US20120297746A1 - Rope Structures and Methods - Google Patents

Rope Structures and Methods Download PDF

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Publication number
US20120297746A1
US20120297746A1 US13/480,327 US201213480327A US2012297746A1 US 20120297746 A1 US20120297746 A1 US 20120297746A1 US 201213480327 A US201213480327 A US 201213480327A US 2012297746 A1 US2012297746 A1 US 2012297746A1
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Prior art keywords
cover
component
rope structure
strands
fibers
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US13/480,327
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Inventor
Chai-Te Chou
Greg Mozsgai
Lu Liu
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Samson Rope Technologies Inc
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Samson Rope Technologies Inc
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Priority to US13/480,327 priority Critical patent/US20120297746A1/en
Assigned to SYNOVUS BANK reassignment SYNOVUS BANK SECURITY AGREEMENT Assignors: CORMATRIX CARDIOVASCULAR, INC.
Assigned to SAMSON ROPE TECHNOLOGIES reassignment SAMSON ROPE TECHNOLOGIES ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHOU, CHIA-TE, LIU, LU, MOZSGAI, GREG
Publication of US20120297746A1 publication Critical patent/US20120297746A1/en
Assigned to CITIZENS BANK OF PENNSYLVANIA reassignment CITIZENS BANK OF PENNSYLVANIA AMENDED AND RESTATED INTELLECTUAL PROPERTY SECURITY AGREEMENT Assignors: SAMSON ROPE TECHNOLOGIES, INC.
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    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
    • D07B1/025—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics comprising high modulus, or high tenacity, polymer filaments or fibres, e.g. liquid-crystal polymers
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
    • D07B1/04—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics with a core of fibres or filaments arranged parallel to the centre line
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D07B1/0673—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a rope configuration
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D07B1/08—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core the layers of which are formed of profiled interlocking wires, i.e. the strands forming concentric layers
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/14—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable
    • D07B1/145—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising elements for indicating or detecting the rope or cable status
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/16—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
    • D07B1/165—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber inlay
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/10—Rope or cable structures
    • D07B2201/104—Rope or cable structures twisted
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
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    • D07B2201/1092—Parallel strands
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
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    • D07B2201/1096—Rope or cable structures braided
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2015—Strands
    • D07B2201/2016—Strands characterised by their cross-sectional shape
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
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    • D07B2201/2015—Strands
    • D07B2201/2046—Strands comprising fillers
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
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    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2083—Jackets or coverings
    • D07B2201/2087—Jackets or coverings being of the coated type
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
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    • D07B2201/20—Rope or cable components
    • D07B2201/2083—Jackets or coverings
    • D07B2201/2088—Jackets or coverings having multiple layers
    • D—TEXTILES; PAPER
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    • D07B2201/20—Rope or cable components
    • D07B2201/2083—Jackets or coverings
    • D07B2201/2089—Jackets or coverings comprising wrapped structures
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
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    • D07B2201/20—Rope or cable components
    • D07B2201/2083—Jackets or coverings
    • D07B2201/209—Jackets or coverings comprising braided structures
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
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    • D07B2201/20—Rope or cable components
    • D07B2201/2083—Jackets or coverings
    • D07B2201/2092—Jackets or coverings characterised by the materials used
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2095—Auxiliary components, e.g. electric conductors or light guides
    • D07B2201/2096—Light guides
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
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    • D07B2205/201—Polyolefins
    • D07B2205/2014—High performance polyolefins, e.g. Dyneema or Spectra
    • D—TEXTILES; PAPER
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    • D07B2205/2032—Polyacrylics
    • D—TEXTILES; PAPER
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    • D07B2205/2039—Polyesters
    • D07B2205/2042—High performance polyesters, e.g. Vectran
    • D—TEXTILES; PAPER
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    • D07B—ROPES OR CABLES IN GENERAL
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    • D07B2205/2046—Polyamides, e.g. nylons
    • D—TEXTILES; PAPER
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    • D07B2205/2046—Polyamides, e.g. nylons
    • D07B2205/205—Aramides
    • D—TEXTILES; PAPER
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    • D07B2205/2046—Polyamides, e.g. nylons
    • D07B2205/205—Aramides
    • D07B2205/2053—Polybenzimidazol [PBI]
    • D—TEXTILES; PAPER
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    • D07B2205/20—Organic high polymers
    • D07B2205/2096—Poly-p-phenylenebenzo-bisoxazole [PBO]
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
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    • D07B2205/3003—Glass
    • D—TEXTILES; PAPER
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    • D—TEXTILES; PAPER
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    • D07B2205/00—Rope or cable materials
    • D07B2205/30—Inorganic materials
    • D07B2205/3021—Metals

Definitions

  • the present invention relates to rope systems and methods and, in particular, to rope structures and methods employing a core component and a cover component.
