Patents by Inventor Hirohito Nakamata

Hirohito Nakamata 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).

  • Patent number: 6455962
    Abstract: A terminal of a motor is provided, in which a connection between a coil and an external circuit can be carried out securely and with a good workability, while saving material resources and enhancing safety relating to environmental pollution. A terminal (23) consists integrally of a magnet wire binding section (20) to connect to a magnet wire (4) of a coil (6), an external connection section (21) to connect to an external circuit and a support base section (22) to press-fit into a terminal block (19) of a bobbin (5) and hold the terminal (23), and the magnet wire (4) is plasma welded for connection through to the external connection section (21) (terminal 23). The connection of the terminal is carried out by welding (plasma welding), thus the end of the magnet wire of a motor (1) is connected without using solder containing lead. As a result, since lead is not used, material resources can be saved and safety relating to the environmental pollution can be enhanced.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: September 24, 2002
    Assignee: Minebea Co., Ltd.
    Inventors: Yuzuru Suzuki, Kunitake Matsushita, Hiroichi Shibata, Naoyuki Harada, Taketoshi Ohyashiki, Sakae Fujitani, Hirohito Nakamata
  • Publication number: 20010026103
    Abstract: A terminal of a motor is provided, in which a connection between a coil and an external circuit can be carried out securely and with a good workability, while saving material resources and enhancing safety relating to environmental pollution. A terminal (23) consists integrally of a magnet wire binding section (20) to connect to a magnet wire (4) of a coil (6), an external connection section (21) to connect to an external circuit and a support base section (22) to press-fit into a terminal block (19) of a bobbin (5) and hold the terminal (23), and the magnet wire (4) is plasma welded for connection through to the external connection section (21) (terminal 23). The connection of the terminal is carried out by welding (plasma welding), thus the end of the magnet wire of a motor (1) is connected without using solder containing lead. As a result, since lead is not used, material resources can be saved and safety relating to the environmental pollution can be enhanced.
    Type: Application
    Filed: March 13, 2001
    Publication date: October 4, 2001
    Applicant: MINEBEA CO., LTD.
    Inventors: Yuzuru Suzuki, Kunitake Matsushita, Hiroichi Shibata, Naoyuki Harada, Taketoshi Ohyashiki, Sakae Fujitani, Hirohito Nakamata
  • Patent number: 6049151
    Abstract: A motor structure having an output shaft with a male screw part mating with a female screw part provided on a rotor rotated by electromagnetic interaction to move the output shaft in an axial direction. The female screw is formed of PPS resin, and the male screw part is formed of metal with a silicon nitride surface layer.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: April 11, 2000
    Assignee: Minebea Co., Ltd
    Inventors: Yuzuru Suzuki, Hirohito Nakamata