Patents by Inventor Dong Jin Kwak

Dong Jin Kwak 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: 20150000576
    Abstract: The present invention relates to an airbag cushion and an airbag system including the same, and particularly to an airbag cushion, including: at least one fabric; and seam parts connecting the fabric, wherein deviation of upper seam thread length per a unit length of the fabric between the first seam part sewed in forward direction and the second seam part sewed in reverse direction in the seam parts is 15% or less, a method of preparing the same, and an airbag system including the same. The airbag cushion of the present invention is superior in working stability and unfolding performance because of the optimized properties of the seam parts, provides superior shape stability and air-tight effect at the same time, and can protect a passenger by minimizing the shock given to the passenger.
    Type: Application
    Filed: August 26, 2014
    Publication date: January 1, 2015
    Inventors: Dong-Jin KWAK, Ki-Jeong Kim, Jae-Hyung Kim, Hee-Jun Kim, Jung-Hoon Youn, Sang-Mok Lee
  • Patent number: 8851516
    Abstract: The present invention relates to an airbag cushion and an airbag system including the same, and particularly to an airbag cushion, including: at least one fabric; and seam parts connecting the fabric, wherein deviation of upper seam thread length per a unit length of the fabric between the first seam part sewed in forward direction and the second seam part sewed in reverse direction in the seam parts is 15% or less, a method of preparing the same, and an airbag system including the same. The airbag cushion of the present invention is superior in working stability and unfolding performance because of the optimized properties of the seam parts, provides superior shape stability and air-tight effect at the same time, and can protect a passenger by minimizing the shock given to the passenger.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: October 7, 2014
    Assignee: Kolon Industries, Inc.
    Inventors: Dong-Jin Kwak, Ki-Jeong Kim, Jae-Hyung Kim, Hee-Jun Kim, Jung-Hoon Youn, Sang-Mok Lee
  • Patent number: 8822358
    Abstract: Disclosed is a fabric for an airbag including a polyester fiber, and particularly to a polyester fabric for an airbag of which toughness is 3.5 to 6.0 kJ/m3 and tearing strength measured according to the ASTM D 2261 TONGUE method is 18 to 30 kgf, wherein the fabric includes polyester fiber of which toughness is 70 to 95 J/m3, a method of preparing the same, and an airbag for a car including the same.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: September 2, 2014
    Assignee: Kolon Industries, Inc.
    Inventors: Jae-Hyung Kim, Dong-Jin Kwak, Jung-Hoon Youn, Sang-Mok Lee, Hee-Jun Kim, Ki-Jeong Kim, Sang-Kil Lee
  • Publication number: 20140021704
    Abstract: The present invention relates to a fabric for an airbag, and a production method thereof. More particularly, the present invention relates to a polyester fabric which includes a high-strength, high-elongation and low-modulus polyester yarn to show excellent toughness and energy absorbing performance after high-humidity heat treatment for a long period of time, a production method thereof, and an airbag for an automobile including the same. The polyester fabric includes a polyester yarn having a fineness of 300 to 700 denier to optimize and maintain the tear strength and seam strength indices in the warp and weft directions within the predetermined range under high temperature and high humidity for a long time, thereby minimizing the impact applied to a passenger and protecting the passenger with safety.
    Type: Application
    Filed: March 30, 2012
    Publication date: January 23, 2014
    Applicant: Kolon Industries, Inc.
    Inventors: Jae-Hyung Kim, Dong-Jin Kwak, Sang-Mok Lee
  • Publication number: 20140021705
    Abstract: The present invention relates to a double-layered fabric including separated two fabric layers which are simultaneously woven by an OPW (one piece woven) method. Specifically, the present invention relates to a gas-inflatable double-layered fabric including a double patterned weave comprised of separated top and bottom fabric layers which are simultaneously woven and have different patterns each other, a preparation method thereof, and an airbag including the same.
    Type: Application
    Filed: March 30, 2012
    Publication date: January 23, 2014
    Applicant: KOLON INDUSTRIES, INC.
    Inventors: Jung-Hoon Youn, Dong-Jin Kwak, Jae-Hyung Kim, Hee-Jun Kim, Ki-Jeong Kim, Sang-Mok Lee
  • Publication number: 20130280444
    Abstract: Disclosed is a side curtain airbag and an airbag system including the same. The side curtain airbag according to the present invention comprises an inflating part having gas inflation, a non-inflating part supporting the inflating part, and an adhered part constituting a boundary between the inflating part and the non-inflating part. The adhered part is coated with a seam sealant and sewed. The initial maximum pressure of the inflating part is 40 kPa or more when injecting a gas therein with an instant pressure of at least 10 bar, and the pressure after 6 seconds is 25 kPa or more. The side curtain airbag may optimize to apply the method of seam sealant coating and sewing on the adhered part constituting a boundary between the inflating part and the non-inflating part. Thus, it can keep the internal gas pressure of the airbag to the extent of protecting passengers safely at rollover.
