Patents by Inventor Iwao Nazuka

Iwao Nazuka 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).

  • Magnetic roller conveyor
    Patent number: 4047609
    Abstract: A magnetic roller conveyor wherein a plurality of magnetic rollers are arranged in a row, each of which includes an outer drum and an inner drum disposed in the outer drum and having magnets mounted thereon. The outer drum is rotated while the inner drum is fixed, whereby objects are conveyed by making use of magnetic forces of the magnets. Each roller includes a dampingly magnetized segment mounted past the vertex of the roller, the force of the segment decreasing in the direction of travel to facilitate transfer to the adjacent roller.
    Type: Grant
    Filed: May 12, 1976
    Date of Patent: September 13, 1977
    Assignee: Bunri Kogyo Kabushiki Kaisha
    Inventor: Iwao Nazuka
  • Magnetic substance conveying apparatus
    Patent number: 3952857
    Abstract: In a magnetic substance conveying apparatus, to convey the magnetic substance along the outer periphery of an outer cylinder made of non-magnetic material by the relative rotational movement between the outer cylinder and an inner cylinder inside the outer cylinder and having magnets wound therearound in a spiral fashion, the angle of the spiral of the magnets wound over the inner cylinder gradually increases as the spiral advances toward the end thereof.
    Type: Grant
    Filed: August 12, 1974
    Date of Patent: April 27, 1976
    Assignee: Bunri Kogyo Kabushiki Kaisha
    Inventor: Iwao Nazuka