source.