Patents Represented by Law Firm Heltagott & Karas
  • Water-tight rubber or plastic insulated cable
    Patent number: 5095175
    Abstract: A water-tight rubber or plastic insulated cable includes water-tight compound which is injected into apertures among stranded wires for a conductor. The stranded conductor is compressed to have a solidity factor of 85 to 95% of the conductor. The water-tight compound is injected into the apertures among the stranded wires except for an outermost surface of the conductor. The water-tight compound has a scorch time of more than 20 minutes under a temperature of 130.degree. C. and includes conductive carbon of 50 to 60 weight %.
    Type: Grant
    Filed: April 24, 1991
    Date of Patent: March 10, 1992
    Assignee: Hitachi Cable, Ltd.
    Inventors: Fumio Yoshida, Katsuyuki Isaka, Susumu Koishihara, Tsutomu Tanji