Patents Assigned to Kyokutoh Company
  • Patent number: 6518537
    Abstract: A welding electrode tip dressing apparatus for grinding a pair of electrode tips mounted on two opposite shanks and for removing the electrode tips when they are spent. The dressing apparatus includes a tip grinding unit and a tip removal unit. The tip grinding unit is provided with a cutter so as to grind the pair of electrode tips. The tip removal unit is provided with a removal mechanism so as to remove the pair of electrode tips from shanks holding the electrode tips. The tip grinding unit and the tip removal unit are arranged side by side in an apparatus body and connected to a drive transmission mechanism connected to and driven by a single drive device.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: February 11, 2003
    Assignee: Kyokutoh Company
    Inventor: Kazuhiro Tezawa
  • Patent number: 6188038
    Abstract: Devices and methods for removing an electrode tip from a shaft of a resistance welder by turning the electrode tip. A holding member has a center of rotation with a first hole to receive the electrode tip and a claw disposed adjacent the first hole and mounted for rotation between an engagement position wherein at least a portion of the claw is positioned within the first hole to secure the electrode tip, and a disengagement position wherein the at least a portion of the claw is displaced from the first hole. A turning plate has a center of rotation coincident with the center of rotation of the holding member and defines a second hole at the center of rotation.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: February 13, 2001
    Assignee: Kyokutoh Company
    Inventor: Tezawa Kazuhiro