    Type: Application
    Filed: June 4, 2013
    Publication date: October 24, 2013
    Inventors: Jae-Hyung KIM, Hee-Jun KIM, Jung-Hoon YOUN, Sang-Kil LEE, Dong-Jin KWAK, Ki-Jeong KIM, Sang-Mok LEE
  • Publication number: 20130224468
    Abstract: This disclosure relates to polyester fiber that can be used for an airbag fabric. Particularly, the present invention relates to a polyester fiber that has elongation of 1.65% to 2.5% when tensile strength of 1.0 g/d is applied after heat treatment at 185° C. for 2 minutes, and additionally elongates in the range of elongation from 0.5% to 5% at the range of tensile strength from 8.0 g/d to the maximum strength. Also disclosed is a method for preparing the same, and fabric for an airbag prepared therefrom. The polyester fiber simultaneously has low initial Young's modulus and excellent mechanical properties, and thus, it may provide excellent packing, dimensional stability, and excellent air cut-off effect, and simultaneously, minimize impact applied to a passenger thus safely protecting a passenger.
    Type: Application
    Filed: September 16, 2011
    Publication date: August 29, 2013
    Applicant: KOLON INDUSTRIES, INC.
    Inventors: Jae-Hyung Kim, Dong-Jin Kwak, Ki-Jeong Kim, Hee-Jun Kim, Jung-Hoon Youn, Sang-Mok Lee
  • Publication number: 20130187367
    Abstract: Disclosed is a polyester yarn, wherein a room-temperature strength-elongation index (X0) indicating a ratio (T0/S0) of tensile strength (T0) to tensile elongation (S0) of the polyester yarn, measured at room temperature, and a primary high-humidity strength-elongation index (X1) indicating a ratio (T1/S1) of tensile strength (T1) to tensile elongation (S1) of the polyester yarn, measured after heat-treating the polyester yarn under conditions of a temperature of 85° C. and a relative humidity (RH) of 95±5% for 168 hours, are optimized in a predetermined range.
    Type: Application
    Filed: September 16, 2011
    Publication date: July 25, 2013
    Applicant: KOLON INDUSTRIES, INC.
    Inventors: Jae-Hyung Kim, Dong-Jin Kwak, Ki-Jeong Kim, Hee-Jun Kim, Jung-Hoon Youn, Sang-Mok Lee
  • Publication number: 20130106081
    Abstract: The present invention relates to an airbag fabric comprising a polyester fiber, and more particularly to a polyester fabric, a preparation method for the same, and an airbag for vehicle comprising the same, where the polyester fabric has a tensile strength T1 of at least 95 kgf/inch as measured according to the ASTM D 5034 method, a tear strength T2 of at least 6.5 kgf as measured according to the ASTM D 2261 TONGUE method, and the ratio (T1/T2) of tensile strength T1 to tear strength T2 in the range of 4.0 to 16.4. The airbag fabric of the present invention uses a low-modulus polyester fiber having high strength and high elongation to impart good mechanical properties, such as high toughness and high tear strength, and excellences in packing property, dimensional stability, and air sealing performance, thereby minimizing collision impacts on occupants and protecting occupants with safety.
    Type: Application
    Filed: March 25, 2011
    Publication date: May 2, 2013
    Applicant: KOLON INDUSTRIES, INC.
    Inventors: Jae-Hyung Kim, Dong-Jin Kwak, Ki-Jeong Kim, Hee-Jun Kim, Jung-Hoon Youn, Sang-Mok Lee
  • Publication number: 20130040522
    Abstract: The present invention relates to a polyester fiber applicable to an airbag fabric, and more particularly to a polyester fiber, a preparation method for the polyester fiber, and an airbag fabric prepared from the polyester fiber, where the polyester fiber has an elongation of 0.8 to 2.0% under a tensile strength of 1.0 g/d at the room temperature, and an additional elongation of 1.5 to 5% under a tensile strength of 8.8 g/d to the maximum. The polyester fiber of the present invention which secures low initial Young's modulus and good mechanical properties can be used in an airbag fabric not only to provide excellences in air sealing effect as well as packing property and dimensional stability but also to minimize collision impacts on occupants, thereby protecting the occupants with safety.
