Wire rope having an independent wire rope core
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United States of America Patent
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Sep 7, 1999
Grant Date -
N/A
app pub date -
Jul 28, 1997
filing date -
Feb 15, 1996
priority date (Note) -
Expired
status (Latency Note)
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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.times.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.times.Tz)}/n, wherein 'n' denotes the number of strands.
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