Patents by Inventor Chi Hyun Kim
Chi Hyun Kim 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: 10930322Abstract: A regulator having improved voltage control capability may include a comparator, an output voltage generator, a voltage divider, and an output voltage controller. The comparator generates a comparison voltage by comparing a reference voltage with a feedback voltage. The output voltage generator generates an output voltage by using a power supply voltage, based on the comparison voltage. The voltage divider may include a first resistor and a second resistor, which generate the feedback voltage by dividing the output voltage. The output voltage controller adjusts a resistance value of at least one of the first resistor and the second resistor, based on a result of comparing the output voltage with a target voltage.Type: GrantFiled: January 8, 2020Date of Patent: February 23, 2021Assignee: SK hynix Inc.Inventors: Bon Kwang Koo, Chi Hyun Kim, Kyu Tae Park, Tei Cho
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Publication number: 20200365193Abstract: A regulator having improved voltage control capability may include a comparator, an output voltage generator, a voltage divider, and an output voltage controller. The comparator generates a comparison voltage by comparing a reference voltage with a feedback voltage. The output voltage generator generates an output voltage by using a power supply voltage, based on the comparison voltage. The voltage divider may include a first resistor and a second resistor, which generate the feedback voltage by dividing the output voltage. The output voltage controller adjusts a resistance value of at least one of the first resistor and the second resistor, based on a result of comparing the output voltage with a target voltage.Type: ApplicationFiled: January 8, 2020Publication date: November 19, 2020Inventors: Bon Kwang KOO, Chi Hyun KIM, Kyu Tae PARK, Tei CHO
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Patent number: 9601994Abstract: Disclosed herein is an internal voltage generation circuit for generating a pumping voltage. The internal voltage generation circuit may include a pumping unit suitable for generating a pumping voltage by pumping an input voltage and a control unit suitable for stepwise controlling a voltage level of the input voltage based on the breakdown voltage information of the pumping unit.Type: GrantFiled: August 11, 2015Date of Patent: March 21, 2017Assignee: SK Hynix Inc.Inventors: Chi-Hyun Kim, Jae-Ho Lee
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Publication number: 20160233765Abstract: Disclosed herein is an internal voltage generation circuit for generating a pumping voltage. The internal voltage generation circuit may include a pumping unit suitable for generating a pumping voltage by pumping an input voltage and a control unit suitable for stepwise controlling a voltage level of the input voltage based on the breakdown voltage information of the pumping unit.Type: ApplicationFiled: August 11, 2015Publication date: August 11, 2016Inventors: Chi-Hyun KIM, Jae-Ho LEE
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Patent number: 8998733Abstract: A nail-forming apparatus and method to rapidly form nails typically with circular heads is provided. One aspect relates to a sequential wire piece positioner configured for sequentially positioning wire pieces respectively adjacent a plurality of nail head formers. The wire piece positioner may include several carriages related to moving and forming the wire pieces.Type: GrantFiled: April 22, 2011Date of Patent: April 7, 2015Assignee: Zeus Techno IncInventor: Chi Hyun Kim
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Publication number: 20130174629Abstract: Disclosed is a nail feeding device of a nail rolling machine. Unlike a conventional nail rolling machine in which a finger is used to input (feed) objects to be processed, i.e. nails into a rolling zone defined between a ring dies and a segment dies one by one, thus having low productivity, the nail feeding device includes a worm screw to accurately and rapidly input nails into the rolling zone one by one to ensure successful rolling of the nails, which results in a considerable enhancement in productivity and quality.Type: ApplicationFiled: January 10, 2012Publication date: July 11, 2013Inventor: Chi-hyun KIM
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Publication number: 20120270667Abstract: A nail-forming apparatus and method to rapidly form nails typically with circular heads is provided. One aspect relates to a sequential wire piece positioner configured for sequentially positioning wire pieces respectively adjacent a plurality of nail head formers. The wire piece positioner may include several carriages related to moving and forming the wire pieces.Type: ApplicationFiled: April 22, 2011Publication date: October 25, 2012Applicant: ZEUS TECHNO INCInventor: CHI HYUN KIM
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Patent number: 8245635Abstract: Disclosed is an automatic alignment apparatus for rubber bands which automatically aligns a rubber band so as to automate a rubber banding process. The automatic alignment apparatus for rubber bands includes a pair of alignment rods installed in parallel on a plate, screw grooves respectively formed on outer circumferential surfaces of the alignment rods, alignment grooves formed on upper parts of the alignment rods, limit parts formed above the alignment grooves to prevent an aligned rubber band from being separated from the alignment rods, a driving unit and a power transmission unit to rotate the alignment rods, a first sensing unit to sense the rubber band aligned by rotation of the alignment rods, a second sensing unit to sense a consumption state of rubber bands temporarily banded onto the alignment rods, and a controller.Type: GrantFiled: February 17, 2010Date of Patent: August 21, 2012Assignee: Zeus Techno, Inc.Inventors: Chi Hyun Kim, Hee Soo Woo