    Type: Application
    Filed: March 25, 2011
    Publication date: February 14, 2013
    Applicant: KOLON INDUSTRIES, INC.
    Inventors: Jae-Hyung Kim, Dong-Jin Kwak, Ki-Jeong Kim, Hee-Jun Kim, Jung-Hoon Youn, Sang-Mok Lee
  • Publication number: 20130033027
    Abstract: The present invention relates to an airbag fabric comprising a polyester fiber, and more particularly to a polyester fabric having a thermal resistance constant (X) of 1.0 to 6.5 in the uncoated fabric state, a preparation method for the same, and an airbag for vehicle comprising the same. The airbag fabric of the present invention uses a polyester fiber having low Young's modulus, high strength and high elongation to impart good mechanical properties, such as high strength and high thermal resistance, and good folding property, high dimensional stability, and good air sealing effect as well, thereby minimizing collision impacts on occupants to protect the occupants with safety.
    Type: Application
    Filed: March 25, 2011
    Publication date: February 7, 2013
    Applicant: KOLON INDUSTRIES, INC.
    Inventors: Jae-Hyung Kim, Dong-Jin Kwak, Ki-Jeong Kim, Hee-Jun Kim, Jung-Hoon Youn, Sang-Mok Lee
  • Publication number: 20120280480
    Abstract: The present invention relates to an airbag cushion and an airbag system including the same, and particularly to an airbag cushion, including: at least one fabric; and seam parts connecting the fabric, wherein deviation of upper seam thread length per a unit length of the fabric between the first seam part sewed in forward direction and the second seam part sewed in reverse direction in the seam parts is 15% or less, a method of preparing the same, and an airbag system including the same. The airbag cushion of the present invention is superior in working stability and unfolding performance because of the optimized properties of the seam parts, provides superior shape stability and air-tight effect at the same time, and can protect a passenger by minimizing the shock given to the passenger.
    Type: Application
    Filed: December 30, 2010
    Publication date: November 8, 2012
    Applicant: Kolon Industries, Inc.
    Inventors: Dong-Jin Kwak, Ki-Jeong Kim, Jae-Hyung Kim, Hee-Jun Kim, Jung-Hoon Youn, Sang-Mok Lee
  • Publication number: 20120043742
    Abstract: Disclosed is a fabric for an airbag including a polyester fiber, and particularly to a polyester fabric for an airbag of which toughness is 3.5 to 6.0 kJ/m3 and tearing strength measured according to the ASTM D 2261 TONGUE method is 18 to 30 kgf, wherein the fabric includes polyester fiber of which toughness is 70 to 95 J/m3, a method of preparing the same, and an airbag for a car including the same.
    Type: Application
    Filed: April 22, 2010
    Publication date: February 23, 2012
    Applicant: KOLON INDUSTRIES, INC.
    Inventors: Jae-Hyung Kim, Dong-Jin Kwak, Jung-Hoon Youn, Sang-Mok Lee, Hee-Jun Kim, Ki-Jeong Kim, Sang-Kil Lee
  • Publication number: 20110012331
    Abstract: The present invention relates to a side curtain airbag and an airbag system comprising the same. The side curtain airbag according to the present invention comprises an inflating part having gas inflatability, a non-inflating part supporting the inflating part, and an adhered part constituting a boundary between the inflating part and the non-inflating part. The adhered part is coated with a seam sealant and sewed. The initial maximum pressure of the inflating part is 40 KPa or more when injecting a gas therein with an instant pressure of at least 10 bar, and the pressure after 6 seconds is 25 KPa or more. The side curtain airbag according to the present invention optimizes to apply the method of seam sealant coating and sewing on the adhered part constituting a boundary between the inflating part and the non-inflating part. Thus, it can keep the internal gas pressure of the airbag to the extent of protecting passengers safely at rollover.
    Type: Application
    Filed: March 26, 2009
    Publication date: January 20, 2011
    Applicant: KOLON INDUSTRIES INC.
    Inventors: Jae-Hyung Kim, Hee-Jun Kim, Jung-Hoon Youn, Sang-Kil Lee, Dong-Jin Kwak, Ki-Jeong Kim, Sang-Mok Lee
  • Publication number: 20110002466
    Abstract: A client apparatus includes a wireless network access unit configured to access wireless networks, a packet analysis unit configured to analyze uplink and downlink data packets, a security tunnel processor configured to establish a mobile security tunnel and to maintain the established mobile security tunnel when handover is performed in heterogeneous networks, a wireless network controller configured to control a wireless network accessing process and a connection releasing process of the wireless network access unit, a mobile security tunnel controller configured to perform a MOBIKE protocol and to control a process of establishing and maintaining a mobile security tunnel of the security tunnel processor, and a wireless network connection manager configured to request the mobile security tunnel controller to perform a MOBIKE protocol by managing MOBIKE information and to control handover by setting up and managing a wireless network access policy.
