Kyong-Tae
Kyong Tae Chang, Academy Town KR
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20120144996 | Axial Piston Pump With Pistons Having Metallic Sealing Rings - An axial piston pump, comprising a cylinder block having one or more cylinder bores; and one or more piston assemblies; wherein number of piston assemblies matches number of cylinder bores; wherein each of the piston assemblies having a piston being disposed reciprocating in each of the cylinder bores; and wherein each piston being fitted with a metallic sealing ring, which is a coiled felt seal (CFS), for reducing leakage and keeping concentric of the piston within its corresponding cylinder bore. | 06-14-2012 |
20120216673 | Coiled Felt Seal (CFS) Sealed Piston of Hydraulic Cylinder - Pistons and piston rods of hydraulic cylinders are fitted with coiled felt seal (CFS) in place of rubber O-rings for the sealing of the cylinders. The resulting piston-cylinder mechanical device has a simpler structure, lesser number of components without the multiple rubber O-rings, improved durability and higher performance with extreme temperature tolerance, enhanced internal pressure capacity, reduced power loss due to reduced piston-cylinder friction, and significantly reduced leakage. | 08-30-2012 |
20130014845 | SPOOL TYPE HYDRAULIC CONTROL VALVE WHICH SPOOL IS SEALED WITH ALL METAL SEAL RING - A spool type control valve, comprising: a valve block having a cylinder bore with drilled holes on the cylinder bore internal wall; a valve spool inserted in the cylinder bore; wherein the valve spool having separation sleeves each being spaced apart on the valve spool; wherein an all-metal-seal ring is assembled and fitted on each of the separation sleeves; and wherein each of the all-metal-seal rings is constructed with three different functioning ring layers: a cylinder seal layer, an absorption layer, and a shaft seal layer; wherein the cylinder seal layer seals the cylinder bore internal wall and does come into contact with the valve spool surface; wherein the absorption layer absorbs any dimensional variations during dynamic movement of the valve spool; and shaft seal layer seals the valve spool and does not come into contact with the cylinder bore internal wall. | 01-17-2013 |
20130017107 | DIESEL ENGINE FUEL INJECTION PUMP WHICH PISTONS ARE SEALED WITH ALL METAL SEAL RINGS - An injection fuel pump, comprising: a pump body; a drive shaft assembled into the pump body; a piston-drive cam assembled on to the drive shaft; and one or more cylinder heads, each comprising: a pump piston inserted in a cylinder bore, wherein the pump piston is fitted with one or more all-metal-seal rings; wherein the pump piston that is fitted with one or more all-metal-seal rings having a cross-sectional area that is the same as the cylinder bore cross-sectional area, as such creating zero internal leakage. In one embodiment, the all-metal-seal rings are coiled felt seals. | 01-17-2013 |
20130300069 | METAL COIL PROPELLER SHAFT SEAL FOR DEEP DIVE VESSEL - A propeller shaft seal for sealing a propeller shaft in a stern tube, comprising a bi-direction rotational sealing body being fitted within the stern tube and wrapped around the propeller shaft in its axial direction; wherein the bi-direction rotational sealing body comprising two metallic helical coils stacking together in a way that is mirroring each other; wherein the first and second metallic helical coils being constructed from helically coiled metal tapes of varying widths linked together and coiled into rings and with the rings tightly bounded; and wherein at any one time during operation, a rotational direction of the propeller shaft is same as coiling direction of one of the two metallic helical coils but opposite to that of the other of the two metallic helical coils. | 11-14-2013 |
Kyong Tae Kim, Pohang-Shi KR
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20140051880 | METHOD FOR PREPARING DIALKYL CARBONATE - Disclosed is a method for preparing a dialkyl carbonate, in which a dialkyl carbonate such as dimethyl carbonate is economically prepared in an environmentally-friendly manner at a higher yield while reducing generation of a by-product. The method for preparing the dialkyl carbonate includes reacting urea, an alkyl carbamate having 1 to 3 carbon atoms, or a mixture thereof with a monovalent alcohol having 1 to 3 carbon atoms in the presence of a room temperature ionic liquid and a catalyst including a salt of a transition metal or a rare earth metal. | 02-20-2014 |
Kyong Tae Yu, Seongnam-Si KR
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20140357003 | METHOD OF MANUFACTURING ORGANIC LIGHT EMITTING DISPLAY APPARATUS - A method of manufacturing an organic light emitting display apparatus is presented. The method includes providing a device substrate on which a first electrode and a pixel definition layer covering a portion of the first electrode are formed, forming a master substrate on which a transfer mask is patterned to mirror positions of the pixel definition layer, coupling the transfer mask to the pixel definition layer, forming an organic material layer on the exposed portion of the first electrode using the transfer mask as a protection layer, and removing the transfer mask. The transfer mask may replace a deposition metal mask. | 12-04-2014 |
Kyong-Tae Park, Gyeonggi-Do KR
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20080266330 | DISPLAY DEVICE AND DRIVING METHOD THEREOF - A display device includes pixels which represent first, second and third colors and white, a signal controller which operates a white initial luminance value of the white and first, second and third luminance compensation values of the first, second and third colors based on input image signals of the first, second and third colors, generates a white output image signal of the white based on a sum of at least one portion of the first, second and third luminance compensation values and the white initial luminance value, and generates first, second and third output image signals of the first, second and third colors based on remaining first, second and third luminance compensation values, and a data driver which converts the white output image signal and the first, second and third output image signals into data voltages and supplies the data voltages to the pixels to display an image. | 10-30-2008 |
Kyong-Tae Park, Yongin-Si KR
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20130285538 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND METHOD OF MANUFACTURING THE SAME - An organic light emitting display device and a method of manufacturing the same are provided. The organic light emitting display device includes: a substrate including a display portion displaying an image as a plurality of sub-pixels that are arranged, and a non-display portion extending at an edge of the display portion; and a sealant formed along a periphery of the display portion, wherein an organic film having an emissive layer is formed on the plurality of sub-pixels, and an emissive layer storage unit storing an emissive layer coated on the non-display portion is formed between the display portion and the sealant. By forming the emissive layer storage unit by removing at least a part of a pixel defining layer on an edge of the substrate, a raw material of the emissive layer coated on the non-display portion on the substrate is easily processed via the emissive layer storage unit. | 10-31-2013 |
Kyong-Tae Park, Yeongtong-Gu KR
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20130069926 | ORGANIC LIGHT EMITTING DISPLAY AND METHOD OF DRIVING THEREOF - An organic light-emitting display device and a method of driving the display device are disclosed. A pixel circuit used in the organic light-emitting display device includes a first switching transistor, a second switching transistor and a driving transistor. The first switching transistor switches a data voltage in response to a first control signal. The second switching transistor switches a compensation voltage in response to a second control signal. The driving transistor provides an electric current to an organic light-emitting device in response to the data voltage and the compensation voltage. | 03-21-2013 |