Patents by Inventor Chang Hwan Lee
Chang Hwan 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).
-
Publication number: 20170101729Abstract: A method of manufacturing stab-resistant fabric using water punching is provided. Aramid fabric and nonwoven aramid fabric are combined through water punching, thereby enhancing activities by ensuring flexibility and stab-resistance performance, and the method is an aramid composite fabric manufacturing method which performs water punching with pressure of 50 to 250 bar when the water punching is performed.Type: ApplicationFiled: October 27, 2015Publication date: April 13, 2017Inventors: Young Kyu RHEE, Kyung Ju LEE, Chang Hwan LEE, Hu Fan HONG, Nan Sae LEE
-
Publication number: 20170052077Abstract: The present invention relates to a rotor including a shaft sleeve having a shaft sleeve main body and a stopper formed to protrude outward from an end portion of the shaft sleeve main body; a magnet disposed on an outer circumferential surface of the shaft sleeve and a lower portion thereof is supported by the stopper; and a fixing part which fixes an upper portion of the magnet, and a torque sensor and an electronic power steering system including the same. Due to the above structure, a broken magnet is prevented from deviating even when a magnet is broken.Type: ApplicationFiled: August 11, 2016Publication date: February 23, 2017Applicant: LG INNOTEK CO., LTD.Inventor: Chang Hwan LEE
-
Patent number: 9557366Abstract: Provided are a tester configured to test a semiconductor device and a test system including the same. The tester may include at least one contact unit and at least one memory controller. The contact unit is in contact with the semiconductor device. The memory controller is connected to the contact unit. The memory controller controls data input/output (I/O) operations of the semiconductor device and tests the semiconductor device.Type: GrantFiled: September 12, 2014Date of Patent: January 31, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventor: Chang-hwan Lee
-
Patent number: 9500543Abstract: A torque angle sensor according to an exemplary embodiment of the present disclosure includes a torque sensor unit and an angle sensor unit at a housing centrally arranged with a rotation shaft, the torque sensor unit including a stator installed inside the housing, a torque magnet rotatably installed at a center of the stator in conjunction with rotary operation of the rotation shaft, a collector installed at the housing to transmit a magnetic field of the torque magnet, a magnetic device module formed with an individually operating first magnetic device and a second magnetic device in one package to detect the magnetic field transmitted by the collector, and a PCB (Printed Circuit Board) mounted with the magnetic device module, wherein the PCB is arranged to a direction perpendicular to an axial direction of the rotation shaft and installed at a distal end with the magnetic device module.Type: GrantFiled: June 30, 2015Date of Patent: November 22, 2016Assignee: LG INNOTEK CO., LTD.Inventors: Chang Hwan Lee, Young Wuk Lee, Myung Chul Woo
-
Publication number: 20160267182Abstract: A mail service method for searching for mail in a mail service system configured as a computer includes setting at least one of a plurality of items configuring a format of mail data as at least one card item, receiving a keyword, searching for mail data that includes the keyword, configuring a separate mail list for the at least one card item by selecting mail data that includes the keyword in the at least one card item, creating a mail card that includes a tag indicating the at least one card item and a link to the configured separate mail list, and creating and providing a search result that includes the created mail card.Type: ApplicationFiled: August 19, 2015Publication date: September 15, 2016Inventors: Jung Sub Shin, Chang Hwan Lee, Eungyo Jung, Jinsu Park, Yeon Ah Park, Myungpyo Shim, Sungwoo Choo, Hye Ryun An
-
Publication number: 20160229448Abstract: Provided is a power steering sensor assembly which is capable of maintaining a stable coupling between a sensing device and a housing without using a separate auxiliary member, and is mounted in an electric power steering system. The power steering sensor assembly includes a sensing device including a plurality of coupling projections formed on an outer circumferential surface thereof, and a first housing having the sensing device housed therein and including a plurality of coupling grooves formed on an inner circumferential surface thereof, the coupling grooves each having an upper end which is opened. When the sensing device is housed in the first housing, the coupling projections of the sensing device are inserted into the coupling grooves of the first housing, respectively, such that the sensing device is coupled to the first housing without being moved in a radial direction and an axial direction.Type: ApplicationFiled: April 15, 2016Publication date: August 11, 2016Inventor: Chang Hwan LEE
-
Patent number: 9400290Abstract: A torque index sensor according to an embodiment of the present invention includes a rotor rotating with the first shaft which is one of an input shaft and an output shaft having a first magnet on an outer circumferential surface thereof, a stator disposed on an outer side of the first magnet and rotating with the second shaft which is the other of the input shaft and the output shaft, a shield disposed on a lower side of the stator and rotating with the second shaft and a second magnet combined with a lower side of the shield and rotating with the second shaft. The torque index sensor shields magnetic field interference and improves operational reliability.Type: GrantFiled: September 25, 2014Date of Patent: July 26, 2016Assignee: LG INNOTEK CO., LTD.Inventor: Chang Hwan Lee
