Patents by Inventor Kyeong-Keun Kim
Kyeong-Keun 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: 11951832Abstract: A driver assistance system for vehicles, which is capable of preventing driver carelessness from causing a vehicle accident when a vehicle stops while traveling, includes a vehicle sensor unit configured to detect driver state data, a driver assistance unit operated to assist a driver when driver carelessness about vehicle driving is detected when a vehicle stops while traveling, and a control unit configured to identify whether the driver is careless based on the driver state data when the vehicle stops while traveling, and to operate the driver assistance unit when the driver carelessness is detected, preventing the vehicle from driving.Type: GrantFiled: October 21, 2022Date of Patent: April 9, 2024Assignees: Hyundai Motor Company, Kia CorporationInventors: Dong Hyeon Woo, Kyeong Keun Kim, Min Kyu Han, Da Som Yang
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Patent number: 11925963Abstract: The inventive concept provides a substrate treating method. The substrate treating method includes supplying a dissolving solution onto a rotating substrate; and supplying, after the supplying a dissolution solution, a treating liquid including a polymer onto the rotating substrate to form a liquid film.Type: GrantFiled: May 27, 2022Date of Patent: March 12, 2024Assignee: SEMES CO., LTD.Inventors: Kyeong Min Lee, Tae-Keun Kim, Min Hee Cho, Won Young Kang
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Publication number: 20230144205Abstract: A driver assistance system for vehicles, which is capable of preventing driver carelessness from causing a vehicle accident when a vehicle stops while traveling, includes a vehicle sensor unit configured to detect driver state data, a driver assistance unit operated to assist a driver when driver carelessness about vehicle driving is detected when a vehicle stops while traveling, and a control unit configured to identify whether the driver is careless based on the driver state data when the vehicle stops while traveling, and to operate the driver assistance unit when the driver carelessness is detected, preventing the vehicle from driving.Type: ApplicationFiled: October 21, 2022Publication date: May 11, 2023Applicants: Hyundai Motor Company, Kia CorporationInventors: Dong Hyeon WOO, Kyeong Keun KIM, Min Kyu HAN, Da Som YANG
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Patent number: 10369986Abstract: The present disclosure relates to a wheel driving device and a wheel driving method for a hybrid construction machine, in which in a construction machine having wheels, particularly, a hybrid wheel loader, by small-capacity low-speed electric motors, small-capacity high-speed electric motors, transmissions each having a clutch, and a control unit which are installed for all of the wheels each, the wheel driving device drives the low-speed electric motor during low-speed driving and drives the high-speed electric motor during high-speed driving by turning on and off the clutch during the low-speed driving and the high-speed driving, thereby reducing manufacturing costs of the wheel driving device, improving fuel economy of the construction machine, reducing abrasion of tires mounted on the wheels, improving durability of the tires, and ensuring traveling stability.Type: GrantFiled: January 16, 2015Date of Patent: August 6, 2019Assignee: DOOSAN INFRACORE CO., LTD.Inventors: Chang Hyun Kim, Eun Soo Jung, Dong Mok Kim, Kyeong Keun Kim, Hyun Jae Seo, Nag In Kim, Lee Hyoung Cho
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Patent number: 9783066Abstract: The present disclosure relates to a power supply device for hybrid construction machinery, and more particularly, to a power supply device for hybrid construction machinery, which is capable of reducing engine loads and facilitating improvement of engine efficiency by excluding a starting motor used in general hybrid construction machinery and an alternator for charging a battery from hybrid construction machinery, such as a hybrid excavator or vehicle, which commonly uses an engine and an electric motor as a power source and includes an electric energy storage device, and a method for the same.Type: GrantFiled: December 23, 2013Date of Patent: October 10, 2017Assignee: Doosan Infracore Co., Ltd.Inventors: Choon Tack Kim, Kyeong Keun Kim
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Publication number: 20160332619Abstract: The present disclosure relates to a wheel driving device and a wheel driving method for a hybrid construction machine, in which in a construction machine having wheels, particularly, a hybrid wheel loader, by small-capacity low-speed electric motors, small-capacity high-speed electric motors, transmissions each having a clutch, and a control unit which are installed for all of the wheels each, the wheel driving device drives the low-speed electric motor during low-speed driving and drives the high-speed electric motor during high-speed driving by turning on and off the clutch during the low-speed driving and the high-speed driving, thereby reducing manufacturing costs of the wheel driving device, improving fuel economy of the construction machine, reducing abrasion of tires mounted on the wheels, improving durability of the tires, and ensuring traveling stability.Type: ApplicationFiled: January 16, 2015Publication date: November 17, 2016Inventors: Chang Hyun KIM, Eun Soo JUNG, Dong Mok KIM, Kyeong Keun KIM, Hyun Jae SEO, Nag In KIM, Lee Hyoung CHO
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Patent number: 9431930Abstract: The present disclosure relates to an emergency stop method for hybrid construction equipment and a brake control device, and more particularly, to an emergency stop method for hybrid construction equipment and a brake control device, which may confirm a failure occurrence location of the hybrid construction equipment, absorb inertial energy of the swing body using several functions for each generated failure location so as to stably stop the swing body in an emergency manner, and when the failure occurs in the hybrid construction equipment, create the brake pattern by using the swing speed or the front information, control a brake of the swing body by controlling a voltage control valve or a hydraulic valve in accordance with the created brake pattern, such that a user may smoothly stop the swing body in accordance with a desired stop speed profile.Type: GrantFiled: December 27, 2012Date of Patent: August 30, 2016Assignee: Doosan Infracore Co., Ltd.Inventors: Sang Il Kim, Kyeong Keun Kim, Byung Il Kang
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Publication number: 20150352961Abstract: The present disclosure relates to a power supply device for hybrid construction machinery, and more particularly, to a power supply device for hybrid construction machinery, which is capable of reducing engine loads and facilitating improvement of engine efficiency by excluding a starting motor used in general hybrid construction machinery and an alternator for charging a battery from hybrid construction machinery, such as a hybrid excavator or vehicle, which commonly uses an engine and an electric motor as a power source and includes an electric energy storage device, and a method for the same.Type: ApplicationFiled: December 23, 2013Publication date: December 10, 2015Inventors: Choon Tack KIM, Kyeong Keun KIM
