Kyoung Joon
Kyoung Joon Chang, Seongnam-City KR
Patent application number | Description | Published |
---|---|---|
20080314344 | CONTINUOUS VARIABLE VALVE LIFT APPARATUS - A continuous variable valve lift apparatus according to an exemplary embodiment of the present invention includes a camshaft, an input cam disposed to the camshaft, a variable lever that is rotably connected to the camshaft and includes a first arm including a first connecting shaft and a second arm including a second connecting shaft, a first link rotating around the first connecting shaft corresponding to a rotation of the input cam, an output cam rotating around the camshaft, a valve opening/closing portion that is opened and closed corresponding to a rotation of the output cam, and a connecting portion that is disposed for the output cam to rotate corresponding to a rotation of the first link. | 12-25-2008 |
20090031971 | CONTINUOUS VARIABLE VALVE LIFT APPARATUS - A continuous variable valve lift apparatus includes an input cam disposed on an input shaft, a valve opening/closing portion, and a rocker arm rotating shaft. A rocker arm rotates around the rocker arm rotating shaft corresponding to a rotation of the input cam. An output cam is disposed at an end of the rocker arm, and opens and closes the valve opening/closing portion. A control portion controls a position of the rocker arm rotating shaft. | 02-05-2009 |
20090151677 | VARIABLE VALVE LIFT APPARATUS - A variable valve apparatus includes a high lift cam and a low lift cam in parallel with the high lift cam. A tappet body includes a high lift tappet body that constantly contacts the high lift cam, and a low lift tappet body that is disposed in the high lift tappet body and selectively contacts the low lift cam. An inner column is connected with a valve and reciprocally disposed within the low lift tappet body. A supporting member is disposed below the tappet body. A lost motion elastic member is disposed between the supporting member and the tappet body for supplying restoring force to the tappet body. A first connector selectively connects the high lift tappet body and the low lift tappet body. A second connector selectively connects the low lift tappet body and the inner column. | 06-18-2009 |
20090151694 | VARIABLE VALVE LIFT APPARATUS OF ENGINE FOR VEHICLES - A variable lift apparatus of an engine for a vehicle may include a camshaft in which a cam is formed, a swing arm one side of which is supported by a supporting portion and another side of which operates a valve, an output arm including a roller press portion extended in one direction and a rotating arm extended in another direction, a first roller disposed in the connecting portion in which the rotating arm and the roller press portion are connected and that contacts the cam, a second roller disposed in the swing arm and contacting a roller contacting surface, a variable link connected with a lower end side of the rotating arm protruding in a lower side of the output arm by a hinge shaft and moves the hinge shaft according to a guide slot formed in a guide and a variable rotation shaft for operating the variable link. | 06-18-2009 |
20090293825 | VARIABLE VALVE LIFT APPARATUS - A variable valve lift apparatus may include a camshaft having an input cam, a rocker arm shaft disposed in parallel with the camshaft with a distance therebetween, a shaft carrier with a camshaft and a rocker arm shaft, a rocker arm that is mounted on the rocker arm shaft with a first roller contacting the input cam, a first link connected to the rocker arm, an amplification lever with a middle portion thereof connected to the first link and the shaft carrier, a second link connected to the amplification lever, an output cam mounted on the camshaft, one side of the output cam connected to the second link, and a profile portion formed at an exterior circumference thereof, a variable driveshaft rotating the shaft carrier by a predetermined angle, and a valve moved by the profile portion with rotation of the output cam. | 12-03-2009 |
Kyoung Joon Cho US
Patent application number | Description | Published |
---|---|---|
20080284509 | N-WAY DOHERTY DISTRIBUTED POWER AMPLIFIER - A power amplifier using N-way Doherty structure for extending the efficiency region over the high peak-to-average power ratio of the multiplexing modulated signals such as wideband code division multiple access and orthogonal frequency division multiplexing is disclosed. In an embodiment, the present invention uses a dual-feed distributed structure to an N-way Doherty amplifier to improve the isolation between at least one main amplifier and at least one peaking amplifier and, and also to improve both gain and efficiency performance at high output back-off power. Hybrid couplers can be used at either or both of the input and output. In at least some implementations, circuit space is also conserved due to the integration of amplification, power splitting and combining. | 11-20-2008 |
Kyoung Joon Kim, Seoul KR
Patent application number | Description | Published |
---|---|---|
