Patents by Inventor Satoshi Ohsugi

Satoshi Ohsugi 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).

  • Patent number: 11110885
    Abstract: A gas generator includes an igniter, a cup-shaped member, and a fixing member. The cup-shaped member accommodating an enhancer agent bursts or melts at the time of activation. The fixing member fixing a filter does not burst and melt even at the time of activation. Ra and Ha satisfy a condition of Ra/Ha 1.00 where Ra represents an inner diameter of a sidewall portion of the cup-shaped member and Ha represents a distance between a top wall portion of the cup-shaped member and the igniter. The sidewall portion includes a first region surrounded by a partition wall portion of the fixing member and a second region not surrounded by the partition wall portion. The partition wall portion has an end portion arranged closer to a top plate portion than the igniter. A gas generating agent is arranged to face the top wall portion, the second region, and the partition wall portion.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: September 7, 2021
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Hiroaki Koyama, Shinya Ueda, Satoshi Ohsugi, Makoto Tsuruta, Motohiro Kanaji, Hirotaka Mukunoki
  • Publication number: 20210221324
    Abstract: A gas generator includes a housing constructed by combining and joining a plurality of shell members. One of the plurality of shell members includes a cylindrical portion and a flange portion. The cylindrical portion is provided with a plurality of gas discharge openings including gas discharge openings different in opening area from one another. The flange portion is shaped such that a distance from an axial line of the cylindrical portion to an outer edge of the flange portion is non-uniform. When a perpendicular line is drawn to the axial line from a maximum outer geometry position in the outer edge of the flange portion most distant from the axial line, a gas discharge opening arranged closest to the perpendicular line is a gas discharge opening other than a gas discharge opening largest in opening area among the plurality of gas discharge openings.
    Type: Application
    Filed: April 7, 2021
    Publication date: July 22, 2021
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Shinya UEDA, Satoshi OHSUGI, Hiroaki KOYAMA, Haruki TAKIZAWA
  • Patent number: 11001224
    Abstract: A gas generator includes a housing constructed by combining and joining a plurality of shell members. One of the plurality of shell members includes a cylindrical portion and a flange portion. The cylindrical portion is provided with a plurality of gas discharge openings including gas discharge openings different in opening area from one another. The flange portion is shaped such that a distance from an axial line of the cylindrical portion to an outer edge of the flange portion is non-uniform. When a perpendicular line is drawn to the axial line from a maximum outer geometry position in the outer edge of the flange portion most distant from the axial line, a gas discharge opening arranged closest to the perpendicular line is a gas discharge opening other than a gas discharge opening largest in opening area among the plurality of gas discharge openings.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: May 11, 2021
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Shinya Ueda, Satoshi Ohsugi, Hiroaki Koyama, Haruki Takizawa
  • Patent number: 10759377
    Abstract: A gas generator includes a housing containing an accommodation space, a gas generating agent, an igniter, and a sealing tape. The housing includes a cylindrical circumferential wall portion including plural gas discharge openings and the plural gas discharge openings are closed by the sealing tape. The plural gas discharge openings include gas discharge openings set to be different from one another in opening pressure so as to be opened stepwise with increase in pressure in the accommodation space as a result of burning of the gas generating agent. A condition of T?1.8 [mm] and SA?60 [mm2] is satisfied where T represents a thickness of a portion of the housing and SA represents a total opening area of the plurality of gas discharge openings. At least one of the plural gas discharge openings is in a shape of an elongated hole.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: September 1, 2020
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Satoshi Ohsugi, Shinya Ueda, Haruki Takizawa
  • Patent number: 10730474
    Abstract: A gas generator includes a plurality of gas discharge openings arranged in a circumferential wall portion along a circumferential direction as not overlapping with each other. The plurality of gas discharge openings consist of one group or two or more groups of first gas discharge openings, one group or two or more groups of second discharge openings, and one group or two or more groups of third gas discharge openings. The gas discharge openings included in each of the groups of first to third gas discharge openings are set to be opened at an identical opening pressure. The second gas discharge openings are higher in opening pressure than the first gas discharge openings and lower in opening pressure than the third gas discharge openings. The gas discharge openings included in each group of gas discharge openings are evenly arranged in rotation symmetry at an angle not greater than 120°.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: August 4, 2020
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Haruki Takizawa, Shinya Ueda, Satoshi Ohsugi
  • Publication number: 20200180548
    Abstract: A gas generator includes a housing constructed by combining and joining a plurality of shell members. One of the plurality of shell members includes a cylindrical portion and a flange portion. The cylindrical portion is provided with a plurality of gas discharge openings including gas discharge openings different in opening area from one another. The flange portion is shaped such that a distance from an axial line of the cylindrical portion to an outer edge of the flange portion is non-uniform. When a perpendicular line is drawn to the axial line from a maximum outer geometry position in the outer edge of the flange portion most distant from the axial line, a gas discharge opening arranged closest to the perpendicular line is a gas discharge opening other than a gas discharge opening largest in opening area among the plurality of gas discharge openings.
