Patents by Inventor Dai Gil Lee
Dai Gil Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8317056Abstract: A structure and method for bonding heat-insulating protection walls of a liquefied natural gas carrier is provided. Each of the heat-insulating protection walls is formed of an insulation foam layer and a fiber-reinforced composite reinforcing sheet attached to a surface of the insulation foam layer. The heat-insulating protection walls are provided in a tank of the liquefied natural gas carrier in a mutually adjoining relationship and bonded to one another at a junction to keep the tank cold. The structure includes a fiber-reinforced composite joint sheet positioned in alignment with the juncture of the heat-insulating protection walls and bonded to the fiber-reinforced composite reinforcing sheet by an adhesive agent and a spacer interposed between the fiber-reinforced composite reinforcing sheet and the fiber-reinforced composite joint sheet for keeping the adhesive agent uniform in thickness.Type: GrantFiled: July 12, 2007Date of Patent: November 27, 2012Assignee: Korea Advanced Institute of Science and TechnologyInventors: Dai-Gil Lee, Sang-Wook Park, Byung-Chul Kim, Seong-su Kim
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Publication number: 20120211621Abstract: An apparatus for a cargo insulation panel and an insulation panel using the fixing apparatus are provided. By providing a fixing apparatus of a cargo insulation panel and an insulation panel using the fixing apparatus, which include a fixing plate adhered to one face of the insulation panel, a plurality of fixing brackets protruded to the outside of the fixing plate, protruded portions of the fixing brackets being fixed by stud bolts arranged on the hull, and coupling means being configured to couple the fixing brackets to the fixing plate, the present invention can improve the continuity of the insulation panel, enhance the adhesiveness and airtightness with a member such as supple triplex, easily adjust adjacent insulation panels vertically or laterally, and solve the problem of damage by interference or the inconvenience of transportation by allowing the fixing bracket to be inserted during the transportation of the insulation panel.Type: ApplicationFiled: April 25, 2012Publication date: August 23, 2012Applicant: SAMSUNG HEAVY IND. CO., LTD.Inventors: Ki-Hun Joh, Sang-Eon Chun, Chang-Seon Bang, Dai-Gil Lee, Byung-Chul Kim, Bu-Gi Kim, Jin-Gyu Kim, Soon-Ho Yoon, Sang-Wook Park, Kwan-Ho Lee, Seong-Su Kim, Byoung-Jung Kim, Po-Chul Kim, Ha-Na Yu, Min-Woo Lim, In-Uk Hwang
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COMPOSITE SEPARATOR FOR POLYMER ELECTROLYTE MEMBRANE FUEL CELL AND METHOD FOR MANUFACTURING THE SAME
Publication number: 20120077107Abstract: The present invention provides a composite separator for a polymer electrolyte membrane fuel cell (PEMFC) and a method for manufacturing the same. The inventive method involves allowing graphite foil layers to be brought into direct contact with each other when graphite foils are stacked on both sides of a carbon fiber reinforced composite material prepreg, thereby improving electrical conductivity in the thickness direction of the separator.Type: ApplicationFiled: November 19, 2010Publication date: March 29, 2012Applicants: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY, HYUNDAI MOTOR COMPANYInventors: Dai Gil Lee, Ha Na Yu, Byoung Chul Kim, Bu Gi Kim, Jun Woo Lim, Jung Do Suh -
Publication number: 20110281203Abstract: The present invention provides a method for manufacturing a composite separator for a fuel cell, which can reduce the electrical contact resistance by performing an additional post-treatment to remove residual resin remaining on the surface of the composite separator by plasma etching. In certain preferred embodiments, the present invention provides a method for manufacturing a composite separator for a fuel cell, in which a liquid phase resin for gasket is applied to the surface of the composite separator along a predetermined gasket pattern, or a semi-cured resin for gasket in the form of a film with a predetermined gasket pattern is stacked on the surface of the composite separator, and then plasma etching is performed to remove the residual resin and, at the same time, cure the resin for gasket, thus reducing the overall processing time to improve the productivity and preventing a composite material of the separator from being damaged.Type: ApplicationFiled: September 7, 2010Publication date: November 17, 2011Applicants: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY, HYUNDAI MOTOR COMPANYInventors: Dai Gil Lee, Ha Na Yu, Byoung Chul Kim, Bu Gi Kim, Jun Woo Lim, Jung Do Suh, Byung Ki Ahn, Sae Hoon Kim
