Patents by Inventor Eiji Kurata

Eiji Kurata 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).

  • Terminal structure of high-pressure fuel pipe for direct injection engine
    Patent number: 9664163
    Abstract: Provided is a terminal structure of a high-pressure fuel pipe for a direct injection engine which can prevent stress concentration to a brazed portion between a pipe and a connection part effectively. In the terminal structure of a high-pressure fuel pipe for a direct injection engine where a connection head is brazed to an end of a fuel pipe, the end of the fuel pipe continued to a fuel pipe insertion portion of the connection head is provided with a drawn portion, an outer diameter D1 of the drawn portion to a fuel pipe diameter D satisfies 0.8D?D1?0.9D, and a length L1 of the drawn portion having the outer diameter D1 in a pipe-axial direction from an end of the fuel pipe insertion portion satisfies L1?0.06D.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: May 30, 2017
    Assignee: USUI KOKUSAI SANGYO KAISHA LIMITED
    Inventors: Iichiro Seino, Eiji Kurata
  • Terminal structure of high-pressure fuel pipe for direct injection engine
    Patent number: 9599080
    Abstract: Provided is a terminal structure of a high-pressure fuel pipe for a direct injection engine which can prevent stress concentration to a brazed portion between a pipe and a connection part effectively. In the terminal structure of a high-pressure fuel pipe for a direct injection engine where a connection head is brazed to an end of a fuel pipe, the end of the fuel pipe continued to a fuel pipe insertion portion of the connection head is provided with a drawn portion, an outer diameter D1 of the drawn portion to a fuel pipe diameter D satisfies 0.8D?D1?0.9D, and a length L1 of the drawn portion having the outer diameter D1 in a pipe-axial direction from an end of the fuel pipe insertion portion satisfies L1?0.06D.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: March 21, 2017
    Assignee: USUI KOKUSAI SANGYO KAISHA LIMITED
    Inventors: Iichiro Seino, Eiji Kurata
  • TERMINAL STRUCTURE OF HIGH-PRESSURE FUEL PIPE FOR DIRECT INJECTION ENGINE
    Publication number: 20160123287
    Abstract: Provided is a terminal structure of a high-pressure fuel pipe for a direct injection engine which can prevent stress concentration to a brazed portion between a pipe and a connection part effectively. In the terminal structure of a high-pressure fuel pipe for a direct injection engine where a connection head is brazed to an end of a fuel pipe, the end of the fuel pipe continued to a fuel pipe insertion portion of the connection head is provided with a drawn portion, an outer diameter D1 of the drawn portion to a fuel pipe diameter D satisfies 0.8D?D1?0.9D, and a length L1 of the drawn portion having the outer diameter D1 in a pipe-axial direction from an end of the fuel pipe insertion portion satisfies L1?0.06D.
    Type: Application
    Filed: January 15, 2016
    Publication date: May 5, 2016
    Inventors: Iichiro Seino, Eiji Kurata
  • TERMINAL STRUCTURE OF HIGH-PRESSURE FUEL PIPE FOR DIRECT INJECTION ENGINE
    Publication number: 20150027413
    Abstract: Provided is a terminal structure of a high-pressure fuel pipe for a direct injection engine which can prevent stress concentration to a brazed portion between a pipe and a connection part effectively. In the terminal structure of a high-pressure fuel pipe for a direct injection engine where a connection head is brazed to an end of a fuel pipe, the end of the fuel pipe continued to a fuel pipe insertion portion of the connection head is provided with a drawn portion, an outer diameter D1 of the drawn portion to a fuel pipe diameter D satisfies 0.8D?D1?0.9D, and a length L1 of the drawn portion having the outer diameter D1 in a pipe-axial direction from an end of the fuel pipe insertion portion satisfies L1?0.06D.
    Type: Application
    Filed: February 7, 2013
    Publication date: January 29, 2015
    Inventors: Iichiro Seino, Eiji Kurata
  • High pressure fuel pipe for engines
    Patent number: D716915
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: November 4, 2014
    Assignee: USUI Kokusai Sangyo Kaisha Limited
    Inventors: Iichiro Seino, Eiji Kurata