Wire rope having an independent wire rope core

{
  "publication_number": "US5946898A",
  "country": "US",
  "kind": "A",
  "title": "Wire rope having an independent wire rope core",
  "abstract": "A wire rope including a core rope having a number of strands each made of a number of wires, and a number of outer strands closed on the core rope. Each strand of the core rope has a contact section where two or more wires of the strand of the core rope come into contact with the closed outer strand. A total of contact section rates Tz is 20 percent or more of a circumference of a circumscribed circle of the core rope: Tz (%)=Ti/C×100, wherein Tl denotes a length of a circumferential component of the contact section, \"C\" denotes a length of the circumference of the circumscribed circle of the core rope. A non-contact section rate Gz is below 20 percent of the circumference of the circumscribed circle of the core rope: Gz (%)={100-(n×Tz)}/n, wherein \"n\" denotes the number of strands.",
  "claims": [
    "1. A wire rope comprising: a core rope including a plurality of core strands, each core strand having a plurality of core strand wires; and a plurality of outer strands twisted together to surround the core rope, each of said outer strands including a plurality of outer strand wires; each core strand of the core rope having such a flattened outside so as to provide a contact section where two or more core strand wires of at least one core strand come into contact with one of said outer strand wires of a juxtaposed outer strand; said core rope having a total number of contact sections corresponding to the number of core strands such that the total of the contact sections Tz is 20 percent or more of the circumference of a circumscribed circle of the core rope, the contact section Tz being defined by the following equation: Tz(%)=Tl/C×100 wherein TI denotes the circumferential component of the contact section and C denotes the circumference of the circumscribed circle of the core rope.",
    "2. A wire rope according to claim 1, wherein the core rope further has a plurality of non-contact sections where no core strand wires of the core strands of said core rope come into contact with the juxtaposed outer strand such that a non-contact section rate Gz is below 20 percent of the circumference of the circumscribed circle of the core rope, the non-contact section rate Gz being defined in Equation (2): Gz(%)={100-(n×Tz)}/n (2) wherein n denotes the number of the core strands.",
    "3. A wire rope comprising: a core rope including a plurality of core strands, each core strand having a plurality of wires; and a plurality of outer strands twisted together to surround the core rope, each of said outer strands including a plurality of outer strand wires; each core strand of each core rope having such a flattened outside as to provide a contact section where two or more core strand wires of of at least one core strand come into contact with one of said outer strand wires of a juxtaposed outer strand; said core rope further having a number of non-contact sections where no core strand wires of the core strands of the core rope come into contact with the outer strand wires of any outer strand such that a non-contact section rate Gz is below 20 percent of the circumference of the circumscribed circle of the core rope, the non-contact section rate Gz being defined by the following equation: Gz(%)={100-(n×Tz)}/n wherein n denotes the number of the core strands."
  ],
  "cpc": [
    "D07B 1/0686",
    "D07B 2201/2055",
    "D07B 5/007"
  ],
  "assignees": [
    "SHINKO WIRE CO LTD"
  ],
  "filing_date": "1997-07-28",
  "publication_date": "1999-09-07",
  "grant_date": "1999-09-07",
  "priority_date": "1996-02-15",
  "application_number": "US-90151297-A",
  "family_id": "27506796",
  "citations": [
    "DE3723720A1",
    "DE3937588A1",
    "EP0064258A1",
    "JPH06101181A",
    "US2128547A",
    "US2181341A",
    "US3729921A",
    "US4244172A",
    "US4311001A",
    "US4454708A"
  ]
}