71results about How to "Loss leveling" patented technology

A honeycomb structured body in which a plurality of porous ceramic members are combined with one another by interposing an adhesive layer, each of the porous ceramic members having a plurality of cells placed in parallel with one another in a longitudinal direction with a cell wall therebetween and an outer edgewall on the outer edge surface thereof, wherein the thickness of the outer edge wall of the porous ceramic member is greater than the thickness of the cell wall, and each of the porous ceramic members has a filling body which is provided so as to fill in at least one corner portion of at least one outermost cell of the porous ceramic members.

An electrical connector includes, in substitution for contacts, a substrate having a plurality of signal patterns and a plurality of ground patterns on at least one surface, each of these patterns having at one end a contact portion adapted to contact a mating object and at the other end a connection portion to be connected to a cable, a housing having an inserting hole for inserting the substrate therethrough, and holding members for fixing the substrate to the housing. A capacitor and a resistance chip connected in parallel are mounted on at least one of the signal patterns. In this manner, the connector achieves its miniaturization, stability of impedance, reduction in cross talk, and better return loss level and transmission characteristics.

A Stirling engine-equipped cogeneration system is capable of utilizing thermal energy, without waste, and of offering high thermal usage efficiency at every stage of the thermal energy utilization process. The system includes a combustion chamber (11), a burner unit (5) installed to the combustion chamber, the burner unit driving combustion to generates exhaust gas within the combustion chamber, a liquid media jacket (21) that envelopes the combustion chamber, a liquid media flowing within the liquid media jacket and absorbing thermal energy from the burner-generated exhaust gas, a Stirling engine (4) operating from a sealed operating fluid heated by the heater (3) which is located within the combustion chamber facing the burner and subjected to the flow of exhaust gas generated within the combustion chamber, an exhaust gas flow channel (20) through which flows burner-generated exhaust gas after having flowed through and heating the heater, and an exhaust gas passage (22) having an entrance connected to the exhaust gas flow channel as means of allowing the exhaust gas to heat the liquid medium in the liquid media jacket. The exhaust gas generated from the burner-driven combustion flows into the heater to transfer thermal energy thereto, then flows into the exhaust gas passage, through the exhaust gas flow channel to transfer the thermal energy to the liquid medium, thereby heating the liquid medium and heater simultaneously.

The present invention provides a driving apparatus utilizing magnetic force, which is capable of establishing an enhanced level of higher torque, without enlarging the diameters of the drive magnetic wheel and the follower magnetic wheel, or without installing another transmission system branching off the drive shaft. The driving apparatus where the drive shaft and the follower shaft are arranged in such a manner as crossing each other at right angles, and a non-contact type power transmission mechanism utilizing magnetic force performs power transmission from the drive shaft to the follower shaft, wherein, magnetic wheels are installed respectively on the drive shaft and the follower shaft, each of the magnetic wheels being formed by spirally magnetized into N-pole and S-pole alternately, and plural points are coaxially provided which produce magnetic actions from one magnetic wheel to another magnetic wheel.

An engine oil composition is composed of: (1) at least one oil selected from the group consisting of a mineral oil and a synthetic lubricant as a base oil; (2) a molybdenum dithiocarbamate in an amount of 50 to 2000 ppm by weight when calculated as molybdenum (Mo), relative to the total weight of the engine oil composition; (3) zinc dithiophosphate in an amount of 0.01 to 0.2 wt % when calculated as phosphorus (P), relative to the total amount of the engine oil composition; and (4) an ashless organic polysulfide compound in an amount of 0.01 to 0.4 wt % when calculated as sulfur (S), relative to the total amount of the engine oil composition.

A microstrip stabilized quantum well resonance-tunneling generator which generates electromagnetic waves for millimeter and submillimeter wavelength range is provided The generator includes a resonant tunneling semiconductor quantum well diode, and a microstrip resonator. The resonant tunneling diode, the microstrip resonator and interconnecting lines and junctions are fabricated as a monolithic integrated device on a common substrate. As a result, the monolithic integrated device provides the expansion of the operation frequency range toward the terahertz region as a result of reduction of the parasitic inductance as well as of minimizing the other parasitic parameters of the electric circuitry connecting the resonant tunneling diode and resonator.

A multi-mode interference (MMI) device, comprising a hollow core multi-mode waveguide optically coupled to at least one hollow core input waveguide, is described in which the internal surfaces of the hollow core waveguides carry a reflective coating. The coating may be a low refractive index material at the wavelength of operation, such as a metal, or a multiple layer dielectric stack. Resonators and optical amplifiers using such (MMI) devices are also described.