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Publication number: 20110072986Abstract: Disclosed is an automatic alignment apparatus for rubber bands which automatically aligns a rubber band so as to automate a rubber banding process. The automatic alignment apparatus for rubber bands includes a pair of alignment rods installed in parallel on a plate, screw grooves respectively formed on outer circumferential surfaces of the alignment rods, alignment grooves formed on upper parts of the alignment rods, limit parts formed above the alignment grooves to prevent an aligned rubber band from being separated from the alignment rods, a driving unit and a power transmission unit to rotate the alignment rods, a first sensing unit to sense the rubber band aligned by rotation of the alignment rods, a second sensing unit to sense a consumption state of rubber bands temporarily banded onto the alignment rods, and a controller.Type: ApplicationFiled: February 17, 2010Publication date: March 31, 2011Inventors: CHI HYUN KIM, Hee Soo Woo
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Patent number: 7618222Abstract: A collated strip of fasteners for use in a powered nail gun. Each fastener has a head and an elongated shank extending outwardly therefrom and the plurality of fasteners are disposed aligned one with the other. At least two wire members are secured to the shanks of the aligned plurality of fasteners so as to form a strip of connected fasteners. A first wire member is secured to a first side of each of the shanks and a second wire member is secured to a second and opposite side of each of the shanks. The first and second wire members are spaced a distance apart from each other so that a stable strip of fasteners is formed. A third wire member may also be secured to the first side of the shanks a spaced distance from the first wire member. In this instance, the second wire member is secured to the second and opposite side of the shanks in a position intermediate the first and third wire members.Type: GrantFiled: October 10, 2006Date of Patent: November 17, 2009Inventor: Chi Hyun Kim
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Patent number: 7556138Abstract: An apparatus and method for collating nails wherein round head nails are fed by gravity along an inclined rail to a periphery of a rotating indexing and feed wheel. The nails are deposited into circumferentially spaced grooves formed in the periphery of the feed wheel in a vertical orientation. The feed wheel is inclined at an angle of approximately 45° and upon 180° rotation of the feed wheel the nails assume a horizontal orientation. A conveyor has a plurality of spaced segments attached to a pair of moving belts. Each segment is formed with spaced notches for receiving the nails in a horizontal spaced relationship from the feed wheel and then transporting the horizontally spaced nails to a collator for forming into a continuous strip. Rotation of the feed wheel is synchronized with movement of the conveyor by a motor, a gear train and drive shafts extending between the feed wheel and conveyor.Type: GrantFiled: September 11, 2007Date of Patent: July 7, 2009Inventor: Chi Hyun Kim
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Publication number: 20090069102Abstract: An apparatus and method for collating nails wherein round head nails are fed by gravity along an inclined rail to a periphery of a rotating indexing and feed wheel. The nails are deposited into circumferentially spaced grooves formed in the periphery of the feed wheel in a vertical orientation. The feed wheel is inclined at an angle of approximately 45° and upon 180° rotation of the feed wheel the nails assume a horizontal orientation. A conveyor has a plurality of spaced segments attached to a pair of moving belts. Each segment is formed with spaced notches for receiving the nails in a horizontal spaced relationship from the feed wheel and then transporting the horizontally spaced nails to a collator for forming into a continuous strip. Rotation of the feed wheel is synchronized with movement of the conveyor by a motor, a gear train and drive shafts extending between the feed wheel and conveyor.Type: ApplicationFiled: September 11, 2007Publication date: March 12, 2009Inventor: Chi Hyun Kim
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Publication number: 20070207011Abstract: A collated strip of fasteners for use in a powered nail gun. Each fastener has a head and an elongated shank extending outwardly therefrom and the plurality of fasteners are disposed aligned one with the other. At least two wire members are secured to the shanks of the aligned plurality of fasteners so as to form a strip of connected fasteners. A first wire member is secured to a first side of each of the shanks and a second wire member is secured to a second and opposite side of each of the shanks. The first and second wire members are spaced a distance apart from each other so that a stable strip of fasteners is formed. A third wire member may also be secured to the first side of the shanks a spaced distance from the first wire member. In this instance, the second wire member is secured to the second and opposite side of the shanks in a position intermediate the first and third wire members.Type: ApplicationFiled: October 10, 2006Publication date: September 6, 2007Applicant: Zeus Techno IncInventor: Chi Hyun Kim