Patents Assigned to RIKEN KOGYO INC.
  • Patent number: 11898693
    Abstract: A rotating movable body for a wire rope includes a rotating portion through the interior of which a wire rope passes, the wire rope being formed by twisting together eight strands, and rotary plates provided on the rotating portion so as to engage with parts of the outer shape of the wire rope, wherein the rotary plates are arranged at a predetermined interval in the extension direction of the wire rope, and in a state where each of the plurality of strands is in contact with one of the rotary plates, the rotating portion moves in the extension direction of the wire rope and rotates so as to follow the twist of the strands.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: February 13, 2024
    Assignee: Riken Kogyo Inc.
    Inventor: Yukihiro Shibao
  • Publication number: 20220213657
    Abstract: A vision guide with a light guiding rod including rope member formed by twisting plural strands; light guiding rod of circumferentially light emitting type being adheringly wound around spiral indentations formed between strands on outer circumference of rope member with core layer made of acrylic-based resin and clad layer made of fluorine-based resin; and light source attached to end portion of light guiding rod, wherein amount of change luminance of light guiding rod in test time over duration of 1000 hours by accelerated weathering tester is contained within range of ±10%; amount of change in each numerical value of chromaticity [x, y] is contained within range of ±0.02; flexural modulus of elasticity of light guiding rod under atmosphere of ?20 degrees Centigrade is contained at range of 0.5-5.0×103 MPa; rope member is formed by twisting strands at twisting angle from 10°-20°; and spiral indentations are uniformly formed with pitch from 100 mm-200 mm.
    Type: Application
    Filed: April 15, 2019
    Publication date: July 7, 2022
    Applicants: FUKUVI CHEMICAL INDUSTRY CO., LTD., RIKEN KOGYO INC.
    Inventors: Yuto USUI, Kodai HATAKEYAMA, Tatsuya YAMAZAKI, Yukihiro SHIBAO