Rope Patents (Class 174/102E)
  • Patent number: 4378464
    Abstract: A cable for prospecting, said cable including a core of conductor wires (3) surrounded by insulating material (4) and by armour (7, 8) formed by at least one layer of helically wound steel wires. It includes, from its center to its periphery, inside the armour, an axial monofilament (2) made of a polymer that withstands high temperatures, said monofilament forming the insulation of an inner conductor (1), an outer conductor (5) and a sheath (6) made of a thermoplastic substance that withstands high temperatures, said inner conductor serving a different electrical function than said core of conductor wires.
    Type: Grant
    Filed: February 25, 1981
    Date of Patent: March 29, 1983
    Assignee: Les Cables De Lyon
    Inventors: Jean Marmignon, Luc Lebouc
  • Patent number: 3980808
    Abstract: An electric cable comprising a reinforcing member including a roving of strands of reinforcing elongated fibers and synthetic resin having the weight of 15 to 50 percent as against that of the strands and bonding the strands of the roving. The reinforcing member may be in the form of an armoring member, a tensioning member and an insulation.
    Type: Grant
    Filed: September 19, 1974
    Date of Patent: September 14, 1976
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Koji Kikuchi, Hiroshi Suzuki, Toshio Nomura