  • Rope structures must operate in a wide variety of operating environments. Each particular operating environment has its own operating requirements. The operating requirements of a particular operating environment may be defined in terms of rope characteristics such as shape stability, abrasion and/or cut resistance, surface characteristics, weather resistance, and/or weight per unit length.
  • the present invention may be embodied as a rope structure comprising a core component comprising core fibers combine to form a first rope structure and a first cover component comprising first cover strands comprising first cover fibers within a first matrix material.
  • the first cover strands are arranged around at least a portion of the core component.
  • the present invention may also be embodied as a method of forming a rope structure comprising the steps of providing core fibers, combining the core fibers to form a core component comprising a first rope structure, providing first cover fibers, forming at least one cover first cover strand by combining the first cover fibers with a first matrix material, and arranging the at least one first cover strand to form a cover component by arranging the first cover strands around at least a portion of the core component.
  • FIG. 1A is a schematic side elevation view of a first example rope structure of the present invention
  • FIG. 1B is a schematic cross-sectional view of the first example rope structure
  • FIG. 2 is a side elevation view of the first example rope structure
  • FIG. 3 is a side elevation view of one of the example cover members forming a part of the first example rope structure
  • FIG. 4A is a schematic side elevation view of a second example rope structure of the present invention.
  • FIG. 4B is a schematic cross-sectional view of the second example rope structure
  • FIG. 5A is a schematic side elevation view of a third example rope structure of the present invention.
  • FIG. 5B is a schematic cross-sectional view of the third example rope structure.
  • FIG. 6A is a schematic side elevation view of a fourth example rope structure of the present invention.
  • FIG. 6B is a schematic cross-sectional view of the fourth example rope structure
  • FIG. 7A is a schematic side elevation view of a fifth example rope structure of the present invention.
  • FIG. 7B is a highly schematic cross-sectional view of the fifth example rope structure
  • FIG. 8A is a schematic side elevation view of a sixth example rope structure of the present invention.
  • FIG. 8B is a highly schematic cross-sectional view of the sixth example rope structure
  • FIG. 9A is a highly schematic cross-sectional view of a seventh example rope structure
  • FIG. 9B is a highly schematic cross-sectional view of an eighth example rope structure
  • FIG. 9C is a highly schematic cross-sectional view of a ninth example rope structure.
  • FIG. 9D is a highly schematic cross-sectional view of a tenth example rope structure.
  • the example rope structure 20 comprises a core component 22 and a cover component 24 .
  • the example cover component 24 may be formed along the entire length of the example core component; alternatively, the example cover component may be formed only at one or more particular locations along the length of the example core component 22 .
  • the example core component 22 is or may be formed by any conventional rope structure, including, but not limited to, a braided rope structure, a twisted strand rope structure, a rope structure formed by a bundle of parallel fibers, a rope structure formed by twisted yarns, and/or a bundle of parallel ropes (e.g., core ropes or sub-ropes).
  • An appropriate conventional rope structure for forming the example core component 22 will typically be made of core strands 30 comprising core fibers 32 that are combined into rope sub-components such as yarns. In turn, the yarns are combined into rope sub-components such as rope or core strands 30 as depicted in FIG. 1B .
  • the rope or core strands 30 are combined to form the rope structure that may be used as the example core component 22 .
  • An appropriate rope structure for forming the example core component 22 will typically be made of core fibers 32 formed from one or more materials such as Nylon, polyester, olefin (e.g., polyolefin), acrylic, carbon fiber, aramid fiber (e.g., Kolon, Twaron, Kevlar, Technora, and Nomex), high modulus polyethylene fiber (HMPE) (e.g., Dyneema, Spectra, Tensylon, Ocher), high performance polyolefin fiber (e.g., Tyvek, CoolMax, and Innegra S), PBO fiber (e.g., Zylon), TLCP fiber (e.g., Vectran), PIPD fiber (e.g., M-5), PBI fiber (polybenzimidazole fiber), PEN fiber (or Pentex), Acrylonitrile rubber, glass fiber, metallic fiber, Vinyon, Saran, Spandex, Vinalon, Modal, Sulfar, Lyocell, PLA, Orlon,
  • the example cover component 24 may be formed by a plurality cover strands 40 that are arranged to form a cover or jacket for the example core component 22 .
