Patents by Inventor Takashi Katsuta

Takashi Katsuta 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: 10086790
    Abstract: The present invention provides a gas generator in which no positioning device for a cylindrical filter is needed, and a method of assembling the gas generator. The inside of a combustion chamber is filled with a predetermined amount of a molded article of a gas generating agent in a state in which an outside positioning jig is disposed between a cylindrical filter and a circumferential wall portion of a diffuser shell, and an inside positioning jig is disposed between the cylindrical filter and an inner tube. Upon completion of the filling, the two positioning jigs are removed, and the molded article of the gas generating agent is pressed in by an annular underplate. The cylindrical filter is positioned by this pressing-in.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: October 2, 2018
    Assignee: DAICEL CORPORATION
    Inventor: Takashi Katsuta
  • Publication number: 20170028963
    Abstract: The present invention provides a gas generator in which no positioning device for a cylindrical filter is needed, and a method of assembling the gas generator. The inside of a combustion chamber is filled with a predetermined amount of a molded article of a gas generating agent in a state in which an outside positioning jig is disposed between a cylindrical filter and a circumferential wall portion of a diffuser shell, and an inside positioning jig is disposed between the cylindrical filter and an inner tube. Upon completion of the filling, the two positioning jigs are removed, and the molded article of the gas generating agent is pressed in by an annular underplate. The cylindrical filter is positioned by this pressing-in.
    Type: Application
    Filed: April 3, 2015
    Publication date: February 2, 2017
    Applicant: DAICEL CORPORATION
    Inventor: Takashi Katsuta
  • Patent number: 9487182
    Abstract: The present invention provides a gas generator for a restraining device, including: a housing; an ignition device chamber housing and an outer cylindrical wall portion disposed inside the housing; and an annular partition wall portion forming a space near a top plate between the ignition device chamber housing and the outer cylindrical wall portion, a portion defined by the top plate and a bottom plate of the housing, the ignition device chamber housing and the outer cylindrical wall portion is a combustion chamber charged with a gas generating agent; an inner cylindrical wall portion, disposed on the housing bottom plate and spaced from the annular partition wall portion, is provided inside the combustion chamber; the ignition device chamber and the combustion chamber communicate with each other by a first communication portion; the combustion chamber and the space communicate with each other by a gas-flow hole of the annular partition wall portion; the first communication portion and the inner cylindrica
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: November 8, 2016
    Assignee: DAICEL CORPORATION
    Inventor: Takashi Katsuta
  • Publication number: 20160121841
    Abstract: The present invention provides a gas generator for a restraining device, including: a housing; an ignition device chamber housing and an outer cylindrical wall portion disposed inside the housing; and an annular partition wall portion forming a space near a top plate between the ignition device chamber housing and the outer cylindrical wall portion, a portion defined by the top plate and a bottom plate of the housing, the ignition device chamber housing and the outer cylindrical wall portion is a combustion chamber charged with a gas generating agent; an inner cylindrical wall portion, disposed on the housing bottom plate and spaced from the annular partition wall portion, is provided inside the combustion chamber; the ignition device chamber and the combustion chamber communicate with each other by a first communication portion; the combustion chamber and the space communicate with each other by a gas-flow hole of the annular partition wall portion; the first communication portion and the inner cylindrica
    Type: Application
    Filed: June 3, 2014
    Publication date: May 5, 2016
    Applicant: DAICEL CORPORATION
    Inventor: Takashi KATSUTA
  • Publication number: 20050079007
    Abstract: A rotary joint includes a fixed-side member, a rotational-side member and a fluid-tightly sealed portion which is formed in a region between two rotation seals arranged on a relative rotating face between the fixed-side and the rotational-side members. The rotary joint is further provided with a first passage extending from the fixed-side member to the rotational-side member through the fluid-tightly sealed portion of the relative rotating face and a second passage extending from the rotational-side member to the fixed-side member through the fluid-tightly sealed portion of the relative rotation face. The first and second passages are arranged in a 180-degree interval and provided with grooves arranged on the fixed-side member side or the rotational-side member side. The grooves are arranged along the fluid-tightly sealed portion, in a range slightly smaller than 180 degree and not to interfere with each other.
    Type: Application
    Filed: December 13, 2002
    Publication date: April 14, 2005
    Inventor: Takashi Katsuta
  • Patent number: 6842666
    Abstract: A robot system, in which various pieces of information are exchanged between a tool on a wrist of a robot and a control panel by wireless communication, includes plural storage cells for supplying the tool with power, plural chargers for charging the plural storage cells. An automatic change mechanism is provided on each of the plural storage cells and transfers an associated storage cell from the tool to one of the chargers and vice versa. When the storage cell being placed on the tool runs out of power, the storage cell is returned to a vacant charger to be charged, while another storage cell which has been charged is received on the tool.
    Type: Grant
    Filed: March 13, 2003
    Date of Patent: January 11, 2005
    Assignee: Nitta Corporation
    Inventor: Takashi Katsuta
  • Publication number: 20040181311
    Abstract: A robot system, in which various pieces of information are exchanged between a tool on a wrist of a robot and a control panel by wireless communication, includes plural storage cells for supplying the tool with power, plural chargers for charging the plural storage cells. An automatic change mechanism is provided on each of the plural storage cells and transfers an associated storage cell from the tool to one of the chargers and vice versa. When the storage cell being placed on the tool runs out of power, the storage cell is returned to a vacant charger to be charged, while another storage cell which has been charged is received on the tool.
    Type: Application
    Filed: March 13, 2003
    Publication date: September 16, 2004
    Applicant: Nitta Corporation
    Inventor: Takashi Katsuta