Patents by Inventor Ja-choon Koo
Ja-choon Koo 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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Publication number: 20240074351Abstract: A crop harvesting apparatus includes a pressure generator configured to generate a pressure, a driver configured to have a shape that changes in response to receiving the pressure from the pressure generator, and a cutter configured to cut an object to be cut in accordance with a change in the shape of the driver.Type: ApplicationFiled: September 1, 2023Publication date: March 7, 2024Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITYInventors: Ja Choon KOO, Yeo Il YUN, Eun Jeong SONG, Moo Heon LEE, Seon Il LEE
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Publication number: 20230217859Abstract: A pneumatic cutter with a concealed blade includes a pouch in which an inner space filled with air is formed and which includes a variable portion configured to, upon a pneumatic pressure being applied to an inner portion of the pouch, protrude outward as the inner space expands and, in a case where the pneumatic pressure is not applied to the inner portion of the pouch, be concavely recessed inward as the inner space contracts; and a blade installed at the variable portion and configured to, upon the variable portion protruding outward due to the pneumatic pressure being applied to the inner portion of the pouch, protrude toward an object to be cut and cut the object to be cut.Type: ApplicationFiled: January 10, 2023Publication date: July 13, 2023Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITYInventors: Ja Choon KOO, Yeo Il YUN, Eun Jeong SONG, Seon Il LEE, Moo Heon LEE
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Patent number: 11603870Abstract: A rotary actuator may include a first holder in which a fluid injecting portion is formed, a second holder rotatably coupled to the first holder, a flexible body fixed to the first holder and the second holder and configured to expand as a fluid is injected through the first holder, and a plurality of fibers radially disposed in a spiral shape at the flexible body and configured to rotate the flexible body when the flexible body expands.Type: GrantFiled: February 15, 2022Date of Patent: March 14, 2023Assignee: Research & Business Foundation Sungkyunkwan UniversityInventors: Ja Choon Koo, Young Min Lee, Dong Jun Oh, Hyung Pil Moon, Hyouk Ryeol Choi
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Publication number: 20230015585Abstract: A soft pneumatic module includes a first frame defining a first path portion, a second frame opposite to the first frame and defining a second path portion, a retainer connected to the first frame and the second frame, a plurality of first crease parts disposed along a circumference of the first frame at two sides of the retainer and obliquely disposed inward from the first frame, and a plurality of second crease parts connected to the plurality of first crease parts and the second frame, disposed along a circumference of the second frame at the two sides of the retainer, and expanded along with the plurality of first crease parts as a fluid is injected into the soft pneumatic module.Type: ApplicationFiled: May 5, 2022Publication date: January 19, 2023Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITYInventors: Ja Choon KOO, Yeo Il YUN, Eun Jeong SONG, Seon Il LEE, Seung Ho LEE
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Publication number: 20220260096Abstract: A rotary actuator may include a first holder in which a fluid injecting portion is formed, a second holder rotatably coupled to the first holder, a flexible body fixed to the first holder and the second holder and configured to expand as a fluid is injected through the first holder, and a plurality of fibers radially disposed in a spiral shape at the flexible body and configured to rotate the flexible body when the flexible body expands.Type: ApplicationFiled: February 15, 2022Publication date: August 18, 2022Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITYInventors: Ja Choon KOO, Young Min LEE, Dong Jun OH, Hyung Pil MOON, Hyouk Ryeol CHOI
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Patent number: 11104007Abstract: Provided are an apparatus and method for controlling a robot. The apparatus includes an active force detector configured to detect an active force, to which a natural force caused by a physical interaction between a user and a robot and not reflecting an operation intention of the user is applied, applied by the user to the robot operating through the physical interaction with the user, a compensator configured to determine a compensation force for actively compensating for the natural force applied to the active force by using a method of optimizing an internal parameter of a predefined dynamics model, and a controller configured to determine an operation instruction for controlling an operation of the robot from a result obtained by applying the compensation force determined by the compensator to the active force detected by the active force detector and operate the robot.Type: GrantFiled: January 2, 2020Date of Patent: August 31, 2021Assignee: Research & Business Foundation Sungkyunkwan UniversityInventors: Ja Choon Koo, Kyeong Ha Lee, Seung Guk Baek, Hyun Jin Lee