  • a plurality of the example cover strands 40 are arranged helically around the example core component 22 such that the entire core component is effectively covered along substantially the entire length of the rope structure 20 .
  • the term “covered” in this context may refer to a cover component 24 in which the strands 40 are either tightly adjacent to each such that no gaps exist between adjacent or overlapping strands 40 or to a cover component 24 in which gaps exist between adjacent or overlapping strands 40 .
  • the example cover strands 40 are formed of cover fibers 42 dispersed or arranged in a resin matrix 44 .
  • the example cover fibers 42 are continuous fibers made of one or more materials such as Nylon, polyester, olefin, HMPE, LCD, acrylic, carbon fiber, aramid fiber (e.g., Twaron, Kevlar, Technora, and Nomex), high performance polyethylene fiber (e.g., Dyneema and Spectra), high performance polyolefin fiber (e.g., Tyvek, CoolMax, and Innegra S), PBO fiber (e.g., Zylon), TLCP fiber (e.g., Vectran), PIPD fiber (e.g., M-5), PBI fiber (polybenzimidazole fiber), PEN fiber (or Pentex), Acrylonitrile rubber, glass fiber, metallic fiber, Vinyon, Saran, Spendex, Vinalon, Modal, Sulfar, Lyocell, PLA, Or
  • the individual cover fibers 42 are arranged in bundles, and the resin material is applied to the bundles by wet coating, powder coating, pultrusion, extrusion, or other means such that the resin coats or penetrates the bundles.
  • the resin may be applied in a fluid (e.g., liquid) or fluidized (e.g., powder) form to facilitate penetration of the fiber bundles and then solidified into the matrix 44 by techniques such as solvent removal, solidification from melting, or chemical curing.
  • the example cover stands 40 may be formed in one or more of a number of cross-sectional shapes such as round, dogbone, square or rectangular, A-shape, or trapezoidal.
  • FIGS. 9A-9D A number of example cross-sectional shapes of the cover strands are depicted in FIGS. 9A-9D and will be described in further detail below.
  • the example cover strands 40 and components thereof may also be formed of one or more sizes, shapes, and/or materials.
  • the example cover strands 40 are round in cross-section and equal size in the example depicted in FIG. 1B , but one or more other shapes and sizes may be used in a given example rope structure 20 of the present invention depending on the desired operating characteristics and operating environment of the given rope structure 20 .
  • one or both of the fibers and the resin may be made of different materials for one or more of the cover strands 40 based on the desired operating characteristics and operating environment of the given rope structure 20 .
  • FIG. 2 illustrates that the rope structure 20 defines a length axis A.
  • FIG. 3 illustrates a single one of the example cover strands 40 removed from the rope structure 20 and illustrates that each of the example cover strands 40 is generally helical about a longitudinal axis B.
  • the longitudinal axes B defined by the substantially helical cover strands 40 will be substantially aligned with the length axis A of the overall rope structure 20 .
  • the example cover strands 40 may be twisted, wound, braided, or otherwise arranged in a solidified form or in an un-solidified or un-cured form around the example core component 22 .
  • the strands 40 maintain the helical shape only when the held at two or more locations by clamps, tape, resin, adhesives, or the like. When held in the helical shape, the strands 40 will return (e.g., spring back) to a straight configuration after the holding force is removed.
  • the strands 40 may be allowed to solidify or cure around the core component 22 in the substantially helical shape.
  • the example cover strands 40 may be solidified or cured in the substantially helical shape in advance and then assembled in solidified form to form the rope structure 20 .
  • FIG. 2 also illustrates that the example cover strand 40 defines a pitch associated with repeated angular positions of portions of the substantially helical shape defined by the example cover strand 40 .
  • the pitch is predetermined in relation to the number of cover strands 40 and the thickness of the example cover stands 40 such that the strands 40 form a relatively tight fit (minimal space) between the adjacent cover stands 40 forming the example cover component 24 .
