Patents by Inventor Chan-bum Park
Chan-bum Park 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: 20240030404Abstract: Provided are a negative electrode manufacturing method capable of forming a graphite layer oriented in one direction by using a dry process, and a negative electrode and a lithium secondary battery manufactured using the method. The manufacturing method includes: preparing a powder mixture including a plate-shaped graphite and a binder; a granulation step of preparing a graphite granule by processing the powder mixture such that graphite is oriented in one direction; preparing a graphite film in which the graphite is oriented in a thickness direction by shaping the prepared graphite granule; and laminating the graphite film on at least one surface of a negative electrode substrate.Type: ApplicationFiled: March 21, 2023Publication date: January 25, 2024Inventors: Hannah Song, Hyunjin Kim, Chan Bum Park
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Patent number: 7543314Abstract: An optical disc drive includes a main chassis, a deck unit mounted on the main chassis to move upward and downward, and a slider installed movably on the main chassis. The slider moves the deck unit upward and downward while moving on the main chassis and an impact absorbing member, interposed between the slider and the deck unit, absorbs an impact transmitted to the deck unit.Type: GrantFiled: November 8, 2005Date of Patent: June 2, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Chan-Bum Park, Tae-Myun Kim
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Patent number: 7383558Abstract: An optical disc drive has an improved vibration preventing device. A main chassis has opposite sidewalls and first and second mold tension parts integrally formed with the sidewalls, respectively. A pickup deck has a turn table adapted to receive a disc and a pickup moving in a radial direction of the disc and mounted to the main chassis to move up and down. A sub chassis has first and second mold tension guide parts mounted on a front of the pickup deck and supported by and under the first and the second mold tension parts. A disc tray moves inwardly and outwardly with respect to the main chassis. The mold tension guide parts of the sub chassis are elastically supported by the mold tension parts of the main chassis in an up-position of the pickup deck, thereby absorbing external impacts and inner vibrations.Type: GrantFiled: February 4, 2005Date of Patent: June 3, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Tae-myun Kim, Chan-bum Park
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Patent number: 7328445Abstract: An apparatus for transferring a pickup of a disc drive which is movably installed on a pickup deck to move the pickup for recording/reproducing information by emitting light onto a disc. The appartus includes a lead screw rotatably installed at one side of the pickup deck, wherein a plurality of screw grooves are formed on an outer circumferential surface of the lead screw, and a slider coupled to the pickup and having at least one first protrusion closely inserted in the screw grooves of the lead screw to convert a rotational motion of the lead screw to a linear motion of the pickup. The pickup also has at least one second protrusion inserted in the screw grooves of the lead screw to prevent the first protrusion from being separated from the screw grooves of the lead screw.Type: GrantFiled: December 17, 2003Date of Patent: February 5, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Chan-Bum Park, Go-Hyun Kim
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Patent number: 7213251Abstract: A tilt adjusting apparatus for an optical disc player to adjust a tilt of an optical pickup having adjusting ends positioned on at least first ends of two guide shafts that guide reciprocating motion of the optical pickup, elastic members positioned below the adjusting ends to bias the adjusting ends in a first direction, stoppers positioned on brackets above the adjusting end, to limit adjustment of the adjusting ends in the first direction, and adjusting screws coupled to the stoppers, to adjust the adjusting ends in a second direction opposite the first direction, thereby adjusting the inclination of the guide shafts. The stoppers are sized so that the optical pickup does not contact a lower surface of the disc even during large inclinations of the guide shaft.Type: GrantFiled: July 1, 2003Date of Patent: May 1, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Chan-bum Park, Jueng-rak Lee
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Patent number: 7124421Abstract: A lead screw adjustment structure of a disc drive to adjust a lead screw which is rotatably installed on a pickup deck and reciprocates a pickup, which includes an incorporated elastic member installed on the pickup deck to apply an elastic force in an upward direction and an axial direction to one end portion of the lead screw, and an adjustment screw disposed above the elastic member to adjust the end portion of the lead screw up and down by being rotated.Type: GrantFiled: December 17, 2003Date of Patent: October 17, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Won-youl Bae, Chan-bum Park
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Publication number: 20060168600Abstract: An optical disc drive includes a main chassis, a deck unit mounted on the main chassis to move upward and downward, and a slider installed movably on the main chassis. The slider moves the deck unit upward and downward while moving on the main chassis and an impact absorbing member, interposed between the slider and the deck unit, absorbs an impact transmitted to the deck unit.Type: ApplicationFiled: November 8, 2005Publication date: July 27, 2006Inventors: Chan-Bum Park, Tae-Myun Kim