    Type: Application
    Filed: June 22, 2010
    Publication date: January 6, 2011
    Inventors: Dong-Jin Kwak, Woo-Jin Choi, Seong-Choon Lee, Hyung-Keun Ryu
  • Publication number: 20100253047
    Abstract: Disclosed is a inflatable double-layered fabric. The fabric includes an inflating part having gas inflatability, a non-inflating part supporting the inflating part, and a co-woven part constituting a boundary between the inflating part and the non-inflating part, wherein the inflating part is composed of two separated fabric layers, and the weave of the co-woven part is set up at a nk+1 pixel from the width or length end of the double-layered fabric (where, k is 2 or 3, and n is 0 or a positive number) when dividing the double-layered fabric into a plurality of pixels, an airbag including the same, and a method of preparing the airbag.
    Type: Application
    Filed: December 26, 2008
    Publication date: October 7, 2010
    Applicant: KOLON INDUSTRIES, INC.
    Inventors: Jung-Hoon Youn, Dong-Jin Kwak, Hee-Jun Kim, Sang-Kil Lee, Sang-Mok Lee, Jae-Hyung Kim, Ki-Jeong Kim
  • Patent number: 7171816
    Abstract: An air conditioner is disclosed to supply a room with oxygen as well as control temperature and humidity of the air. The present invention includes an outdoor module 10, an indoor module 20, a refrigerant tube 30, and an oxygen generating module. The oxygen generating module includes an oxygen generator 100 installed at the outdoor module 10 so as to generate oxygen by in-taking outdoor air, an oxygen exhauster 200 installed in the indoor module 20 so as to exhaust the oxygen, and an oxygen transport tube 300 transporting the oxygen generated from the oxygen generator 100 to the oxygen exhauster 200.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: February 6, 2007
    Assignee: LG Electronics Inc.
    Inventors: Ho Geun Jang, Dong Jin Kwak, Min Chul Cho
  • Publication number: 20040231344
    Abstract: Disclosed is an air conditioner enabling to supply a room with oxygen as well as control temperature and humidity of air therein. The present invention includes an outdoor module 10, an indoor module 20, a refrigerant tube 30, and an oxygen generating module. The outdoor module 10 includes a condenser 11, an outdoor fan 12, and a compressor 13 so as to compress and condense a refrigerant. The indoor module 20 includes an evaporator 21, an indoor fan 22, an inlet 23, and an outlet 24 so as to cool the air in the room. The refrigerant tube 30 connects the evaporator 21 of the indoor module 20 to the condenser 11 of the outdoor module 10 so as to circulate the refrigerant.
    Type: Application
    Filed: April 29, 2004
    Publication date: November 25, 2004
    Inventors: Ho Geun Jang, Dong Jin Kwak, Min Chul Cho
  • Patent number: 6679930
    Abstract: A device for reducing pressure loss of a cyclone dust collector is disclosed, in which a turbulence flow generated when inlet air into a cyclone body is discharged out through an air outlet passage can be laminated. The device for reducing pressure loss of a cyclone dust collector prevents fine dust as well as relatively weight dust from being contained in discharge air.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: January 20, 2004
    Assignee: LG Electronics Inc.
    Inventors: Hyeok Seong An, Kyeong Seok Lim, Dong Jin Kwak, Bong Seok You, Seong Hwa Lee
  • Patent number: 6572668
    Abstract: A cyclone collector for a vacuum cleaner is disclosed. The cyclone collector comprises a cylindrical cyclone body, an air inlet connected in the middle of an outer circumference of the cyclone body in a tangential direction, dust outlets connected to both ends of the outer circumference of the cyclone body in a tangential direction, a dust box in communication with the dust outlets for collecting dust coming through the dust outlets, a pair of air outlet tubes for discharging an air inside of the cyclone body, and a guide piece provided in the middle of an inside surface of the cyclone body for smoothly dividing and guiding the air drawn through the air inlet to the air outlet tubes, respectively.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: June 3, 2003
    Assignee: LG Electronics Inc.
    Inventors: Hyeok Seong An, Kyeong Seok Lim, Dong Jin Kwak, Bong Seok You, In Cheol Yun