-
Patent number: 9389148Abstract: Provided is a power steering sensor assembly which is capable of maintaining a stable coupling between a sensing device and a housing without using a separate auxiliary member, and is mounted in an electric power steering system. The power steering sensor assembly includes a sensing device including a plurality of coupling projections formed on an outer circumferential surface thereof; and a first housing having the sensing device housed therein and including a plurality of coupling grooves formed on an inner circumferential surface thereof, the coupling grooves each having an upper end which is opened. When the sensing device is housed in the first housing, the coupling projections of the sensing device are inserted into the coupling grooves of the first housing, respectively, such that the sensing device is coupled to the first housing without being moved in a radial direction and an axial direction.Type: GrantFiled: October 25, 2013Date of Patent: July 12, 2016Assignee: LG INNOTEK CO., LTD.Inventor: Chang Hwan Lee
-
Publication number: 20150365124Abstract: A protective cover for an electronic device is provided. The electronic device includes a protective cover configured to protect at least a partial region of the electronic device. The protective cover is detachably connectable with the electronic device by a snap-fit structure provided on at least one portion in surface contact with the electronic device.Type: ApplicationFiled: June 11, 2015Publication date: December 17, 2015Inventors: Moon-Seok CHOI, Chang-Hwan Lee, Jin-Woo Kim
-
Publication number: 20150300898Abstract: A torque angle sensor according to an exemplary embodiment of the present disclosure includes a torque sensor unit and an angle sensor unit at a housing centrally arranged with a rotation shaft, the torque sensor unit including a stator installed inside the housing, a torque magnet rotatably installed at a center of the stator in conjunction with rotary operation of the rotation shaft, a collector installed at the housing to transmit a magnetic field of the torque magnet, a magnetic device module formed with an individually operating first magnetic device and a second magnetic device in one package to detect the magnetic field transmitted by the collector, and a PCB (Printed Circuit Board) mounted with the magnetic device module, wherein the PCB is arranged to a direction perpendicular to an axial direction of the rotation shaft and installed at a distal end with the magnetic device module.Type: ApplicationFiled: June 30, 2015Publication date: October 22, 2015Inventors: Chang Hwan LEE, Young Wuk LEE, Myung Chul WOO
-
Patent number: 9109965Abstract: A torque angle sensor according to an exemplary embodiment of the present disclosure includes a torque sensor unit and an angle sensor unit at a housing centrally arranged with a rotation shaft, the torque sensor unit including a stator installed inside the housing, a torque magnet rotatably installed at a center of the stator in conjunction with rotary operation of the rotation shaft, a collector installed at the housing to transmit a magnetic field of the torque magnet, a magnetic device module formed with an individually operating first magnetic device and a second magnetic device in one package to detect the magnetic field transmitted by the collector, and a PCB (Printed Circuit Board) mounted with the magnetic device module, wherein the PCB is arranged to a direction perpendicular to an axial direction of the rotation shaft and installed at a distal end with the magnetic device module.Type: GrantFiled: May 15, 2013Date of Patent: August 18, 2015Assignee: LG INNOTEK CO., LTD.Inventors: Chang Hwan Lee, Young Wuk Lee, Myung Chul Woo
-
Publication number: 20150090051Abstract: A torque index sensor according to an embodiment of the present invention includes a rotor rotating with the first shaft which is one of an input shaft and an output shaft having a first magnet on an outer circumferential surface thereof, a stator disposed on an outer side of the first magnet and rotating with the second shaft which is the other of the input shaft and the output shaft, a shield disposed on a lower side of the stator and rotating with the second shaft and a second magnet combined with a lower side of the shield and rotating with the second shaft. The torque index sensor shields magnetic field interference and improves operational reliability.Type: ApplicationFiled: September 25, 2014Publication date: April 2, 2015Inventor: Chang Hwan Lee
-
Patent number: 8997253Abstract: Disclosed is a method and system of preventing browser-based abuse. The method of preventing browser-based abuse may include determining whether an access based on a browser function extension module is a malicious access for acquiring data of an Internet browser, and blocking the access based on the browser function extension module when the access is determined to be a malicious access.Type: GrantFiled: November 3, 2009Date of Patent: March 31, 2015Assignee: NHN Business Platform CorporationInventors: Oh-Hyun Kwon, Hyun-Jong Kim, Chang-Hwan Lee
