Braided Polyester Fiber Core in Steel Wire Rope

Abstract

A wire rope for elevator systems used to hoist, compensate, and govern an elevator car. The wire rope may include six to ten outer steel strands surrounding a central braided polyester core. The wire rope may include six to ten outer steel strands and six to ten inner steel strands surrounding a central braided polyester core. The braided polyester core may include 8-24 single- or double-braided outer strands surrounding a polyester core center that may include parallel fibers, twisted fibers, twisted strands, single-braided strands, or double-braided strands.

The invention claimed is: 
     
         1 . An elevator wire rope comprising:
 a braided polyester core; and   at least six outer strands provided around the braided polyester core.   
     
     
         2 . The elevator wire rope as claimed in  claim 1 , wherein the polyester core has a plurality of single-braided outer strands. 
     
     
         3 . The elevator wire rope as claimed in  claim 1 , wherein the polyester core has a plurality of double-braided outer strands. 
     
     
         4 . The elevator wire rope as claimed in  claim 1 , wherein underlying strands of the braided polyester core have a parallel configuration, twisted configuration, a single-braided configuration, or a double-braided configuration. 
     
     
         5 . The elevator wire rope as claimed in  claim 1 , wherein six to ten outer strands are provided around the braided polyester core. 
     
     
         6 . The elevator wire rope as claimed in  claim 1 , wherein the outer strands are made of steel. 
     
     
         7 . The elevator wire rope as claimed in  claim 1 , wherein the outer strands comprise:
 a central wire;   at least four intermediate wires surrounding the central wire; and   at least four exterior wires surrounding the intermediate wires.   
     
     
         8 . The elevator wire rope as claimed in  claim 1 , wherein the braided polyester core comprises:
 an inner core with a plurality of braided strands; and   an outer core with a plurality of braided strands.   
     
     
         9 . The elevator wire rope as claimed in  claim 8 ,
 wherein the braided strands of the inner core are either single-braided or double-braided, and   wherein the braided strands of the outer core are either single-braided or double-braided.   
     
     
         10 . The elevator wire rope as claimed in  claim 1 , wherein the braided polyester core comprises:
 an inner core with a plurality of twisted strands; and   an outer core with a plurality of braided strands.   
     
     
         11 . The elevator wire rope as claimed in  claim 10 , wherein the braided strands of the outer core are either single-braided or double-braided. 
     
     
         12 . The elevator wire rope as claimed in  claim 1 , wherein the braided polyester core comprises:
 an inner core with a plurality of strands extending parallel to a longitudinal length of the elevator wire rope; and   an outer core with a plurality of braided strands.   
     
     
         13 . The elevator wire rope as claimed in  claim 12 , wherein the braided strands of the outer core are either single-braided or double-braided. 
     
     
         14 . An elevator wire rope comprising:
 a braided polyester core comprising an inner core and an outer core; and   at least six outer strands provided around the braided polyester core, each outer strand comprising:
 a central wire; 
 at least four intermediate wires surrounding the central wire; and 
 at least four exterior wires surrounding the intermediate wires. 
   
     
     
         15 . The elevator wire rope as claimed in  claim 14 ,
 wherein the inner core comprises a plurality of braided strands; and   wherein the outer core comprises a plurality of braided strands.   
     
     
         16 . The elevator wire rope as claimed in  claim 15 ,
 wherein the braided strands of the inner core are either single-braided or double-braided, and   wherein the braided strands of the outer core are either single-braided or double-braided.   
     
     
         17 . The elevator wire rope as claimed in  claim 14 ,
 wherein the inner core comprises a plurality of twisted strands; and   wherein the outer core comprises a plurality of braided strands.   
     
     
         18 . The elevator wire rope as claimed in  claim 17 , wherein the braided strands of the outer core are either single-braided or double-braided. 
     
     
         19 . The elevator wire rope as claimed in  claim 14 ,
 wherein the inner core comprises a plurality of strands extending parallel to a longitudinal length of the elevator wire rope; and   wherein the outer core comprises a plurality of braided strands.   
     
     
         20 . The elevator wire rope as claimed in  claim 19 , wherein the braided strands of the outer core are either single-braided or double-braided.