Patents Assigned to Umebachi Fastener Kabushiki Kaisha
  • Bolt and nut unit coated with lubricant
    Patent number: 4206060
    Abstract: A bolt and nut unit coated with lubricant comprising graphite and/or molybdenum disulfide, an ethylene-vinyl acetate copolymer and a fatty acid or a metallic soap thereof. This lubricant has low temperature sensitivity, and the bolt and nut unit coated therewith can be tightened precisely into position with a constant torque regardless of variations in ambient temperature and humidity.
    Type: Grant
    Filed: October 23, 1978
    Date of Patent: June 3, 1980
    Assignees: Sumitomo Kinzoku Kogyo Kabushiki Kaisha, Umebachi Fastener Kabushiki Kaisha
    Inventors: Hideo Yamamoto, Toshiro Mase, Hidehiro Mukai, Hisao Nakayama