20120223775 | DOHERTY AMPLIFIER - The embodiment relates to a Doherty amplifier, wherein in order to perform impedance matching. The embodiment comprises an impedance converter and a connector. The impedance converter includes a plurality of lines having different lengths and disposes between an output end of a carrier amplifier and an output end of a peaking amplifier. The connector connects a line selected from the plurality of lines having different lengths of the impedance converter to the output end of the carrier amplifier and to the output end of the peaking amplifier. | 09-06-2012 |
Kyoung Joon Kim, Busan KR
Patent application number | Description | Published |
---|---|---|
20130118543 | GEOTHERMALLY-COOLED SOLAR THERMOELECTRIC ENERGY HARVESTER - A solar thermoelectric generator (STEG) is disclosed. A STEG includes a thermoelectric generator (TEG) configured to convert light energy from solar light into electrical energy, and a heat transfer structure coupled to the TEG where a portion of the heat transfer structure is configured to be embedded in the earth. The TEG includes a first side and a second side, wherein the solar light is incident on the first side of the TEG and the heat transfer structure is configured to provide cooling for the second side of the TEG using geothermal cooling. The use of geothermal cooling to provide cooling for the second side of the TEG increases the temperature difference across the TEG of the STEG, thereby increasing the net generation efficiency of the STEG. | 05-16-2013 |
Kyoung Joon Lee, Daejeon KR
Patent application number | Description | Published |
---|---|---|
20110009138 | METHOD FOR GENERATING DOWNLINK FRAME, AND METHOD FOR SEARCHING CELL - The present invention relates to a method of generating a downlink frame. The method of generating the downlink frame includes generating a first sequence and a second sequence for identifying cell groups; generating a first scrambling sequence and a second scrambling sequence that are one-to-two mapped to the sequence number of the primary synchronization signal; scrambling the first sequence with the first scrambling sequence and scrambling the second sequence with the second scrambling sequence; and generating a secondary synchronization signal including the scrambled first sequence and second sequence and mapping the secondary synchronization signal to a frequency domain. | 01-13-2011 |
20120314870 | METHOD FOR GENERATING DOWNLINK FRAME, AND METHOD FOR SEARCHING CELL - The present invention relates to a method of generating a downlink frame. The method of generating the downlink frame includes generating a first sequence and a second sequence for identifying cell groups; generating a first scrambling sequence and a second scrambling sequence that are one-to-two mapped to the sequence number of the primary synchronization signal; scrambling the first sequence with the first scrambling sequence and scrambling the second sequence with the second scrambling sequence; and generating a secondary synchronization signal including the scrambled first sequence and second sequence and mapping the secondary synchronization signal to a frequency domain. | 12-13-2012 |
Kyoung Joon Lee, Seoul KR
Patent application number | Description | Published |
---|---|---|
20140356712 | PRECURSOR OF A CATHODE ACTIVE MATERIAL FOR A LITHIUM SECONDARY BATTERY, CATHODE ACTIVE MATERIAL, METHOD FOR MANUFACTURING THE CATHODE ACTIVE MATERIAL, AND LITHIUM SECONDARY BATTERY INCLUDING THE CATHODE ACTIVE MATERIAL - Disclosed are a precursor for a rechargeable lithium battery, a positive active material including the same, a preparation method thereof, and a rechargeable lithium battery including the positive active material. More particularly, the present invention relates to a precursor including a sheet-shaped plate having a thickness of about 1 nm to about 30 nm and that is represented by the following Chemical Formula 1. | 12-04-2014 |
Kyoung Joon Song, Dalseo-Gu KR
Patent application number | Description | Published |
---|---|---|
20140366302 | WIPER BLADE ASSEMBLY - A wiper blade assembly configured to facilitate coupling of a wiper arm and a connector member is provided to remove a space in which a U-shaped wiper arm moves forward or backward to couple with a connector member. The wiper blade assembly includes a wiper connector part. The wiper connector part comprises a connector member ( | 12-18-2014 |
Kyoung Joon Song, Dalseogu Daegu KR
Patent application number | Description | Published |
---|---|---|
20120180244 | MULTI-ADAPTER FOR A VEHICLE WIPER - A multi-adaptor for a vehicle wiper, which interconnects an arm and a blade for wiping window glass, wherein both side walls of the arm have stopper pieces and a free end, wherein a selective hook protrudes from the free end. The multi-adaptor for a vehicle wiper includes: a main body, a coupling portion formed at one end of the main body so as to enable the free end of the arm to be coupled thereto, and support portions formed at both side walls of the other end of the main body to support the stopper pieces of the arm. Accordingly, the multi-adaptor significantly increases arm-coupling force as compared to conventional adaptors, and thus preemptively prevents the arm from being separated from the adaptor. | 07-19-2012 |