    Type: Application
    Filed: March 13, 2018
    Publication date: June 11, 2020
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Shinya UEDA, Satoshi OHSUGI, Hiroaki KOYAMA, Haruki TAKIZAWA
  • Publication number: 20200139925
    Abstract: A gas generator includes an igniter, a cup-shaped member, and a fixing member. The cup-shaped member accommodating an enhancer agent bursts or melts at the time of activation. The fixing member fixing a filter does not burst and melt even at the time of activation. Ra and Ha satisfy a condition of Ra/Ha 1.00 where Ra represents an inner diameter of a sidewall portion of the cup-shaped member and Ha represents a distance between a top wall portion of the cup-shaped member and the igniter. The sidewall portion includes a first region surrounded by a partition wall portion of the fixing member and a second region not surrounded by the partition wall portion. The partition wall portion has an end portion arranged closer to a top plate portion than the igniter. A gas generating agent is arranged to face the top wall portion, the second region, and the partition wall portion.
    Type: Application
    Filed: March 13, 2018
    Publication date: May 7, 2020
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Hiroaki KOYAMA, Shinya UEDA, Satoshi OHSUGI, Makoto TSURUTA, Motohiro KANAJI, Hirota ka MUKUNOKI
  • Publication number: 20190023220
    Abstract: A gas generator includes a plurality of gas discharge openings arranged in a circumferential wall portion along a circumferential direction as not overlapping with each other. The plurality of gas discharge openings consist of one group or two or more groups of first gas discharge openings, one group or two or more groups of second discharge openings, and one group or two or more groups of third gas discharge openings. The gas discharge openings included in each of the groups of first to third gas discharge openings are set to be opened at an identical opening pressure. The second gas discharge openings are higher in opening pressure than the first gas discharge openings and lower in opening pressure than the third gas discharge openings. The gas discharge openings included in each group of gas discharge openings are evenly arranged in rotation symmetry at an angle not greater than 120°.
    Type: Application
    Filed: February 23, 2017
    Publication date: January 24, 2019
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Haruki TAKIZAWA, Shinya UEDA, Satoshi OHSUGI
  • Publication number: 20180312132
    Abstract: A gas generator includes a housing containing an accommodation space, a gas generating agent, an igniter, and a sealing tape. The housing includes a cylindrical circumferential wall portion including plural gas discharge openings and the plural gas discharge openings are closed by the sealing tape. The plural gas discharge openings include gas discharge openings set to be different from one another in opening pressure so as to be opened stepwise with increase in pressure in the accommodation space as a result of burning of the gas generating agent. A condition of T>1.8 [mm] and SA?60 [mm2] is satisfied where T represents a thickness of a portion of the housing and SA represents a total opening area of the plurality of gas discharge openings. At least one of the plural gas discharge openings is in a shape of an elongated hole.