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Patent number: 9085871Abstract: The present disclosure relates to an apparatus for controlling a swing brake for construction machinery, comprising: a lower travel body; an upper swinging body supported at the lower travel body such that the upper swing body is capable of being swung; a swing motor for driving the upper swing body; a swing brake for braking the swing motor; a swing brake valve which operates to control the braking and releasing operations of the swing brake; a solenoid valve mounted on the swing brake valve to control the operation of the swing brake valve; an operation sensor which applies a first reference signal and a second reference signal in accordance with the motion of a swing operation control unit for controlling the operation of the upper swinging body, wherein said second reference signal is generated when an amount of displacement of the swing operation control unit is larger than the first reference signal; and a control unit, which operates the swing brake valve to release the swing brake when the first referType: GrantFiled: December 23, 2010Date of Patent: July 21, 2015Assignee: Doosan Infracore Co., Ltd.Inventor: Kyeong Keun Kim
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Publication number: 20150042259Abstract: The present disclosure relates to an emergency stop method for hybrid construction equipment and a brake control device, and more particularly, to an emergency stop method for hybrid construction equipment and a brake control device, which may confirm a failure occurrence location of the hybrid construction equipment, absorb inertial energy of the swing body using several functions for each generated failure location so as to stably stop the swing body in an emergency manner, and when the failure occurs in the hybrid construction equipment, create the brake pattern by using the swing speed or the front information, control a brake of the swing body by controlling a voltage control valve or a hydraulic valve in accordance with the created brake pattern, such that a user may smoothly stop the swing body in accordance with a desired stop speed profile.Type: ApplicationFiled: December 27, 2012Publication date: February 12, 2015Inventors: Sang Il Kim, Kyeong Keun Kim, Byung Il Kang
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Patent number: 8862343Abstract: A turning control apparatus for a hybrid construction machine may include an engine, an oil hydraulic pump, an electric energy storage device, an engine assistant motor, a turning motor, a power converter, a battery, an HCU, an SMPS configured to apply electric power to the HCU by being supplied with electric power from the battery, a Key1 configured to switch a VKey_On path which supplies electric power from the battery to the SMPS when a key on signal of a driver is inputted, and a Key2 configured to switch a VKey_Out path which allows electric power to be supplied from the battery to the SMPS when an operation of the Key1 is stopped, in which the Key2 is switched when it is confirmed that the turning motor is being driven in a state in which an operation of the Key1 is stopped.Type: GrantFiled: December 26, 2011Date of Patent: October 14, 2014Assignee: Doosan Infracore Co., Ltd.Inventors: Kyeong Keun Kim, Sang Il Kim
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Publication number: 20130304332Abstract: A turning control apparatus for a hybrid construction machine may include an engine, an oil hydraulic pump, an electric energy storage device, an engine assistant motor, a turning motor, a power converter, a battery, an HCU, an SMPS configured to apply electric power to the HCU by being supplied with electric power from the battery, a Key1 configured to switch a VKey_On path which supplies electric power from the battery to the SMPS when a key on signal of a driver is inputted, and a Key2 configured to switch a VKey_Out path which allows electric power to be supplied from the battery to the SMPS when an operation of the Key1 is stopped, in which the Key2 is switched when it is confirmed that the turning motor is being driven in a state in which an operation of the Key1 is stopped.Type: ApplicationFiled: December 26, 2011Publication date: November 14, 2013Applicant: DOOSAN INFRACORE CO., LTD.Inventors: Kyeong Keun Kim, Sang Il Kim
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Publication number: 20130008155Abstract: The present disclosure relates to an apparatus for controlling a swing brake for construction machinery, comprising: a lower travel body; an upper swinging body supported at the lower travel body such that the upper swing body is capable of being swung; a swing motor for driving the upper swing body; a swing brake for braking the swing motor; a swing brake valve which operates to control the braking and releasing operations of the swing brake; a solenoid valve mounted on the swing brake valve to control the operation of the swing brake valve; an operation sensor which applies a first reference signal and a second reference signal in accordance with the motion of a swing operation control unit for controlling the operation of the upper swinging body, wherein said second reference signal is generated when an amount of displacement of the swing operation control unit is larger than the first reference signal; and a control unit, which operates the swing brake valve to release the swing brake when the first referType: ApplicationFiled: December 23, 2010Publication date: January 10, 2013Applicant: DOOSAN INFRACORE CO., LTD.Inventor: Kyeong Keun Kim
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Publication number: 20070276558Abstract: A navigation system for a position self control robot including a main body having a locomotion unit is provided. The navigation system includes two-dimensional (2D) barcodes, a barcode reader, and a control unit. The 2D barcodes are formed at predetermined intervals on a floor having a predetermined size and respectively have different unique coordinate values. The barcode reader is installed at a predetermined position in a lower portion of the main body to read a 2D barcode on the floor. The control unit is installed at the main body to be electrically connected with the barcode reader, recognizes absolute coordinates within a predetermined area, which are stored in memory, based on a unique coordinate value of the 2D barcode read by the barcode reader, applies the absolute coordinates to a programmed locomotion algorithm, and controls the locomotion unit to move the main body.Type: ApplicationFiled: October 4, 2004Publication date: November 29, 2007Inventor: Kyeong-Keun Kim