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Publication number: 20200206943Abstract: Provided are an apparatus and method for controlling a robot. The apparatus includes an active force detector configured to detect an active force, to which a natural force caused by a physical interaction between a user and a robot and not reflecting an operation intention of the user is applied, applied by the user to the robot operating through the physical interaction with the user, a compensator configured to determine a compensation force for actively compensating for the natural force applied to the active force by using a method of optimizing an internal parameter of a predefined dynamics model, and a controller configured to determine an operation instruction for controlling an operation of the robot from a result obtained by applying the compensation force determined by the compensator to the active force detected by the active force detector and operate the robot.Type: ApplicationFiled: January 2, 2020Publication date: July 2, 2020Applicant: Research & Business Foundation Sungkyunkwan UniversityInventors: Ja Choon KOO, Kyeong Ha LEE, Seung Guk BAEK, Hyun Jin LEE
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Patent number: 9805626Abstract: The present invention relates to a respiration mimic device, and includes a chamber having an interior space filled with fluid, a lung mimic, to be contracted or expanded, accommodated at the interior space in the chamber; a lung copying unit including a tumor mimic distributed in the lung mimic; a driving unit for copying motion patterns of the lung according to actual respiration and contracting or expanding the lung mimic; and an abdomen copying unit for elevating vertically according to contraction or expansion of the lung mimic and copying an abdomen.Type: GrantFiled: November 16, 2014Date of Patent: October 31, 2017Assignee: THE CATHOLIC UNIVERSITY OF KOREA INDUSTRY-ACADEMIC COOPERATION FOUNDATIONInventors: Young Nam Kang, Hong Seok Jang, Ja Choon Koo, Ji Na Kim, Hun Joo Shin, Young Kyu Lee, Jae Choon Lee, Hyoung Wook Park, Hyuk Jin Lee, Hae Jin Lee
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Publication number: 20170042502Abstract: The present disclosure relates to a lung phantom system provided with an elastic film that separates a first chamber and a second chamber having inner space that may be filled with liquid, the elastic film configured to repeat expansion and restoration according to introduction and discharge of liquid, thereby providing an effect of accurately replicating movements of an actual lung during its respiratory movement.Type: ApplicationFiled: August 11, 2016Publication date: February 16, 2017Applicant: Research & Business Foundation SUNGKYUNKWAN UNIVERSITYInventors: Ja Choon KOO, Hyuk Jin LEE, Hae Jin LEE, Ji Na KIM, Young Nam KANG, Hong Seok JANG
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Patent number: 9434801Abstract: Provided are a polymer and a polymer actuator including the polymer. The polymer is cross-linked by a cross-linking agent. When the polymer is used in the polymer actuator, the polymer actuator shows a high strain and may be stably operated at high temperatures.Type: GrantFiled: September 4, 2013Date of Patent: September 6, 2016Assignees: SAMSUNG ELECTRONICS CO., LTD., SUNGKYUNKWAN UNIVERSITY FOUNDATION FOR CORPORATE COLLABORATIONInventors: Seung-Tae Choi, Young-kwan Lee, Ja-Choon Koo, Jong-oh Kwon, Su-jin Park
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Publication number: 20150317918Abstract: The present invention relates to a respiration mimic device, and includes a chamber having an interior space filled with fluid, a lung mimic, to be contracted or expanded, accommodated at the interior space in the chamber; a lung copying unit including a tumor mimic distributed in the lung mimic; a driving unit for copying motion patterns of the lung according to actual respiration and contracting or expanding the lung mimic; and an abdomen copying unit for elevating vertically according to contraction or expansion of the lung mimic and copying an abdomen.Type: ApplicationFiled: November 16, 2014Publication date: November 5, 2015Inventors: YOUNG NAM KANG, HONG SEOK JANG, JA CHOON KOO, JI NA KIM, HUN JOO SHIN, YOUNG KYU LEE, JAE CHOON LEE, HYOUNG WOOK PARK, HYUK JIN LEE, HAE JIN LEE
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Patent number: 9007072Abstract: There is provided a capacitor sensor capable of controlling sensitivity, wherein the capacitor sensor measures the magnitude and direction of a shear force applied to the sensor, as well as the magnitude of a normal force applied on the surface of the sensor, and consists of a single cell including a pattern electrode capable of varying its shape to control the sensitivity of the sensor.Type: GrantFiled: August 8, 2012Date of Patent: April 14, 2015Assignee: Research & Business Foundation Sungkyunkwan UniversityInventors: Ja Choon Koo, Hyouk Ryeol Choi, Hyung Pil Moon, Young Kwan Lee, Jae Do Nam, Baek Chul Kim, Jin Ah Chung, Sung Gi Kim
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Patent number: 8915151Abstract: Disclosed is an active skin including: a tactile sensor substrate which includes a first film including a dielectric elastic material and formed with a plurality of sensing points, and a pair of first electrodes respectively formed on upper and lower sides of the sensing point; a tactile actuator substrate which includes a second film including a dielectric elastic material and formed with a plurality of actuating points, and a pair of second electrodes respectively formed on upper and lower sides of the actuating point; and an insulating layer which is interposed between the tactile sensor substrate and the tactile actuator substrate and couples the tactile sensor substrate and the tactile actuator substrate. With this, a tactile sensor and a tactile actuator are integrated, so that there is provided an interactive tactile interface to not only feel like a human's skin but also actively move like a muscle.Type: GrantFiled: June 1, 2010Date of Patent: December 23, 2014Assignee: Sungkyunkwan University Foundation for Corporate CollaborationInventors: Hyouk-Ryeol Choi, Hyung-Pil Moon, Ja-Choon Koo, Se-Gon Roh