    Type: Application
    Filed: October 21, 2016
    Publication date: November 1, 2018
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Satoshi OHSUGI, Shinya UEDA, Haruki TAKIZAWA
  • Patent number: 9656626
    Abstract: A gas generator includes a lower shell as a housing, an igniter including a squib cup and a plug, and a fixing portion formed from a resin molding for fixing the igniter to the lower shell. The squib cup includes a contact portion in contact with the plug and a non-contact portion not in contact with the plug. The fixing portion includes a cover portion secured to an outer circumferential surface of the squib cup, and the cover portion has a lower-side annular cover portion covering a part of the contact portion and an upper-side annular cover portion covering a part of the non-contact portion. A thickness t2 of the upper-side annular cover portion is smaller than a thickness t1 of the lower-side annular cover portion, and the cover portion is formed in a stepped shape having a substantially two-dimensionally annular step-formed surface orthogonal to an axial direction of the squib cup.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: May 23, 2017
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Satoshi Ohsugi, Akinori Matsumoto, Masahiro Yamaguchi
  • Publication number: 20170043742
    Abstract: A gas generator includes a cylindrical partition wall portion including a plurality of gas passage holes through which a gas generated as a result of burning of a gas generating agent passes. Two sealing tapes in a form of a band are contiguously bonded to the partition wall portion such that a direction of extension thereof matches with a circumferential direction of the partition wall portion and each one of a pair of end portions located in each direction of extension is layered on an adjacent sealing tape. The gas passage hole is closed by a layered bonding region which is a portion where adjacent sealing tapes are layered on each other, and the gas passage hole is closed by a non-layered bonding region which is a portion where adjacent sealing tapes are not layered on each other.
    Type: Application
    Filed: April 20, 2015
    Publication date: February 16, 2017
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Shinya UEDA, Yoshitaka IWAI, Satoshi OHSUGI, Masahiro YAMAGUCHI
  • Publication number: 20160052486
    Abstract: A gas generator includes a lower shell as a housing, an igniter including a squib cup and a plug, and a fixing portion formed from a resin molding for fixing the igniter to the lower shell. The squib cup includes a contact portion in contact with the plug and a non-contact portion not in contact with the plug. The fixing portion includes a cover portion secured to an outer circumferential surface of the squib cup, and the cover portion has a lower-side annular cover portion covering a part of the contact portion and an upper-side annular cover portion covering a part of the non-contact portion. A thickness t2 of the upper-side annular cover portion is smaller than a thickness t1 of the lower-side annular cover portion, and the cover portion is formed in a stepped shape having a substantially two-dimensionally annular step-formed surface orthogonal to an axial direction of the squib cup.
    Type: Application
    Filed: March 28, 2014
    Publication date: February 25, 2016
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Satoshi OHSUGI, Akinori MATSUMOTO, Masahiro YAMAGUCHI
  • Patent number: 9199603
    Abstract: A gas generator includes a bottom plate part which is a part of a housing, a cup-shaped member accommodating a transfer charge, a cylindrical filter accommodated in the housing, and an annular first pad member situated in a part on the side of the bottom plate part of a combustion chamber. The cup-shaped member is arranged to project toward inside the combustion chamber, and has a first extension part extending outwardly in the radial direction from a part on the side of an open end along the bottom plate part. The first pad member has a second extension part extending inwardly in the radial direction from an abutting part abutting on the inner circumferential face of the filter along the bottom plate part. By sandwiching the first extension part between the bottom plate part and the second extension part, the cup-shaped member is fixed to the bottom plate part.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: December 1, 2015
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Satoshi Ohsugi, Yusuke Tanaka, Naoki Izaki, Yoshitaka Iwai
  • Publication number: 20150217717
    Abstract: A gas generator includes a bottom plate part which is a part of a housing, a cup-shaped member accommodating a transfer charge, a cylindrical filter accommodated in the housing, and an annular first pad member situated in a part on the side of the bottom plate part of a combustion chamber. The cup-shaped member is arranged to project toward inside the combustion chamber, and has a first extension part extending outwardly in the radial direction from a part on the side of an open end along the bottom plate part. The first pad member has a second extension part extending inwardly in the radial direction from an abutting part abutting on the inner circumferential face of the filter along the bottom plate part. By sandwiching the first extension part between the bottom plate part and the second extension part, the cup-shaped member is fixed to the bottom plate part.
