Patents by Inventor Tadao SAKAMOTO

Tadao SAKAMOTO 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).

  • Removal device of welding electrode tip
    Patent number: 11203081
    Abstract: A removal device of a welding electrode tip includes a first insertion piece and a second insertion piece that are inserted into a space formed between an end surface of a large diameter portion of a shank and an end surface of the welding electrode tip, each of the first insertion piece and the second insertion piece having a wedge shape having a thickness that increases from a front end to a back portion in an insertion direction, wherein the first insertion piece and the second insertion piece have a thickness by overlap of the first insertion piece and the second insertion piece, and the thickness changes from a thickness smaller than a length of the space to a thickness larger than the length of the space according to an overlap amount in the space.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: December 21, 2021
    Assignee: OBARA CORPORATION
    Inventors: Takehiro Izumi, Tadao Sakamoto
  • REMOVAL DEVICE OF WELDING ELECTRODE TIP
    Publication number: 20190291203
    Abstract: A removal device of a welding electrode tip includes a first insertion piece and a second insertion piece that are inserted into a space formed between an end surface of a large diameter portion of a shank and an end surface of the welding electrode tip, each of the first insertion piece and the second insertion piece having a wedge shape having a thickness that increases from a front end to a back portion in an insertion direction, wherein the first insertion piece and the second insertion piece have a thickness by overlap of the first insertion piece and the second insertion piece, and the thickness changes from a thickness smaller than a length of the space to a thickness larger than the length of the space according to an overlap amount in the space.
    Type: Application
    Filed: March 15, 2019
    Publication date: September 26, 2019
    Inventors: Takehiro IZUMI, Tadao SAKAMOTO