US 6316883 Power-factor correction circuit of electronic ballast for fluorescent lamps
A power-factor correction circuit of an electronic ballast for fluorescent lamps which includes an input full-wave rectification circuit for full-wave rectifying an AC input voltage from an AC input power source, a DC-link capacitor for supplying a DC-link voltage in response to an output voltage from the rectification circuit and a resonant…
US 6376562 Hybrid catalyst for hydrocarbon synthesis via hydrogenation of carbon dioxide
The present invention provides a hybrid catalyst which is prepared by mixing a methanol synthesis catalyst with SAPO-type zeolite as a methanol conversion catalyst, and a process for the preparation of hydrocarbons from carbon dioxide by using the hybrid catalyst. The hybrid catalyst of the invention can be used for preparing hydrocarbons having a…
The present invention relates to the structure of a bipolar plate for direction methanol fuel cell, the shape of a flow path and a fuel cell including them, more particularly, to the structure of a bipolar plate for direct methanol fuel cell using a flow path with a dispersion structure not the existing serpentine type for supplying a fuel to the…
US 6294135 Small-scale Boiler System Using Scrapped Tires
A small-scale scrapped tire boiler system for heating a small-scale facility using heat generated by burning scrapped tires. The system includes a scrapped tire burner furnace, a heat exchanger for heating a cool heat transfer medium from the facility by the combustion gas from the furnace and supplying the heated medium to the facility, and an…
A permeable container with biofilm formation-inhibiting microorganisms immobilized therein for reducing membrane biofouling in membrane water treatment.
An amorphous anode active material, comprising at least one of amorphous metal oxide (or phosphate) with improved storage space of lithium, sodium, etc. and improved diffusion velocity of ions.
The present invention discloses an impactor with a cooled impaction plate capable of efficiently separating aerosols by cooling the impaction plate below a temperature of fluid inflowing into the impactor and a method for classifying and collecting the aerosols using the same.
This invention is intended to provide a semi-active rotary damper that can obtain a large breaking force to disperse a large torque. The rotary damper 100 comprises a damping shaft to be connected to a rotating shaft, and a closed hollow cylindrical housing surrounding the damping shaft.
US 6278958 Method for Predicting a Noise Intensity Emitted from a Fan and or a Pump
A method for predicting a noise intensity emitted from a fan is provided. The method in accordance with the present invention provides data about the performance of the fan and a noise intensity corresponding to a shape of the fan and operating conditions so that the data are used in design and manufacturing of fans.
US 6324865 Triple-effect Absorption Chillers with Vapor Compression Units
The present invention provides a triple-effect absorption chiller with vapor compression units, where one or more vapor compressors are connected to GM, GH, or evaporator of a conventional chiller, to compress refrigerant vapor from the said generators or evaporator, thereby lowering the GH temperature to a preferable range of below 170.degree. C.…
US 6376562 Hybrid catalyst for hydrocarbon synthesis via hydrogenation of carbon dioxide
The present invention provides a hybrid catalyst which is prepared by mixing a methanol synthesis catalyst with SAPO-type zeolite as a methanol conversion catalyst, and a process for the preparation of hydrocarbons from carbon dioxide by using the hybrid catalyst. The hybrid catalyst of the invention can be used for preparing hydrocarbons having a…
US 6406628 Method for removing nitrogen and phosphorous in wastewater
The present invention provides to a method for removing nitrogen and phosphorous in wastewater simultaneously from wastewater by employing fermentation broth obtained by anaerobic fermentation of organic solid wastes. The method for removing nitrogen and phosphorous in wastewater of the invention comprises the steps of subjecting organic waste…
US 6382876 Method of repairing or reinforcing worn-out underground burried drainpipes
A method of repairing or reinforcing worn-out underground buried drainpipes by a resin transfer molding process using both flexible tubes and bagging films is disclosed. In the method of this invention, a reinforcement is primarily inserted into a desired position within a target worn-out drainpipe buried underground.
US 6602326 Method for separation of gas constituents employing hydrate promoter
The present invention relates to a method for separation of gas constituents from a multicomponent gaseous mixture employing a hydrate promoter. The method for separation of gas constituents from a multicomponent gaseous mixture includes the steps of reacting an aqueous solution containing a hydrate promoter with a multicomponent gaseous mixture…
US 7303385 Heating tool for Shaping Soft Materials and Shaping Apparatus Using the same
A heating tool for shaping a soft material is provided. The heating tool is mounted to a predetermined position of a shaping apparatus and connected to a power source provided at a predetermined position of the shaping apparatus to melt and shape the soft material under a high temperature.
US 7527491 Rotary Hot Tool and Heat Ablation Apparatus using the same
Disclosed herein is a hot tool which machines a workpiece made of foam material. The hot tool of the present invention includes a motor, a rotary unit which is coupled to the motor, and an electrode terminal which is connected to an outside power supply and contacts an electrode of the rotary unit.
US 7775239 Buffered Rotary Valve
There is provided a buffered rotary valve in which a valve is additionally installed in a rotary valve for supplying a fluid of high pressure and a fluid of low pressure being input from a compressor, thereby reducing the amount of fluid being supplied and unnecessarily consumed, and enhancing the efficiency of a freezing system.
