Patents by Inventor Hiroshi Imaoka

Hiroshi Imaoka 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).

  • Patent number: 4413498
    Abstract: A rotary transfer press comprising a bed; an upright extending upward from the bed; a crown mounted on the upright and providing a plurality of stations between the crown and the bed in an annular arrangement; a slide upwardly and downwardly movable by being guided by the upright; a feed bar having clamps corresponding in number to the number of the stations and provided around the upright for transferring workpieces from station to station in succession; a slide drive disposed in the crown for moving the slide upward and downward and comprising a main shaft coupled to a main electric motor to rotate at a reduced speed, eccentric rings coupled to the main shaft to rotate at a reduced speed and connecting rods connecting the eccentric rings to the slide; a feed bar lifting drive having a lift cam coupled to one of the eccentric rings and adapted to be actuated by the lift cam for moving the feed bar upward and downward; a feed bar feeding-drive having a feed cam coupled to one of the eccentric rings and adapte
    Type: Grant
    Filed: February 9, 1982
    Date of Patent: November 8, 1983
    Assignee: Hitachi Shipbuilding & Engineering Company Limited
    Inventors: Hiroshi Imaoka, Michio Sakiyama, Masahiro Yamamoto
  • Patent number: 4364257
    Abstract: A rotary transfer press comprising a crown, a bed, a post extending from the bed to the crown, a slide upwardly and downwardly movable as guided along the post, a drive assembly for moving the slide upward and downward, a plurality of working stations disposed in a circular arrangement and each provided with a press die, and a transport assembly for transferring workpieces from each of the stations to the next station in succession. The press can be installed in a small space, and the workpieces are feedable to and dischargeable from the press at any of the stations. The press dies are also replaceable at any station.
    Type: Grant
    Filed: July 10, 1980
    Date of Patent: December 21, 1982
    Assignee: Hitachi Shipbuilding & Engineering Company Limited
    Inventors: Takuro Endo, Yukio Tomita, Yukiro Okamoto, Hiroshi Imaoka, Michio Sakiyama