US 6793582 Automotive Constant Velocity Joints
A pulley type constant velocity joint may include first and second shafts for transmitting and receiving power therebetween, first and second pulleys being fixedly attached to ends of the first and second shafts, respectively, and first and second wires wound around circumferential grooves of the first and second pulleys to allow the first and…
US 6336986 Method for Producing Hybrid Driveshaft
A hybrid shaft adapted to be used as a drive shaft of an automobile transmission system comprises a unitary cylindrical hybrid stem formed from a metal tube and a composite material layer adhered to the metal tube. The metal tube provides torque-transmission strength to the hybrid shaft while the composite material layer increases a specific…
US 6376562 Hybrid Ctalyst 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 6390534 Impact beam for car doors
An impact beam for car doors is reinforced at its central portion. In an embodiment, the impact beam consists of a longitudinal beam stepped at two positions to allow its central portion to be thicker than its opposite end portions. In another embodiment, the impact beam consists of a longitudinal base beam body, and a hollow reinforcing beam body…
US 6622580 Backlash-Free Speed Reducing Device
A backlash-free speed reducing device includes a drive unit, a rotary unit, and a power output unit. The drive unit consists of a drive motor having a drive shaft. A first power transmission cable is wound around the drive shaft. The rotary unit has two first cylinders, with the first transmission cable fixed to the external surface of the first…
The present invention discloses an infrared bolometer including a signal bridge used for reading a resistance value varied by infrared heat and removing residual heat of a heat absorbing layer. The infrared bolometer includes a lower substrate having an integrated circuit coated with a protection layer, an upper substrate having an absorbing layer…
US 7556118 Airbag system for an automobile and method of operating the same
The present invention may provide an airbag system for an automobile and a method of operating the same. The airbag system comprises the following: sensors mounted on a frame member of a the vehicle frame for detecting a crash by sequentially measuring stress wave cause by the crash; an electronic control unit for outputting an actuation signal…
US 7764212 Driving Apparatus for Display
A driving apparatus for a display is provided. The driving apparatus for a display comprises a reference voltage generator, a digital-to-analog converter, and an output unit. The reference voltage generator generates a plurality of reference voltages, and receives a difference value between two adjacent reference voltages and generates a plurality…
US 6477912 Six-Degrees-of-Freedom Parallel Mechanism for Micro-Positioning Work
A six-degrees-of-freedom parallel mechanism for micro-positioning work is disclosed. This mechanism freely performs a desired motion of translation and rotation of a moving platform using internal and external links actuated by linear actuators capable of precisely controlling the link positions, thus being effectively used as a 6dof parallel…
US 8100215 Module for Detecting a Vehicle Crash and an Airbag Deploying System
Embodiments of the present invention may provide a module for detecting a vehicle crash. The module includes a housing mounted to a vehicular frame member at one end portion thereof. The module includes first and second rods housed in the housing. The first rod is contacted to the frame member at one end thereof through the one end portion of the…
Disclosed is an apparatus or a method for measuring flexural waves and/or vibrations acting on ferromagnetic materials or ferromagnetic films. The present invention includes a bias magnet disposed around the ferromagnetic material so as to form a magnetic field in accordance with a stress distribution pattern occurring as the flexural wave…
An alternating human vibration-exciting method for obtaining a free vibration waveform of buildings or civil structures having a natural vibration frequency more than 2-5 Hz. First and second same-number set of subjects having similar weights alternately apply exciting forces to a wall on a top of the structure. An electronic beat-sound generator…
US 6560498 Formation Method and Device for Curved Plates
This invention includes the generation of forming information and its manipulation scheme as a method to form curved plates in ship hull-pieces. This invention consists of three components as follows: one is to construct and utilize a database which includes data about flat plates, objective curved plates, plates which are being formed, and their…
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…
US 7290374 Vibration Control Apparatus Using Water Tank Located at Top Floor of a Tall Building
