Patents Assigned to Koshuha Foundry Co. Ltd
  • Manhole opening structure
    Patent number: 5732512
    Abstract: A manhole opening structure having a cover traveling rail on which at least one manhole cover can travel between a manhole opening and the ground and rail lifter serving to upwardly and downwardly move the cover traveling rail between a lower position where the manhole cover closes the manhole opening and an upper position where the manhole cover can move between the cover traveling rail and the ground.
    Type: Grant
    Filed: May 30, 1996
    Date of Patent: March 31, 1998
    Assignees: Nippon Koshuha Steel Co., Ltd., Koshuha Foundry Co., Ltd.
    Inventors: Takashi Ueno, Tsutomu Taneichi
  • Flexible type casting gate breaking machine
    Patent number: 5630538
    Abstract: The machine consists of a bearing box which is secured onto the trunk of the machine and is equipped with a pair of axes at both sides and suspends the center of gravity of the machine to rotate same freely, and a U-type supporting device is installed at the axes respectively, and a revolving or swivel joint is installed at the upper end of the above supporting device so as to enable the machine to rotate freely.
    Type: Grant
    Filed: January 3, 1995
    Date of Patent: May 20, 1997
    Assignees: Nippon Koshuha Steel Co., Ltd., Koshuha Foundry Co. Ltd
    Inventors: Akiyoshi Hatakeyama, Isamu Takemoto