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Publication number: 20060020957Abstract: An optical disc drive has an improved vibration preventing device. A main chassis has opposite sidewalls and first and second mold tension parts integrally formed with the sidewalls, respectively. A pickup deck has a turn table adapted to receive a disc and a pickup moving in a radial direction of the disc and mounted to the main chassis to move up and down. A sub chassis has first and second mold tension guide parts mounted on a front of the pickup deck and supported by and under the first and the second mold tension parts. A disc tray moves inwardly and outwardly with respect to the main chassis. The mold tension guide parts of the sub chassis are elastically supported by the mold tension parts of the main chassis in an up-position of the pickup deck, thereby absorbing external impacts and inner vibrations.Type: ApplicationFiled: February 4, 2005Publication date: January 26, 2006Inventors: Tae-myun Kim, Chan-bum Park
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Publication number: 20050034141Abstract: A lead screw adjustment structure of a disc drive to adjust a lead screw which is rotatably installed on a pickup deck and reciprocates a pickup, which includes an incorporated elastic member installed on the pickup deck to apply an elastic force in an upward direction and an axial direction to one end portion of the lead screw, and an adjustment screw disposed above the elastic member to adjust the end portion of the lead screw up and down by being rotated.Type: ApplicationFiled: December 17, 2003Publication date: February 10, 2005Applicant: Samsung Electronics Co., Ltd.Inventors: Won-Youl Bae, Chan-Bum Park
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Publication number: 20050034142Abstract: An apparatus for transferring a pickup of a disc drive which is movably installed on a pickup deck to move the pickup for recording/reproducing information by emitting light onto a disc. The appartus includes a lead screw rotatably installed at one side of the pickup deck, wherein a plurality of screw grooves are formed on an outer circumferential surface of the lead screw, and a slider coupled to the pickup and having at least one first protrusion closely inserted in the screw grooves of the lead screw to convert a rotational motion of the lead screw to a linear motion of the pickup. The pickup also has at least one second protrusion inserted in the screw grooves of the lead screw to prevent the first protrusion from being separated from the screw grooves of the lead screw.Type: ApplicationFiled: December 17, 2003Publication date: February 10, 2005Inventors: Chan-Bum Park, Go-Hyun Kim
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Publication number: 20040028394Abstract: A tilt adjusting apparatus for an optical disc player to adjust a tilt of an optical pickup having adjusting ends positioned on at least first ends of two guide shafts that guide reciprocating motion of the optical pickup, elastic members positioned below the adjusting ends to bias the adjusting ends in a first direction, stoppers positioned on brackets above the adjusting end, to limit adjustment of the adjusting ends in the first direction, and adjusting screws coupled to the stoppers, to adjust the adjusting ends in a second direction opposite the first direction, thereby adjusting the inclination of the guide shafts. The stoppers are sized so that the optical pickup does not contact a lower surface of the disc even during large inclinations of the guide shaft.Type: ApplicationFiled: July 1, 2003Publication date: February 12, 2004Applicant: Samsung Electronics Co., Ltd.Inventors: Chan-bum Park, Jueng-rak Lee
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Patent number: 6289038Abstract: A radio system is disclosed for supporting a greater number of users than can be supported in a conventional CDMA system that supports multiple users. The radio system is a hybrid system combining elements of conventional spread spectrum techniques. The system may be defined as a parallel hopping hybrid direct sequence (DS)/slow frequency hopping (SFH) code division multiple access (CDMA) system in combination with a DS/CDMA system, frequency hopping (FH)/CDMA system and a multi-carrier system.Type: GrantFiled: April 24, 2000Date of Patent: September 11, 2001Assignee: Samsung Electronics Co., Inc.Inventor: Chan-bum Park
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Patent number: 6269113Abstract: The present invention relates to a modulated signal generator for testing the working functions of a wideband code division multiple access (CDMA) in a wireless local loop (WLL) system.Type: GrantFiled: September 21, 1999Date of Patent: July 31, 2001Assignee: Samsung Electronics Co., Ltd.Inventor: Chan-bum Park
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Patent number: 6215810Abstract: A radio system is disclosed for supporting a greater number of users than can be supported in a conventional CDMA system that supports multiple users. The radio system is a hybrid system combining elements of conventional spread spectrum techniques. The system may be defined as a parallel hopping hybrid direct sequence (DS)/slow frequency hopping (SFH) code division multiple access (CDMA) system in combination with a DS/CDMA system, frequency hopping (FH)/CDMA system and a multi-carrier system.Type: GrantFiled: January 15, 1999Date of Patent: April 10, 2001Assignee: Samsung Electronics Co., Inc.Inventor: Chan-bum Park