    Type: Application
    Filed: August 29, 2013
    Publication date: August 6, 2015
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Satoshi Ohsugi, Yusuke Tanaka, Naoki Izaki, Yoshitaka Iwai
  • Publication number: 20130291756
    Abstract: A gas generator (1A) includes a housing including a lower shell (10) and an upper shell (20), an igniter (30), a gas generating agent (41), and a filter (50). The housing has a circumferential wall portion (12, 22) in a short, substantially cylindrical shape provided with a gas discharge opening (24) as well as a bottom plate portion (11) and a top plate portion (21) substantially in a disc shape closing axial end portions of the circumferential wall portion (12, 22). The filter (50) is formed from a stack structure made of a hollow, substantially cylindrical member and formed by winding hook metal. The housing further has, in a portion between the circumferential wall portion (22) and the top plate portion (21), an upper curved corner portion (23) which continues to each of these adjacent circumferential wall portion (22) and top plate portion (21) and is formed by abutment of an axial end portion of the filter (50) along a circumferential direction.
    Type: Application
    Filed: January 4, 2012
    Publication date: November 7, 2013
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Satoshi Ohsugi, Hirotaka Mukunoki, Yusuke Tanaka
  • Publication number: 20130276664
    Abstract: A gas generator includes a lower shell, an upper shell, a holding portion, an igniter, and a filter. The lower shell is made of a press-formed product formed by press-working one plate-shaped member made of metal, and includes a protruding cylindrical portion and an opening provided in the protruding cylindrical portion. The holding portion is formed from a resin-molded portion formed by attaching an insulating fluid resin material to a bottom plate portion so as to reach a part of an outer surface from a part of an inner surface of the bottom plate portion of the lower shell through the opening and solidifying the same, and includes an accommodation recess portion in a portion opposed to a top plate portion. The igniter is held by the holding portion while it is inserted in the accommodation recess portion from a side of the top plate portion and fitted therein.
    Type: Application
    Filed: January 6, 2012
    Publication date: October 24, 2013
    Applicants: ADVANCED TECHNOLOGY & SOLUTION CO., LTD., NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Satoshi Ohsugi, Yusuke Tanaka, Hirotaka Mukunoki, Jin Han Kim
  • Publication number: 20130276663
    Abstract: A gas generator (1A) includes a lower shell (10), an upper shell (20), a holding portion (30), an igniter (40), an enhancer cup (46), and a filter (70). The lower shell (10) is made of a press-formed product formed by press-working one plate-shaped member made of metal, and includes a protruding cylindrical portion (13) and an opening (15) provided in the protruding cylindrical portion (13). The holding portion (13) is made of a resin-molded portion formed by attaching an insulating fluid resin material to a bottom plate portion (11) so as to reach a part of an outer surface from a part of an inner surface of the bottom plate portion (11) of the lower shell (10) through the opening (15) and solidifying the same. The enhancer cup (46) is held by the holding portion (30) as an locking protruding portion (46a) provided in the enhancer cup (46) is locked to a locking recess portion (36a) provided in the holding portion (30).
    Type: Application
    Filed: January 6, 2012
    Publication date: October 24, 2013
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Satoshi Ohsugi, Hirotaka Mukunoki, Yusuke Tanaka, Jin Han Kim
  • Publication number: 20130276662
    Abstract: A gas generator (1A) includes a housing including a lower shell (10) and an upper shell (20), an igniter (40), a gas generating agent (61), and a filter (70). The housing includes a bottom plate portion (11) to which the igniter (40) is assembled and a combustion chamber (60) accommodating the gas generating agent (61). The filter (70) is formed from a hollow cylindrical member and disposed in the housing so as to surround the combustion chamber (60) in a radial direction of the housing. The bottom plate portion (11) is provided with a positioning portion (38) formed from a resin-molded portion secured to the bottom plate portion (11), which is formed by adhering a fluid resin material to an inner surface and solidifying the same, and the positioning portion (38) abuts to an inner circumferential surface of an axial end portion of the filter (70) located on a side of the bottom plate portion (11).
    Type: Application
    Filed: January 4, 2012
    Publication date: October 24, 2013
    Applicant: Nippon Kayaku Kabushiki Kaisha
    Inventors: Satoshi Ohsugi, Hirotaka Mukunoki, Yusuke Tanaka