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Patent number: 8028416Abstract: The object of this invention is to provide a hybrid composite journal bearing which is constructed so that a composite liner is positioned on an inner surface of a metal housing having a circular cross-section, thus preventing a journal from being broken or damaged or seized to the bearing, due to friction between the metal or composite journal and the journal bearing. The hybrid composite journal bearing (210) includes a metal housing (211) which is secured on an outer surface thereof to a bearing system and has a circular cross-section. A composite liner (212) is laminated to an inner surface of the metal housing (211) with a uniform thickness so as to minimize friction between the journal bearing and a journal.Type: GrantFiled: May 17, 2010Date of Patent: October 4, 2011Assignees: Korea Advanced Institute of Science and Technology, Samsung Heavy Ind. Co., LtdInventors: Dai Gil Lee, Hyoung Geun Kim, Seong Su Kim, Kyung Kun Bang
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Publication number: 20110186580Abstract: The present invention is related to a reinforcing member for a membrane for improving the pressure-withstanding property of the membrane having corrugations, and a membrane assembly having the reinforcing member and a method of constructing the membrane assembly. By providing a reinforcing member for a membrane having corrugations and installed in an insulating structural member of an LNG cargo, the present invention can prevent the collapse of the corrugation and attenuate shocks against a same load without increasing the facial rigidity of the corrugation, and improve the insulating property by forming an additional insulating layer.Type: ApplicationFiled: March 3, 2009Publication date: August 4, 2011Applicant: SAMSUNG HEAVY IND. CO., LTD.Inventors: Ki-Hun Joh, Sang-Eon Chun, Chang-Seon Bang, Dai-Gil Lee, Byung-Chul Kim, Bu-Gi Kim, Jin-Gyu Kim, Soon-Ho Yoon, Sang-Wook Park, Kwan-Ho Lee, Seong-Su Kim, Byoung-Jung Kim, Po-Chul Kim, Na-Na Yu, Yong-Suk Suh, Sang-Min Han, Jong-Won Yoon, Jae-Yeon Choi, Hee-Jin Son
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COMPOSITE SEPARATOR FOR POLYMER ELECTROLYTE MEMBRANE FUEL CELL AND METHOD FOR MANUFACTURING THE SAME
Publication number: 20110129737Abstract: The present invention provides a composite separator for a polymer electrolyte membrane fuel cell (PEMFC) and a method for manufacturing the same, in which a graphite foil prepared by compressing expanded graphite is stacked on a carbon fiber-reinforced composite prepreg or a mixed solution prepared by mixing graphite flake and powder with a resin solvent is applied to the cured composite prepreg such that a graphite layer is integrally molded on the outermost end of the separator.Type: ApplicationFiled: June 25, 2010Publication date: June 2, 2011Applicants: HYUNDAI MOTOR COMPANY, KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Dai Gil Lee, Ha Na Yu, Jun Woo Lim, Sae Hoon Kim, Jung Do Suh, Byung Ki Ahn -
Publication number: 20110086292Abstract: The present invention features a fuel cell stack that preferably includes an electricity generating assembly having a plurality of unit cells that are suitably disposed one after another; a pair of end plates pressedly disposed respectively at upper and lower ends of the electricity generating assembly; and a joining device suitably engaging the end plates by a rope, where pressure is applied to the electricity generating assembly by means of tension of the rope, and the length and tension of the rope is suitably controlled.Type: ApplicationFiled: July 14, 2010Publication date: April 14, 2011Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION, KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Haeng Jin Ko, Young Bum Kum, Young Woo Noh, Sae Hoon Kim, Sang Hyun Cho, Jung Do Suh, Kwi Seong Jeong, Junghan Yu, Byung Ki Ahn, Duck Whan Kim, Sung Keun Lee, Dai Gil Lee, Ha Na Yu
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Publication number: 20110076092Abstract: A fixing apparatus of a cargo insulation panel includes a fixing plate adhered to one face of an insulation panel, a plurality of fixing brackets protruded to the outside of the fixing plate, protruded portions of the fixing brackets fixed by stud bolts arranged on the hull, and a plurality of couplers configured to couple the fixing brackets to the fixing plate.Type: ApplicationFiled: November 1, 2010Publication date: March 31, 2011Applicant: SAMSUNG HEAVY IND.CO., LTD.Inventors: Ki-Hun JOH, Sang-Eon Chun, Chang-Seon Bang, Dai-Gil Lee, Byung-Chul Kim, Bu-Gi Kim, Jin-Gyu Kim, Soon-Ho Yoon, Sang-Wook Park, Kwan-Ho Lee, Seong-Su Kim, Byoung-Jung Kim, Po-Chul Kim, Ha-Na Yu, Min-Woo Lim, In-Uk Hwang
