Patents Assigned to Haruo Okazaki
  • Patent number: 4747344
    Abstract: A tubular belt conveyor is supported by a plurality of support frames, some of which comprise a fixed roller and a pressing roller which is biased by compression springs to get close and away with respect to the fixed roller. Between the two rollers, narrow space is formed through which the forward belt is elliptically deformed so that the conveyed materials may be compressed. Particularly, with a steep slope, the materials thus solidified by the rollers can be easily carried by the tubular belt conveyor without slipping down.
    Type: Grant
    Filed: March 20, 1987
    Date of Patent: May 31, 1988
    Assignee: Haruo Okazaki
    Inventors: Kunio Hashimoto, Haruo Okazaki
  • Patent number: 4630726
    Abstract: A tubular belt conveyor having an endless belt shaped substantially to a long tube by applying its elasticity for carrying materials by packing up them therein. The belt conveyor is provided with a belt rolling structure comprising a pressing roller which presses an end portion of the belt to inner downward direction, and the belt conveyor is further provided with three rolling-up rollers which support and press the tubular belt so that it may be smoothly rolled up.
    Type: Grant
    Filed: May 3, 1984
    Date of Patent: December 23, 1986
    Assignees: Haruo Okazaki, Japan Pipe Conveyor Co., Ltd.
    Inventor: Kunio Hashimoto
  • Patent number: 4402395
    Abstract: A method and device for preventing a flexible tubular belt from twisting for use in a tubular belt conveyer are disclosed. A flexible tubular belt is extended between first and second rollers, positioned at a certain distance away from each other, on which the tubular belt is opened, and the belt moving between the two rollers in the tubular form is supported by sets of support rollers which are radially arranged around the peripheries of the belt in contact therewith and are rotatably mounted to support frames. Twisting of the belt is prevented by means which varies an angle of a correction roller extending in a direction substantially perpendicular to the direction of movement of the belt in contact therewith. The correction rollers may be disposed in contact with the bottom and/or sides of the belt.
    Type: Grant
    Filed: June 2, 1981
    Date of Patent: September 6, 1983
    Assignee: Haruo Okazaki
    Inventor: Kunio Hashimoto