Elevator rope
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United States of America Patent
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Mar 26, 2013
Grant Date -
Aug 11, 2011
app pub date -
Dec 9, 2009
filing date -
Dec 17, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
An elevator rope including a rope main body; and a covering resin layer that covers the periphery of the rope main body and comprises a molded product of a composition which composition is produced by mixing a thermoplastic polyurethane elastomer, a thermoplastic resin other than the thermoplastic polyurethane elastomer and an isocyanate compound having two or more isocyanate groups per molecule; a rope main body impregnated with an impregnating solution comprising a hydroxy compound having two or more hydroxy groups per molecule and an isocyanate compound having two or more isocyanate groups per molecule and having a lower viscosity than a melt viscosity of the composition for forming the covering resin layer is used as the rope main body; the elevator rope has a stable friction coefficient that does not depend on temperature or sliding velocity.
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