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Publication number: 20110056955Abstract: An insulation structure of a cargo tank in an LNG carrier and a method of constructing the insulation structure includes a first metal foil attached and installed in between the top insulation panel and the bottom insulation panel, a second metal foil attached to and installed on the first metal foil that is positioned on an upper side of a gap formed between the bottom insulation panels, and a top bridge panel attached to and installed on an upper side of the second metal foil.Type: ApplicationFiled: November 15, 2010Publication date: March 10, 2011Applicant: SAMSUNG HEAVY IND. CO., LTD.Inventors: Ki-Hun JOH, Sang-Eon Chun, Chang-Seon Bang, Dai-Gil Lee, Byung-Chul Kim, Bu-Gi Kim, Jin-Gyu Kim, Soon-Ho Yoon, Sang-Wook Park, Kwan- Ho Lee, Byoung-Jung Kim, Po-Chul Kim, Ha-Na Yu
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Publication number: 20110056954Abstract: A corner panel of an LNG cargo that includes a main body, which forms a corner area of the cargo, and a stress diverging part, which reduces the convergence of stress of the main body by being integrated with an internal face of the main body and being formed with curvature, and a secondary barrier formed in a curved shape.Type: ApplicationFiled: November 15, 2010Publication date: March 10, 2011Applicant: SAMSUNG HEAVY IND. CO., LTD.Inventors: Ki-Hun JOH, Sang-Eon CHUN, Chang-Seon BANG, Dai-Gil LEE, Byung-Chul KIM, Bu-Gi KIM, Jin-Gyu KIM, Soon-Ho YOON, Sang-Wook PARK, Kwan- Ho LEE, Byoung-Jung KIM, Po-Chul KIM, Ha-Na YU
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Publication number: 20110027604Abstract: In a metal membrane for a low-temperature-fluid storage tank wherein longitudinal and transverse corrugations are formed and both corrugations intersect each other, a bidirectional expandable member connected to each corrugation is formed in the intersection of the corrugations so that the bidirectional expandable member is longitudinally and transversely expandable. The bidirectional expandable member is protruded and is shaped like a pyramid, a dome or a cross. Each metal membrane is welded into a unit panel and the edge of each metal membrane is welded with the common edge of another adjacent metal membrane.Type: ApplicationFiled: October 14, 2010Publication date: February 3, 2011Applicant: SAMSUNG HEAVY IND. CO., LTDInventors: KI-HUN JOH, SANG-EON CHUN, CHANG-SEON BANG, DAI-GIL LEE, BYUNG-CHUL KIM, BU-GI KIM, JIN-GYU KIM, SOON-HO YOON, SANG-WOOK PARK, KWAN-HO LEE, SEONG-SU KIM, BYOUNG-JUNG KIM, PO-CHUL KIM, HA-NA YU
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Patent number: 7867656Abstract: The present invention provides a fuel cell separator formed of a continuous carbon-fiber composite, and a method for manufacturing the same.Type: GrantFiled: August 19, 2008Date of Patent: January 11, 2011Assignees: Hyundai Motor Company, Korea Advanced Institute of Science and TechnologyInventors: Sae Hoon Kim, Sung Ho Lee, Jung Do Suh, Byung Ki Ahn, Tae Won Lim, Dai Gil Lee, Seong Su Kim, Ha Na Yu, In Uk Hwang
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Publication number: 20100230037Abstract: The object of this invention is to provide a hybrid composite journal bearing which is constructed so that a composite liner is positioned on an inner surface of a metal housing having a circular cross-section, thus preventing a journal from being damaged or seized to the bearing, due to friction between the metal or composite journal and the journal bearing. The hybrid composite journal bearing (210) includes a metal housing (211) which is secured on an outer surface thereof to a bearing system and has a circular cross-section A composite liner (212) is laminated to an inner surface of the metal housing (211) with a uniform thickness so as to minimize friction between the journal bearing and a journal.Type: ApplicationFiled: May 17, 2010Publication date: September 16, 2010Applicants: Korea Advanced Institute of Science and Technology, Samsung Heavy Ind. Co., Ltd.Inventors: Dai Gil LEE, Hyoung Geun Kim, Seong Su Kim, Kyung Kun Bang