A vibration control apparatus using a water tank, which is installed at the uppermost floor of a tall building, the water tank being formed at the inner wall surface thereof with horizontal protrusions. In order to improve a vibration attenuation rate in a horizontal direction within the water tank, the water tank is installed with vertical wire…
US 6862849 Directional Sliding Pendulum Seismic Isolation Systems with Articulated Sliding Assembly
A bi-directional sliding pendulum seismic isolation system for reducing seismic force acting on a structure by sliding pendulum movements, each system comprising a lower sliding plate forming a sliding path in a first direction, an upper sliding plate forming a sliding path in a second direction, and a sliding assembly for reducing the seismic…
US 6951083 Directional Sliding Pendulum Seismic Isolation Systems with Articulated Sliding Assembly
A bi-directional sliding pendulum seismic isolation system for reducing seismic force acting on a structure by sliding pendulum movements, each system comprising a lower sliding plate forming a sliding path in a first direction, an upper sliding plate forming a sliding path in a second direction, and a sliding assembly for reducing the seismic…
US 6725612 Directional Rolling Pendulum Seismic Isolation Systems and Roller Assembly Therefor
A bi-directional rolling pendulum seismic isolation system for reducing seismic force acting on a structure by rolling pendulum movements, the system having a lower plate forming a rolling path in a first direction; an upper plate forming a rolling path in a second direction; and a roller assembly performing a pendulum motion by rolling and moving…
A bi-directional sliding pendulum seismic isolation system for reducing seismic force acting on a structure by sliding pendulum movements, each system comprising a lower sliding plate forming a sliding path in a first direction, an upper sliding plate forming a sliding path in a second direction, and a sliding assembly for reducing the seismic…
Disclosed is a seismic load transmitting system based on impact mechanism for a multi-span continuous bridge. There are impact assemblies connected to a superstructure of the bridge for colliding with movable support piers according to a longitudinal displacement of the superstructure of the bridge caused by a seismic load. The seismic load is…
US 7100969 Wake Disturbing Apparatus and Method for Reducing Drag
Provided is a wake disturbing apparatus and method for reducing drag, which can considerably reduce drag caused by a sharp decrease in the pressure behind an object with a blunt trailing edge, such as a vehicle, while the object is traveling at high speed. The wake disturbing apparatus includes a plurality of disrupters, which are arranged at…
US 6503033 Parallel Mechanism Structure for Controlling Three-Dimensional Position and Orientation
Disclosed is a parallel mechanism structure for controlling three-dimensional position and orientation. In the parallel mechanism structure according to the present invention, three links are connected to the main spindle of the mechanism and driven in vertical and horizontal direction, with a consecution that the main spindle connected to the…
US 6334350 Automatic Machine for the Formation of Ship’s Curved Hull-pieces
This invention relates to an automatic machine to form curved plates of ship’s hull-pieces in a shipbuilding process. This automatic machine has the following devices, ajig table to support steel plates, a heating device including a torch to heat one side of steel plates up to the required temperature (about 800 C.), a cooling device to cool down…
US 6135683 Parallel Mechanism for Multi-machining Type Machining Center
A six-degree-of-freedom parallel mechanism is provided for expanding a grade of a spindle. The parallel mechanism has a spindle that turns round a workpiece at a tilting angle of 90.degree. in a workspace, to thereby allow a machining for both vertical and horizontal planes of the workpiece, and a vertical turning process, by a single machining…
US 6146487 Rapid Prototyping Method for Minimizing Post Processing
A method for rapid prototyping including generating cutting data including generating a support structure, deriving a silhouette curve, slicing three dimensional data into two dimensional sectional data, generating bridges for every island in the two dimensional sectional data, and generating cutting data and grouping the cutting data into first…
PCT KR2011-009545 Exhaust Structure on Engine room for Vehicle and Vehicle Comprising the same
An exhaust structure for vehicles forming an air exhaust aperture along an air flow direction. Pending…
PCT KR2011-009544 Vehicle Undercover and Vehicle Comprising the same
A vehicle undercover forming an air exhaust aperture along an air flow direction. Pending…