Patents by Inventor Kazumasa Kurita

Kazumasa Kurita 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: 7516701
    Abstract: A gas generator, including an igniter, a gas generating agent ignited by the igniter and generating gas by burning, and a holder and an AC cup forming therein a gas generating agent storage chamber filled with the gas generating agent. A housing formed of the holder and the AC cup is vertically held and fixed by a pair of plate-like members arranged parallel with each other. The gas generator also includes projections forming deformable areas which are deformed in a direction for decreasing the vertical outside dimensions of the gas generator when the housing is fixed by the pair of plate-like members. Thus, when the gas generator is fixed by the pair of plate-like members in the vertical direction, the dispersion of the outside dimensions of the gas generator can be absorbed.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: April 14, 2009
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Kazumasa Kurita, Kenjiro Ikeda, Akihiko Tanaka
  • Patent number: 7377545
    Abstract: A micro gas generator with an automatic ignition function operated before being weakened by heat without impairing the cleanliness of exhaust gas, comprising gas generating agent, a cup body for filling the gas generating agent therein, and a holder formed integrally with squibs and fixedly sealing the squibs in the cup body, wherein an automatic igniting agent layer is put on the inner surface of the cup body.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: May 27, 2008
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Ryoi Kodama, Kazumasa Kurita, Kenjiro Ikeda
  • Patent number: 7284488
    Abstract: A gas generator comprising a first cup case 3 packing therein gas generant 2 to generate gas by the burning of it, a squib 5 having a second cup case E arranged in an inside of the first cup case 3 and containing an ignition charge D, a squib case 7 having a hole 20 and covering the second cup case E, and a holder 6 to hold the squib case 7 and second cut case E by crimping, wherein the holder 6 has holes 13, 14 for allowing passage of electrode pins 11, 12 of the squib 5, one for each of the electrode pins 11, 12.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: October 23, 2007
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Junya Maruyama, Kazumasa Kurita, Akihiko Tanaka, Yoshiyuki Kishino
  • Publication number: 20070186797
    Abstract: A gas generator, including an igniter, a gas generating agent ignited by the igniter and generating gas by burning, and a holder and an AC cup forming therein a gas generating agent storage chamber filled with the gas generating agent. A housing formed of the holder and the AC cup is vertically held and fixed by a pair of plate-like members arranged parallel with each other. The gas generator also includes projections forming deformable areas which are deformed in a direction for decreasing the vertical outside dimensions of the gas generator when the housing is fixed by the pair of plate-like members. Thus, when the gas generator is fixed by the pair of plate-like members in the vertical direction, the dispersion of the outside dimensions of the gas generator can be absorbed.
    Type: Application
    Filed: March 29, 2005
    Publication date: August 16, 2007
    Applicant: NIPPON KAYAKU KABUSHIKE KAISHA
    Inventors: Kazumasa Kurita, Kenjiro Ikeda, Akihiko Tanaka
  • Publication number: 20070163457
    Abstract: Provided is a squib for attaining a normal ignition of gas generants even when an adhesion state of the plug with enhancers is released by vibration or impact and a gas generator having the squib. A squib including a plug 13, two or more electrode pins 14 which pass through the plug 13 and respectively provided with a head 25, a bridge wire 16 connecting spaces between the respective heads 25 on at least two electrode pins 14 among the electrode pins 14, and ignition charge 10 which are ignited by the bridge wire 16 electrified via the electrode pins 14, wherein the plug 13 is a cured composition of thermosetting resins, the electrode pin 14 in which the bridge wire 16 is connected to the head 25 passes through the plug 13, with a predetermined distance A kept between the head 25 and the plug 13, and at least the head 25 and the bridge wire 16 are enclosed by the ignition charge 10, which is a solid, and fixed to the plug 13.
    Type: Application
    Filed: April 15, 2005
    Publication date: July 19, 2007
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Yasushi Matsumura, Junya Maruyama, Akitoshi Hironaka, Kazumasa Kurita, Kenjiro Ikeda
  • Publication number: 20070095236
    Abstract: To provide reduction in size of an igniter device and a gas generator by enhancing strength of a plug under high temperature and thereby reducing thickness of the plug, and to surely prevent electrode pins being burst forth from the plug. An igniter device comprising a resistance heating element, gunpowder to be ignited by heat generation of the resistance heating element, electrode pins connected to the resistance heating element, and a plug for holding the electrode pins, wherein material of the plug is a thermosetting resin. A gas generator comprising a cup packed with gas generant to generate gas by burning, an igniter device arranged in an interior of the cup, and a holder for holding the igniter device and the cup, wherein the holder has insertion holes for allowing the electrode pins to extend through them, respectively.
    Type: Application
    Filed: November 25, 2004
    Publication date: May 3, 2007
    Applicant: Nippon Kayaku Kabushiki Kaisha
    Inventors: Junya Maruyama, Kazumasa Kurita, Masaki Shinmoto, Michal Kilian
  • Publication number: 20060208474
    Abstract: A gas generator comprising a cup member 3 loading therein with gas generant 2 to generate gas by burning, at least two electrode pins 4 to permit passage of electricity, an ignition portion 20 having an ignition mechanism to ignite by an application of electric current, and a holder 5 to fix the electrode pins 4 and the ignition portion 20 in place and engage with the cup member 3 to seal off the gas generant 2, wherein holes 23 for the electrode pins 4 to be extended through are formed in the holder 5 and plastic members 6 are arranged around a part of a radial periphery of the respective electrode pins 4, and wherein a part of or a whole of the plastic members 6 are inserted in the holes 23 and the holder 5 is plastically deformed at a portion thereof at which the plastic members 6 are inserted, whereby the electrode pins 4 and the plastic members 6 are fixed.
    Type: Application
    Filed: December 24, 2003
    Publication date: September 21, 2006
    Inventors: Dairi Kubo, Kazumasa Kurita
  • Publication number: 20060162607
    Abstract: A micro gas generator with an automatic ignition function operated before being weakened by heat without impairing the cleanliness of exhaust gas, comprising gas generating agent, a cup body for filling the gas generating agent therein, and a holder formed integrally with squibs and fixedly sealing the squibs in the cup body, wherein an automatic igniting agent layer is put on the inner surface of the cup body.
    Type: Application
    Filed: August 29, 2003
    Publication date: July 27, 2006
    Inventors: Ryoi Kodama, Kazumasa Kurita, Kenjiro Ikeda
  • Publication number: 20060150855
    Abstract: A gas generator comprising a first cup case 3 packing therein gas generant 2 to generate gas by the burning of it, a squib 5 having a second cup case E arranged in an inside of the first cup case 3 and containing an ignition charge D, a squib case 7 having a hole 20 and covering the second cup case E, and a holder 6 to hold the squib case 7 and second cut case E by crimping, wherein the holder 6 has holes 13, 14 for allowing passage of electrode pins 11, 12 of the squib 5, one for each of the electrode pins 11, 12.
    Type: Application
    Filed: July 18, 2003
    Publication date: July 13, 2006
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Junya Maruyama, Kazumasa Kurita, Akihiko Tanaka, Yoshiyuki Kishino
  • Patent number: D548133
    Type: Grant
    Filed: November 9, 2004
    Date of Patent: August 7, 2007
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Kazumasa Kurita, Kenjiro Ikeda, Akihiko Tanaka