Patents by Inventor Seiichi Hukuhara

Seiichi Hukuhara 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).

  • Scroll manufacturing tool
    Patent number: 4572276
    Abstract: A tool for making a scroll for use in a scroll type fluid displacement apparatus is disclosed. The tool includes first and second molding members and an insertion member. The first molding element has an end plate and two involute wall elements extending from one side surface of the end plate to define two involute grooves, one wedge-shaped and the other rectangular in axial cross-section. A wedge-shaped insertion member is removably disposed in the wedge-shaped involute groove. The second molding member has an indentation in its axial end surface which defines an end plate of a scroll to be formed.
    Type: Grant
    Filed: January 25, 1984
    Date of Patent: February 25, 1986
    Assignee: Sanden Corporation
    Inventor: Seiichi Hukuhara
  • Scroll manufacturing method
    Patent number: 4456051
    Abstract: A method for manufacturing a scroll for use in a scroll type fluid displacement apparatus is disclosed.
    Type: Grant
    Filed: March 2, 1982
    Date of Patent: June 26, 1984
    Assignee: Sanden Corporation
    Inventor: Seiichi Hukuhara