Patents Assigned to Tanaka Kikizoku Kogyo K.K.
  • Patent number: 7096582
    Abstract: The object is to provide a method of manufacturing a sliding contact which has a high yield of manufacturing sliding contacts and can positively make smooth the tip portion surface of a finger of a brush of a sliding contact. According to the invention, in a method of manufacturing a sliding contact having a metal brush, the tip portion of a finger 12a? of a sliding contact piece 10? is melted and thereafter the tip portion is solidified in a gas, whereby the surface of the tip portion is made smooth. For example, when a sliding contact is manufactured by blanking a metal sheet material, the tip portion of the finger 12a? of the brush 12? of the sliding contact piece 10? which is obtained by blanking is irradiated with a laser beam, whereby the tip portion is heated and melted. Then, a sharp portion and a burr which exist before melting disappear.
    Type: Grant
    Filed: February 7, 2003
    Date of Patent: August 29, 2006
    Assignee: Tanaka Kikizoku Kogyo K.K.
    Inventors: Mitsuyoshi Sayama, Kenitiro Tani, Hirohito Suzuki