Patents Assigned to Hit Kougyo Kabushiki Kaisha
  • Resin coating pipe and manufacturing method thereof, and fuel tank with resin coating pipe
    Patent number: 6699539
    Abstract: A resin coating pipe wherein a peripheral surface near an end portion of a pipe material (6) is masked through a specified length, and a resin coating layer (7 or 7a) is formed on a rest portion of a surface of the pipe material (6), and the masked portion is made to be an insertion portion (8 or 8a) to be inserted tightly into an inside diameter portion of another fitting member (4), said resin coating layer (7 or 7a) has its end portion being pressurized, and at that portion, a resin connecting portion (17 or 17a) extending along the insertion portion (8 or 8a) and capable of being fitted into an inside diameter portion of another fitting member (4) together with the insertion portion (8 or 8a), is formed.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: March 2, 2004
    Assignee: Hit Kougyo Kabushiki Kaisha
    Inventor: Jun Hirano
  • Resin coating pipe and manufacturing method thereof, and fuel tank with resin coating pipe
    Patent number: 6099908
    Abstract: A resin coating pipe wherein a peripheral surface near an end portion of a pipe material (6) is masked through a specified length, and a resin coating layer (7 or 7a) is formed on a rest portion of a surface of the pipe material (6), and the masked portion is made to be an insertion portion (8 or 8a) to be inserted tightly into an inside diameter portion of another fitting member (4), said resin coating layer (7 or 7a) has its end portion being pressurized, and at that portion, a resin connecting portion (17 or 17a) extending along the insertion portion (8 or 8a) and capable of being fitted into an inside diameter portion of another fitting member (4) together with the insertion portion (8 or 8a), is formed.
    Type: Grant
    Filed: May 15, 1998
    Date of Patent: August 8, 2000
    Assignee: Hit Kougyo Kabushiki Kaisha
    Inventor: Jun Hirano