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Patent number: 8641970Abstract: A clinical test apparatus employing a mobile robot is provided. The clinical test apparatus includes a stage unit, a test station provided in the stage unit and configured to perform a clinical test, a mobile robot configured to move on a top surface of the stage unit and to transfer a plate on which samples and reagents are loaded to the test station, and a docking unit disposed in the stage unit and configured to reset a position of the mobile robot. A variety of test stations for a clinical test can be integrated, and multiple tests can be performed at the same time through a plurality of mobile robots.Type: GrantFiled: July 13, 2007Date of Patent: February 4, 2014Assignee: Postech Academy-Industry FoundationInventors: Wan Kyun Chung, Hyouk Ryeol Choi, Sung Moo Ryu, Min Chul Kim, Ja Choon Koo
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Publication number: 20140001924Abstract: Provided are a polymer and a polymer actuator including the polymer. The polymer is cross-linked by a cross-linking agent. When the polymer is used in the polymer actuator, the polymer actuator shows a high strain and may be stably operated at high temperatures.Type: ApplicationFiled: September 4, 2013Publication date: January 2, 2014Applicants: SUNGKYUNKWAN UNIVERSITY FOUNDATION FOR CORPORATE COLLABORATION, SAMSUNG ELECTRONICS CO., LTD.Inventors: Seung-Tae CHOI, Young-kwan LEE, Ja-Choon KOO, Jong-oh KWON, Su-jin PARK
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Patent number: 8593616Abstract: An actuator according to example embodiments may be relatively compact and may be driven with 2 degrees of freedom with less spatial constraints. The actuator may include a base member, a ball screw member including a ball screw coupled to the base member and a ball nut screwed onto the ball screw, a driving member coupled to the ball nut so as to move in conjunction with the ball nut, a first directional displacement member configured to move in a first direction in response to a first movement of the driving member, a wedge member coupled to the driving member so as to be moved in a second direction in response to a second movement of the driving member, a second directional displacement member configured to move in a second direction in conjunction with the wedge member, and a binding member configured to bind the first directional displacement member to at least one of the driving member, the wedge member, and the base member.Type: GrantFiled: November 19, 2010Date of Patent: November 26, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Sang Joon Hong, Sang Hyun Park, Sang Don Jang, Oui Serg Kim, Ja Choon Koo, Yong Seok Ihn, Jung Woong Jang, Yoo Chang Kim
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Patent number: 8552623Abstract: Provided are a polymer and a polymer actuator including the polymer. The polymer is cross-linked by a cross-linking agent. When the polymer is used in the polymer actuator, the polymer actuator shows a high strain and may be stably operated at high temperatures.Type: GrantFiled: February 12, 2010Date of Patent: October 8, 2013Assignees: Samsung Electronics Co., Ltd., Sungkyunkwan University Foundation for Corporate CollaborationInventors: Seung-tae Choi, Young-kwan Lee, Ja-Choon Koo, Jong-oh Kwon, Su-jin Park
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Patent number: 8480917Abstract: A solid electrolyte polymer including a cross-linked polyvinylidene fluoride (PVDF)-based polymer, and a polymer actuator including the cross-linked PVDF-based polymer and an electrolytic material.Type: GrantFiled: December 8, 2009Date of Patent: July 9, 2013Assignees: Samsung Electronics Co., Ltd., Sungkyunkwan University Foundation for Corporate CollaborationInventors: Jong-oh Kwon, Seung-tae Choi, Young-kwan Lee, Ja-Choon Koo, Su-jin Park
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Publication number: 20130093437Abstract: There is provided a capacitor sensor capable of controlling sensitivity, wherein the capacitor sensor measures the magnitude and direction of a shear force applied to the sensor, as well as the magnitude of a normal force applied on the surface of the sensor, and consists of a single cell including a pattern electrode capable of varying its shape to control the sensitivity of the sensor.Type: ApplicationFiled: August 8, 2012Publication date: April 18, 2013Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITYInventors: Ja Choon KOO, Hyouk Ryeol CHOI, Hyung Pil MOON, Young Kwan LEE, Jae Do NAM, Baek Chul KIM, Jin Ah CHUNG, Sung Gi KIM
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Publication number: 20110134409Abstract: An actuator according to example embodiments may be relatively compact and may be driven with 2 degrees of freedom with less spatial constraints. The actuator may include a base member, a ball screw member including a ball screw coupled to the base member and a ball nut screwed onto the ball screw, a driving member coupled to the ball nut so as to move in conjunction with the ball nut, a first directional displacement member configured to move in a first direction in response to a first movement of the driving member, a wedge member coupled to the driving member so as to be moved in a second direction in response to a second movement of the driving member, a second directional displacement member configured to move in a second direction in conjunction with the wedge member, and a binding member configured to bind the first directional displacement member to at least one of the driving member, the wedge member, and the base member.Type: ApplicationFiled: November 19, 2010Publication date: June 9, 2011Applicant: Samsung Electronics Co., Ltd.Inventors: Sang Joon Hong, Sang Hyun Park, Sang Don Jang, Oui Serg Kim, Ja Choon Koo, Yong Seok Ihn, Jung Woong Jang, Yoo Chang Kim