US 8101141 Unified fuel processing reactor for solid oxide fuel cell
A unified fuel processing reactor for a solid oxide fuel cell can reform hydrocarbon-based fuel into hydrogen-rich gas, remove a sulfur component, and convert non-converted fuel and a low carbon (C2˜C5) hydrocarbon compound into hydrogen and methane in a single reactor. The reactor comprises a primary-reformer which reforms a hydrocarbon-base…
US 8094922 Crack Measuring Method and Apparatus
Disclosed are a crack measuring method that may automatically measure crack growth in a surface of a structure rapidly and exactly without influencing the structure using image processing scheme, and an apparatus thereof. The crack measuring method includes: irradiating light to a surface of a structure; converting reflected light, wherein the…
US 7007549 AC type flowmeter and method of mapping flow rate data for the same
The present invention relates to a flowmeter suitable for a micro flow sensor. The flowmeter of the present invention comprises a resistive heater to be inserted into a fluid, AC power with a first frequency supplied to the resistive heater to periodically heat the resistive heater, a signal processing unit for detecting a first signal from the…
Disclosed is a magnetostrictive transducer for generating and receiving elastic waves in a testing plate and an apparatus for structural diagnosis using the magnetostrictive transducers. More particularly, disclosed is a magnetostrictive transducer which may generate and transmit elastic waves using the magnetostrictive effect in any directions…
A method and an apparatus for structural diagnosis, which generates torsional waves upon a shaft, beam or pipe having arbitrary cross-sections, such as a circular cross-section, and senses existence or location of the cracks through analyzing reflected waves are disclosed. A magnetostrictive transducer comprises a plurality of ferromagnetic strips…
A real-time simulation method and system for large deformations is provided in which the rotational component of an infinitesimal deformation is identified, and linear modal analysis is extended to track that component. Small rotations occurring at the nodal points are integrated. By implementing both position and orientation constraints, shape of…
US 7647214 Method for Simulating Stable but Non-Dissipative Water
A method for graphically simulating stable but non-dissipative water in real-time includes steps for modeling multiphase materials with grid of nodes, suppressing numerical dissipation for getting rid of loss of mass of material, and suppressing numerical diffusion for reducing dampening of the fluid motion of materials in liquid phase. The step…
Provided are a method of generating strong spin waves, a method of simultaneously generating spin waves and electromagnetic waves, a logic operation device using spin waves, a variety of spin wave devices employing the same, and a method of controlling phases of spin waves. In the method of generating spin waves, strong spin waves are generated by…
US 7565276 Method of Simulating Detailed Movements of Fluids Using Derivative Particles
The method provides a new fluid simulation technique that significantly reduces the non-physical dissipation of velocity using particles and derivative information. In solving the conventional Navier-Stokes equations, the method replace the advection part with a particle simulation. When swapping between the grid-based and particle-based…
Provided is a method and apparatus for generating and sensing torsional vibrations using magnetostriction, in order to perform modal testing on a bar, a pipe, a shaft, a beam, or the like. The apparatus includes a torsional vibration generating part transmitting torsional vibrations to a test part having an arbitrary cross-section and a…
US 8055490 Semi-Lagrangian CIP fluid solver without dimensional splitting
A new constrained interpolation profile method, which is stable and accurate but requires less amount of computation, is provided. CIP is a high-order fluid advection solver that can reproduce rich details of fluids. It has third-order accuracy but its computation is performed over a compact stencil. A novel modification of the original CIP method…
US 6195405 Gap Structure for Nuclear Reactor Vessel
A gap forming structure for use with water cooled nuclear reactors is invented to prevent overheating and ultimately structurally failing of the lower head of a reactor vessel in a nuclear reactor core meltdown accident by virtue of a cooling effect in the gap structure for facilitating the retention of accumulated molten core debris. Single layer…
A micro channel unit having a shape designed to reduce a pressure drop when fluid passes through a connecting channel portion is provided. The micro channel unit includes a micro channel with a width of micrometer dimensions through which liquid flows. The micro channel includes a plurality of straight channel portions and connecting channel…
US 6294135 Small-scale Boiler System Using Scrapped Tires
A small-scale scrapped tire boiler system for heating a small-scale facility using heat generated by burning scrapped tires. The system includes a scrapped tire burner furnace, a heat exchanger for heating a cool heat transfer medium from the facility by the combustion gas from the furnace and supplying the heated medium to the facility, and an…
US 6602326 Method for separation of gas constituents employing hydrate promoter
The present invention relates to a method for separation of gas constituents from a multicomponent gaseous mixture employing a hydrate promoter. The method for separation of gas constituents from a multicomponent gaseous mixture includes the steps of reacting an aqueous solution containing a hydrate promoter with a multicomponent gaseous mixture…
US 8091448 Manipulator with Distributed Actuation Mechanism
The present invention relates to a manipulator having distributed mechanism for maximizing the performance of the manipulator. The manipulator is comprised of a first link; a second link; a joint for rotatably joining the first link and the second link each other; a connector having a first movable node at one end and a second movable node at the…
US 8055490 Semi-Lagrangian CIP fluid solver without dimensional splitting
A new constrained interpolation profile method, which is stable and accurate but requires less amount of computation, is provided. CIP is a high-order fluid advection solver that can reproduce rich details of fluids. It has third-order accuracy but its computation is performed over a compact stencil. A novel modification of the original CIP method…
US 7719161 Method of Designing Rotary Thermal Actuator and Rotary Thermal Actuator
Provided are a method of designing a rotary thermal actuator and a rotary thermal actuator. The method includes setting the shape of an entire design domain; dividing the entire design domain into a predetermined number of domains which are symmetrical to one another in a rotational direction from the center of the entire design domain; designing…
US 6195405 Gap Structure for Nuclear Reactor Vessel
A gap forming structure for use with water cooled nuclear reactors is invented to prevent overheating and ultimately structurally failing of the lower head of a reactor vessel in a nuclear reactor core meltdown accident by virtue of a cooling effect in the gap structure for facilitating the retention of accumulated molten core debris. Single layer…