In an optical communication system in which communication is conducted by transmitting light through a plastic optical fiber with a core diameter in the range from 300 to 600 μm, the average beam diameter and beam divergence angle expressed in terms of numerical aperture (NA) of the light at the input face of the optical fiber are set less than or equal to 250 μm, more preferably less than or equal to 200 μm, and less than or equal to 0.25, more preferably less than or equal to 0.2 respectively.

A photovoltaic cell and a method of forming an electrode grid on a photovoltaic semiconductor substrate of a photovoltaic cell are disclosed. In one embodiment, the photovoltaic cell comprises a photovoltaic semiconductor substrate; a back electrode electrically connected to a back surface of the substrate; and a front electrode electrically connected to a front surface of the substrate. The substrate, back electrode, and front electrode form an electric circuit for generating an electric current when said substrate absorbs light. The front electrode is comprised of a metal grid defining a multitude of holes. These holes may be periodic, aperiodic, or partially periodic. The front electrode may be formed by depositing nanospheres on the substrate; forming a metallic layer on the substrate, around the nanospheres; and removing the nanospheres, leaving an electrode grid defining a multitude of holes on the substrate.

A ferromagnetic powder composition including soft magnetic iron-based core particles, wherein the surface of the core particles is provided with at least one phosphorus-based inorganic insulating layer and then at least partially covered with metal-organic compound(s), wherein the total amount of metal-organic compound(s) is between 0.005 and 0.05% by weight of the powder composition, and wherein the powder composition further includes a lubricant. Further, a process for producing the composition and a method for the manufacturing of soft magnetic composite components prepared from the composition, as well as the obtained component.

A film transmission line includes a dielectric layer including at least one of a liquid crystal polymer (LCP) structure or a cyclo olefin polymer (COP) structure, and an electrode line on the dielectric layer. A signal loss level (S21) defined of the film transmission line is −1.5 dB or more at a frequency in a range from 20 GHz to 30 GHz. The film transmission line may be applied to a high frequency thin film antenna and an image display device.

A magnetic axial bearing arrangement in a reciprocating hermetic compressor, comprising: a cylinder block (20) and a radial bearing hub (40); a crankshaft (50) securing a rotor (61) of an electric motor (60), said arrangement comprising at least one magnetic axial bearing assembly (100) formed of a pair of magnet elements (101), a magnet element (101) of each pair being mounted to a respective part of at least one of the pairs of parts of crankshaft (50) and cylinder block (20), of cylinder block (20) and rotor (61), or of crankshaft (50) and external bearing (120), the parts of at least one of the pairs of parts carrying respective confronting mechanical stops which are maintained spaced apart by an axial gap (FA) smaller than a magnetic axial gap (FM) higher than zero and to be maintained between the magnet elements (101) of a magnetic axial bearing assembly (100).

An optical element has a substrate; and first to third optical waveguides formed on the substrate and each having a lower clad layer, a core layer, and an upper clad layer, the core layer having a larger refractive index than the lower clad layer and the upper clad layer. The first optical waveguide is optically connected to the second optical waveguide, and the second optical waveguide is optically connected to the third optical waveguide. The first to third optical waveguides have a mesa structure formed in a mesa shape in which at least the upper clad layer and an upper part of the core layer project above the lower clad layer. The core height of the third optical waveguide is lower than the core height of the first optical waveguide. The mesa width of the third optical waveguide is narrower than the mesa width of the first optical waveguide.

An electrical charging arrangement in a motor vehicle is disclosed having a power coupling element and at least one current conductor. A cooling element is arranged on the rear side of the power coupling element facing the current conductor so that the power coupling element can be cooled from the rear side.

An AC to DC converter includes a plurality of rectifier circuits connected in series to an AC voltage source at an input side to collectively receive an output voltage of the AC voltage source; and a plurality of switching units respectively connected to the plurality of rectifier circuits, each of the switching units having a semiconductor switching device, a diode, and a capacitor, and performing ON/OFF switching of the semiconductor switching device provided therein to step up a voltage received from the corresponding rectifier circuit, each of the switching units supplying the stepped-up voltage to said capacitor through said diode so that a resulting DC across said capacitor can be provided, as a DC output voltage of the switching unit, to a respective load to be connected to terminals of said capacitor.

An optical fiber is optically coupled to a light-receiving/emitting element contained in an interface box. The coupling structure is composed of a cylindrical ferule water-tightly inserted into a through-hole formed in a wall of the interface box, a resilient grommet coupled to the ferule and a coupler having the light-receiving/emitting element. An optical fiber is inserted into coaxially formed center holes of the ferule and the grommet, and an axial end of the optical fiber is exposed at an axial end of the ferule. The coupler is coupled to the ferule so that the light-receiving/emitting element directly faces the exposed end of the optical fiber to establish an optical connection at a minimized connection loss.