Patents by Inventor Takahiro KARITA

Takahiro KARITA 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).

  • Method and device for manufacturing metallic-sodium-filled engine valve
    Patent number: 10677110
    Abstract: An umbrella part metallic sodium insertion device for inserting rod-shaped metallic sodium into a hollow part of a hollow valve; a melting device for melting the metallic sodium in the hollow part by inserting a push rod from an opening into the hollow part of the hollow valve, in which the metallic sodium has been inserted by the device, and, while pushing the rod-shaped metallic sodium in the hollow part, heating the umbrella part to a temperature at which the metallic sodium is melted; a stem part cooling device for cooling a stem part of the hollow valve, in which the metallic sodium has been melted by the melting device, to a temperature lower than the temperature at which the metallic sodium is melted; and a stem part metallic sodium insertion device for inserting rod-shaped metallic sodium into the hollow part which has been cooled by the device.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: June 9, 2020
    Assignee: FUJI HOLLOW VALVE INC.
    Inventors: Takahiro Karita, Yasushi Maeda
  • METHOD AND DEVICE FOR MANUFACTURING METALLIC-SODIUM-FILLED ENGINE VALVE
    Publication number: 20180298793
    Abstract: The present invention is provided with: an umbrella part metallic sodium insertion device for inserting rod-shaped metallic sodium into a hollow part of a hollow valve; a melting device for melting the metallic sodium in the hollow part by inserting a push rod from an opening into the hollow part of the hollow valve, in which the metallic sodium has been inserted by the device, and, while pushing the rod-shaped metallic sodium in the hollow part, heating the umbrella part to a temperature at which the metallic sodium is melted; a stem part cooling device for cooling a stem part of the hollow valve, in which the metallic sodium has been melted by the melting device, to a temperature lower than the temperature at which the metallic sodium is melted; and a stem part metallic sodium insertion device for inserting rod-shaped metallic sodium into the hollow part which has been cooled by the device.
    Type: Application
    Filed: February 26, 2016
    Publication date: October 18, 2018
    Applicant: FUJI HOLLOW VALVE INC.
    Inventors: Takahiro KARITA, Yasushi MAEDA