Patents by Inventor Hirosige Kurosaka

Hirosige Kurosaka 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).

  • Full-turn type working machine
    Patent number: 5016721
    Abstract: Described is a full-turn type working machine which generally consists of a lower travelling body and an upper rotary body. The upper rotary body includes a machine room, an operator's cabin, a fuel tank and a counterweight which are laid out within a circle of a predetermined rotational radius R. In addition, a door which is fitted in a side panel of the operator's cabin can be opened largely rearward through an angle greater than 180 degrees and received within the circle of the predetermined rotational angle in an opened state.
    Type: Grant
    Filed: October 27, 1989
    Date of Patent: May 21, 1991
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Nobuyoshi Yamamoto, Yasuhiko Murata, Fumimasa Saeki, Hirosige Kurosaka
  • Full-turn type working machine
    Patent number: 4907667
    Abstract: Described is a full-turn working machine which generally consists of a lower travelling body and an upper rotary body. The upper rotary body includes a machine room, an operator's cabin, a fuel tank and a counterweight which are laid out within a circle of a predetermined rotational radius R. In addition, a door which is fitted in a side panel of the operator's cabin can be opened largely rearward through an angle greater than 180 degrees and received within the circle of the predetermined rotational angle in an opened state.
    Type: Grant
    Filed: October 7, 1988
    Date of Patent: March 13, 1990
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Nobuyoshi Yamamoto, Yasuhiko Murata, Fumimasa Saeki, Hirosige Kurosaka