Patents by Inventor Etsutaro Miyata

Etsutaro Miyata 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).

  • Finned tube useful for heat exchangers
    Patent number: 4224984
    Abstract: A length of a tubing is helically wound with a fin made of a heat-radiating strip and which is corrugated to provide a series of transverse crimps. A base is provided by flattening a portion of the crimps with the use of pressure rollers at one edge of the strip when the section of the fin is "L" shaped, or at the middle of the strip when the section of the fin is "U" shaped in order to cling closely to the tubing. The fin is bent at the boundary area between the flattened portion and the crimped portion when the fin is helically wound around the tubing.
    Type: Grant
    Filed: March 19, 1975
    Date of Patent: September 30, 1980
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Etsutaro Miyata, Toshiya Tonomura