-
Patent number: 8984964Abstract: Provided is a torque measurement device including a stator in which a space portion is formed by a first annular ring and a second annular ring having protrusion pieces, a ring-shaped magnet disposed in the space portion, and a collector assembly including a first collector member and a second collector member to form at least one insertion space in which a magnetic element is disposed, wherein the insertion space is formed by bending an end of the first collector member and an end of the second collector member toward the space portion.Type: GrantFiled: November 8, 2013Date of Patent: March 24, 2015Assignee: LG Innotek Co., Ltd.Inventor: Chang Hwan Lee
-
Patent number: 8955396Abstract: Disclosed are a stator assembly and a torque assembly device. The stator assembly includes a stator holder, a first stator which includes a first body making contact with an upper end of the stator holder and a plurality of first teeth extending from the first body so as to be disposed inside the stator holder, a second stator which includes a second body making contact with a lower end of the stator holder and a plurality of second teeth extending from the second body so to be alternately aligned with the first teeth inside the stator holder, and a fusion-welded material that is fusion-welded to the stator holder and the first and second bodies.Type: GrantFiled: September 17, 2013Date of Patent: February 17, 2015Assignee: LG Innotek Co., Ltd.Inventors: Sung Kyu Bae, Chang Hwan Lee
-
Publication number: 20140375349Abstract: Provided are a tester configured to test a semiconductor device and a test system including the same. The tester may include at least one contact unit and at least one memory controller. The contact unit is in contact with the semiconductor device. The memory controller is connected to the contact unit. The memory controller controls data input/output (I/O) operations of the semiconductor device and tests the semiconductor device.Type: ApplicationFiled: September 12, 2014Publication date: December 25, 2014Applicant: SAMSUNG ELECTRONICS CO., LTDInventor: Chang-hwan LEE
-
Patent number: 8875588Abstract: Provided is a complex sensing apparatus for a steering system. In the complex sensing apparatus in accordance, since an insertion projections of a first PCB are inserted into a through-holes of a second PCB to be press-fitted to each other, the first PCB is securely coupled to the second PCB. In addition, since a support member configured to surround and support an edge of the first PCB is coupled to the second PCB, the first PCB is more securely coupled to the second PCB. Accordingly, since there is no probability of separating the first PCB from the second PCB and there is no probability of occurrence of cracks in a soldered part between the first and second PCBs, reliability of products can be improved.Type: GrantFiled: July 15, 2009Date of Patent: November 4, 2014Assignee: LG Innotek Co., Ltd.Inventors: Yong Chul Kim, Chang Hwan Lee
-
Patent number: 8860452Abstract: Provided are a tester configured to test a semiconductor device and a test system including the same. The tester may include at least one contact unit and at least one memory controller. The contact unit is in contact with the semiconductor device. The memory controller is connected to the contact unit. The memory controller controls data input/output (I/O) operations of the semiconductor device and tests the semiconductor device.Type: GrantFiled: December 16, 2011Date of Patent: October 14, 2014Assignee: Samsung Electronics Co., LtdInventor: Chang-hwan Lee
-
Publication number: 20140123770Abstract: Provided is a torque measurement device including a stator in which a space portion is formed by a first annular ring and a second annular ring having protrusion pieces, a ring-shaped magnet disposed in the space portion, and a collector assembly including a first collector member and a second collector member to form at least one insertion space in which a magnetic element is disposed, wherein the insertion space is formed by bending an end of the first collector member and an end of the second collector member toward the space portion.Type: ApplicationFiled: November 8, 2013Publication date: May 8, 2014Applicant: LG INNOTEK CO., LTD.Inventor: Chang Hwan LEE
-
Publication number: 20140047914Abstract: Provided is a power steering sensor assembly which is capable of maintaining a stable coupling between a sensing device and a housing without using a separate auxiliary member, and is mounted in an electric power steering system. The power steering sensor assembly includes a sensing device including a plurality of coupling projections formed on an outer circumferential surface thereof, and a first housing having the sensing device housed therein and including a plurality of coupling grooves formed on an inner circumferential surface thereof, the coupling grooves each having an upper end which is opened. When the sensing device is housed in the first housing, the coupling projections of the sensing device are inserted into the coupling grooves of the first housing, respectively, such that the sensing device is coupled to the first housing without being moved in a radial direction and an axial direction.Type: ApplicationFiled: October 25, 2013Publication date: February 20, 2014Applicant: LG INNOTEK CO., LTD.Inventor: Chang Hwan LEE