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Publication number: 20100218377Abstract: The object of this invention is to provide a hybrid composite journal bearing which is constructed so that a composite liner is positioned on an inner surface of a metal housing having a circular cross-section, thus preventing a journal from being damaged or seized to the bearing, due to friction between the metal or composite journal and the journal bearing. The hybrid composite journal bearing (210) includes a metal housing (211) which is secured on an outer surface thereof to a bearing system and has a circular cross-section. A composite liner (212) is laminated to an inner surface of the metal housing (211) with a uniform thickness so as to minimize friction between the journal bearing and a journal.Type: ApplicationFiled: May 17, 2010Publication date: September 2, 2010Applicants: Korea Advanced Institute of Science and Technology, Samsung Heavy Ind. Co., Ltd.Inventors: Dai Gil Lee, Hyoung Geun Kim, Seong Su Kim, Kyung Kun Bang
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Patent number: 7757403Abstract: The object of this invention is to provide a hybrid composite journal bearing which is constructed so that a composite liner is positioned on an inner surface of a metal housing having a circular cross-section, thus preventing a journal from being damaged or seized to the bearing, due to friction between the metal or composite journal and the journal bearing. The hybrid composite journal bearing (210) includes a metal housing (211) which is secured on an outer surface thereof to a bearing system and has a circular cross-section. A composite liner (212) is laminated to an inner surface of the metal housing (211) with a uniform thickness so as to minimize friction between the journal bearing and a journal.Type: GrantFiled: November 15, 2005Date of Patent: July 20, 2010Assignees: Korea Advanced Institute of Science and Technology, Samsung Heavy Ind. Co., Ltd.Inventors: Dai Gil Lee, Hyoung Geun Kim, Seong Su Kim, Kyung Kun Bang
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Publication number: 20090311566Abstract: The present invention provides a separating plate for a fuel cell stack and method of manufacturing the same, and more particularly, to a separating plate for a fuel cell stack and method of manufacturing the same, in which the separating plate constituting the fuel cell stack is formed in such a fashion as to interpose an array of metal pipes between two sheets of composite material, and a gasket abutting against the separating plate is formed in such a fashion as to define hydrogen and air flow channels, thereby removing a contact resistance between two adjoining separating plates constituting unit cells to improve the efficiency of the fuel cell.Type: ApplicationFiled: February 27, 2009Publication date: December 17, 2009Applicants: Hyundai Motor Company, Korea Advanced Institute of Science and TechnologyInventors: Sae Hoon Kim, Yoo Chang Yang, Sung Ho Lee, Jung Do Suh, Byung Ki Ahn, Tae Won Lim, Dai Gil Lee, Seong Su Kim, Ha Na Yu, In Uk Hwang, Byoung Chul Kim, Kwan Ho Lee, Soon Ho Yoon
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Publication number: 20090286134Abstract: The present invention provides an end plate for fuel cell stack and a method for manufacturing an end plate, which can increase flexural rigidity per weight, and improve strain at break, and reduce heat transmission by applying hybrid core element having honeycomb and form structures to an end plate having sandwich structure combined to both end portions of a fuel cell stack.Type: ApplicationFiled: November 24, 2008Publication date: November 19, 2009Applicants: HYUNDAI MOTOR COMPANY, KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Sae Hoon Kim, Sung Ho Lee, Jung Do Suh, Byung Ki Ahn, Tae Won Lim, Dai Gil Lee, Seong Su Kim, Ha Na Yu, In Uk Hwang
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Publication number: 20090269671Abstract: The present invention provides a fuel cell separator formed of a continuous carbon-fiber composite, and a method for manufacturing the same.Type: ApplicationFiled: August 19, 2008Publication date: October 29, 2009Applicants: Hyundai Motor Company, Korea Advanced Institute of Science and TechnologyInventors: Sae Hoon Kim, Sung Ho Lee, Jung Do Suh, Byung Ki Ahn, Tae Won Lim, Dai Gil Lee, Seong Su Kim, Ha Na Yu, In Uk Hwang
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Patent number: 7606386Abstract: A vibration actuator excites a mass member by interaction between an electric field of a vibration coil provided in an inner space of a case and a magnetic field of a magnetic field unit disposed corresponding to the vibration coil. The vibration actuator has an elastic wire having a wire body fixed to the outer surface of the mass member and elastic ends fixed to the inner surface of the case. The elastic wire is connected between the case and the mass member for elastically supporting mass member.Type: GrantFiled: April 14, 2005Date of Patent: October 20, 2009Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Dae Lyun Kang, Dai Gil Lee, Sang Wook Park, Hak Sung Kim, Seuk Hwan Chung, Seong Geun Kim, Sang Won Kim, Jun Kun Choi