Rope

Abstract

The instant invention is a rope. This rope includes a blend of filaments including a first filament, and a second filament. The second filament is fluorocarbon polymer filament.

1 . A rope comprising: 
 a blend of filaments comprising; 
 a first filament, and  
 a second filament, said second filament being a fluorocarbon polymer filament.  
   
   
   
       2 . The rope according to  claim 1 , where in said first filament being a high molecular weight polyethylene filament.  
   
   
       3 . The rope according to  claim 2 , wherein said rope further comprising a coating.  
   
   
       4 . The rope according to  claim 3 , wherein said coating being polyurethane.  
   
   
       5 . The rope according to  claim 2 , wherein said blend of filament further comprising a third filament, said third filament being a high strength filament selected from the group consisting of lyotropic polymer filaments and thermotropic polymer filaments.  
   
   
       6 . The rope according to  claim 1 , where in said first filament being a high strength filament selected from the group consisting of lyotropic polymer filaments and thermotropic polymer filaments.  
   
   
       7 . The rope according to  claim 6 , wherein said blend of filament further comprising a third filament, said third filament being a high molecular weight polyethylene filament.  
   
   
       8 . The rope according to claims  1 , wherein said rope having a rope construction selected from the group consisting of a braided rope construction, wire-lay rope construction, and parallel core rope construction.  
   
   
       9 . The rope according to claims  1 , wherein said fluorocarbon polymer filament being a poly(tetrafluoroethylene) filament.  
   
   
       10 . The rope according to  claim 1 , wherein said first, and second filaments being twisted together to form a plurality of twisted yarns, said plurality of twisted yarns being braided together to form a plurality of braided strands, and said plurality of strands being braided together to form said rope.  
   
   
       11 . The rope according to  claim 1 , wherein said first, and second filaments being twisted together to form a plurality of twisted yarns, said plurality of twisted yarns being twisted together to form a plurality of twisted strands, and said plurality of strands being twisted together to form said rope.  
   
   
       12 . The rope according to  claim 1 , wherein said first, and second filaments forming a core, and said core being covered by a cover.  
   
   
       13 . A method for improving fatigue life of a rope on a sheave, a pulley, or a drum comprising the steps of: 
 providing a first filament;    providing a second filament, said second filament being poly(tetrafluoroethylene) filament;    twisting said first, and second filaments together thereby forming a plurality of twisted yarns;    braiding said plurality of twisted yarns together thereby forming a plurality of braided strands;    braiding said plurality of twisted strands together thereby forming a rope having an improved fatigue life on a sheave, a pulley, or a drum.    
   
   
       14 . The method according to  claim 13 , wherein said first filament being a high molecular weight polyethylene filament.  
   
   
       15 . The method according to  claim 14 , wherein said method further including the step of providing a third filament subsequent to the step of providing a second filament, and twisting said first, second, and third filaments together thereby forming a plurality of twisted yarns.  
   
   
       16 . The method according to  claim 15 , wherein said third filament being a high strength filament selected from the group consisting of lyotropic polymer filaments and thermotropic polymer filaments.  
   
   
       17 . The method according to  claim 13 , wherein said first filament being a high strength filament selected from the group consisting of lyotropic polymer filaments and thermotropic polymer filaments.  
   
   
       18 . The method according to  claim 17 , wherein said method further including the step of providing a third filament subsequent to the step of providing a second filament, and twisting said first, second, and third filaments together thereby forming a plurality of twisted yarns.  
   
   
       19 . The method according to  claim 18 , wherein said third filament being a high molecular weight polyethylene filament.  
   
   
       20 . A method for improving fatigue life of a rope on a sheave, a pulley, or a drum comprising the steps of: 
 providing a first filament;    providing a second filament, said second filament being a poly(tetrafluoroethylene) filament;    twisting said first, and second filaments together thereby forming a plurality of twisted yarns;    twisting said plurality of twisted yarns together thereby forming a plurality of twisted strands;    twisting said plurality of twisted strands together thereby forming a rope having an improved fatigue life on a sheave, a pulley, or a drum.    
   
   
       21 . The method according to  claim 20 , wherein said first filament being a high molecular weight polyethylene filament.  
   
   
       22 . The method according to  claim 21 , wherein said method further including the step of providing a third filament subsequent to the step of providing a second filament, and twisting said first, second, and third filaments together thereby forming a plurality of twisted yarns.  
   
   
       23 . The method according to  claim 22 , wherein said third filament being a high strength filament selected from the group consisting of lyotropic polymer filaments and thermotropic polymer filaments.  
   
   
       24 . The method according to  claim 20 , wherein said first filament being a high strength filament selected from the group consisting of lyotropic polymer filaments and thermotropic polymer filaments.  
   
   
       25 . The method according to  claim 24 , wherein said method further including the step of providing a third filament subsequent to the step of providing a second filament, and twisting said first, second, and third filaments together thereby forming a plurality of twisted yarns.  
   
   
       26 . The method according to  claim 25 , wherein said third filament being a high molecular weight polyethylene filament.  
   
   
       27 . A method for improving fatigue life of a rope on a sheave, a pulley, or a drum comprising the steps of: 
 providing a first filament;    providing a second filament, said second filament being a poly(tetrafluoroethylene) filament;    aligning said first, and second filaments in a substantially parallel relation to each other;    compacting said aligned first, and second filaments under tension;    thereby forming a core;    providing a cover;    covering said core with said cover;    thereby forming said rope.    
   
   
       28 . The method according to  claim 27 , wherein said first filament being a high molecular weight polyethylene filament.  
   
   
       29 . The method according to  claim 28 , wherein said method further including the step of providing a third filament subsequent to the step of providing a second filament, aligning said first, second, and third filaments in a substantially parallel relation to each other, and compacting said aligned first, second, and third filaments under tension.  
   
   
       30 . The method according to  claim 29 , wherein said third filament being a high strength filament selected from the group consisting of lyotropic polymer filaments and thermotropic polymer filaments.  
   
   
       31 . The method according to  claim 27 , wherein said first filament being a high strength filament selected from the group consisting of lyotropic polymer filaments and thermotropic polymer filaments.  
   
   
       32 . The method according to  claim 31 , wherein said method further including the step of providing a third filament subsequent to the step of providing a second filament, aligning said first, second, and third filaments in a substantially parallel relation to each other, and compacting said aligned first, second, and third filaments under tension.  
   
   
       33 . The method according to  claim 32 , wherein said third filament being a high molecular weight polyethylene filament.