Patents by Inventor Yoshitaka Nimura

Yoshitaka Nimura 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).

  • Heating and extruding method and device for bulk preform
    Patent number: 5500170
    Abstract: A heating and extruding method for a bulk preform of a fiber reinforced composite material, including a stabbing machine for forming an unpenetrated hole in the bulk preform, a heating machine connected to the stabbing machine for heating the bulk preform by a nitrogen gas, and an extruding machine connected to the heating machine for heating and compressing the bulk preform heated by the heating machine to discharge a predetermined amount of the bulk preform, wherein at least the heating machine to the extruding machine has a sealing structure sealing a nitrogen gas therein. An extruding lip of the extruding machine has a thickness restriction plate and a width restriction plate for respectively adjusting an extrusion thickness and an extrusion width of the melted composite material. Accordingly, oxidation and degradation of resin composing the fiber reinforced composite material can be prevented.
    Type: Grant
    Filed: November 28, 1994
    Date of Patent: March 19, 1996
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Toshiaki Okumura, Takao Ekimoto, Satoshi Shimamoto, Katsumi Ogawa, Masahiro Tomita, Yoshitaka Nimura, Ryosaku Kadowaki
  • Heating and extruding method for bulk preform
    Patent number: 5458838
    Abstract: A heating and extruding method for a bulk preform of a fiber reinforced composite material, including a stabbing machine for forming an unpenetrated hole in the bulk preform, a heating machine connected to the stabbing machine for heating the bulk preform by a nitrogen gas, and an extruding machine connected to the heating machine for heating and compressing the bulk preform heated by the heating machine to discharge a predetermined amount of the bulk preform, wherein at least the heating machine to the extruding machine has a sealing structure sealing a nitrogen gas therein. An extruding lip of the extruding machine has a thickness restriction plate and a width restriction plate for respectively adjusting an extrusion thickness and an extrusion width of the melted composite material. Accordingly, oxidation and degradation of resin composing the fiber reinforced composite material can be prevented.
    Type: Grant
    Filed: March 9, 1993
    Date of Patent: October 17, 1995
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Toshiaki Okumura, Takao Ekimoto, Satoshi Shimamoto, Katsumi Ogawa, Masahiro Tomita, Yoshitaka Nimura, Ryosaku Kadowaki
  • Method and apparatus for detecting molten metal surface level in a mold
    Patent number: 4470446
    Abstract: A method for detecting a molten metal surface level in a casting mold, comprises inserting an electrode in a slag constituting a layer under a flux floating on the surface of the molten metal, detecting a change of electric resistance due to a temperature gradient of the place at which the electrode is inserted, displacing the electrode to bring the detected value to be always constant within a range of from 5 to 50 .OMEGA., and measuring the degree of the displacement of the electrode thereby detecting the surface level of the molten level. An apparatus for carrying out the method is also disclosed.
    Type: Grant
    Filed: July 6, 1981
    Date of Patent: September 11, 1984
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Yoshiyuki Kamikawa, Kazuyoshi Nenbai, Yoshitaka Nimura, Hideki Yokoyama