  • One or more of the strands 40 may contain one or more wires or fibers capable of carrying signals (e.g., electrical signals, optical signals) that can be monitored to determine the state of the rope structure 20 (e.g., non-destructive monitoring or testing).
  • signals e.g., electrical signals, optical signals
  • the use of the example cover component 24 in conjunction with the example core component 22 may provide the rope structure 20 with improved shape stability, increased abrasion and cut resistance, better surface characteristics, improved weather resistance, non-destructive testing capabilities, and/or reduced weight per unit length.
  • the rope structure 20 can thus be engineered for increased performance in a number of specific operating environments.
  • the example rope structure 120 comprises a core component 122 , a first cover component 124 , and a second cover component 126 .
  • One or both of the example first and second cover components 124 and 126 may be formed along the entire length of the example core component 122 , and one or both of the example cover components 124 and 126 may be formed only at particular locations along the length of the example core component 122 .
  • the example core component 122 may be formed by a conventional rope structure such as a braided or twisted strand rope, a bundle of parallel fibers or twisted yarns, and/or a bundle of parallel ropes (e.g., core ropes or sub-ropes).
  • An appropriate conventional rope structure for forming the example core component will typically be made of core or rope strands 130 comprising core fibers 132 that are combined into rope sub-components such as yarns. In turn, the yarns are combined into rope sub-components such as the core or rope strands 130 as depicted in FIG. 4B .
  • the core or rope strands 130 are combined to form the rope structure that may be used as the example core component 122 .
  • An appropriate rope structure for forming the example core component 122 will typically be made of core fibers 132 formed from one or more materials such as any of the materials that may be used to form the core fibers 32 described above. These types of core fibers are commonly referred to as synthetic fibers, and a conventional rope structure made from such core fibers is typically referred as a synthetic rope.
  • the example first cover component 124 may be formed by a plurality of first cover strands 140 comprising first cover fibers 142 dispersed or arranged in a first resin matrix 144 .
  • the example second cover component 126 may be formed by a plurality second cover strands 150 comprising second cover fibers 152 dispersed or arranged in a second resin matrix 154 .
  • the first and second cover strands 140 and 150 are arranged to form a cover or jacket for the example core component 122 .
  • a plurality of the example first cover strands 140 and 150 are arranged helically around the example core component 122 such that the entire core component is effectively covered along substantially the entire length of the rope structure 120 . As shown in FIG. 4A , the example first and second cover strands 140 and 150 are wound in opposite directions around the example core component 122 . In other situations, the first and second cover strands 140 and 150 may be wound in the same direction around the example core component 122 .
  • the example cover fibers 142 and 152 are continuous fibers made of one or more materials such as the materials used to form the example cover fibers 42 described above.
  • the resin material is or may be a conventional polymeric resin, such as a thermoplastic or thermosetting resin. Different resin materials may be used to form the matrixes 144 and 154 .
  • the example first cover fibers 142 may be made of a different material than the example second cover fibers 152 , or both of the example cover fibers 142 and 152 may be made of the same material.
  • the combination of resin and fibers used to form the example cover strands 142 and 152 may, in either or both cases, be referred to as a composite structure.
  • the individual cover fibers 142 or 152 are arranged in bundles, and the resin material is applied to the bundles by wet coating, powder coating, pultrusion, extrusion, or other means such that the resin coats or penetrates the bundles.
  • the resin may be applied in a fluid (e.g., liquid) or fluidized (e.g., powder) form to facilitate penetration of the fiber bundles and then solidified into the matrix 144 or 154 by techniques such as solvent removal, solidification from melting, or chemical curing.
  • the example cover strands 140 and 150 may be twisted, wound, braided, or otherwise arranged in a solidified form or in an un-solidified or un-cured form around the example core component 122 .
  • the example cover stands 140 and 150 may be formed in one or more of a number of cross-sectional shapes such as round, dogbone, square or rectangular, A-shape, or trapezoidal.
  • the example cover strands 140 and 150 and components thereof may also be formed of one or more sizes, shapes, and/or materials as generally discussed above.
  • the example first cover strands 140 and second cover strands 150 are round in cross-section as depicted in FIG. 4B , but one or more other shapes and sizes may be used depending on the desired operating characteristics and operating environment of the rope structure 120 .
  • the use of the example first and second cover components 124 and 126 in conjunction with the example core component 122 may provide the second example rope structure 120 with improved shape stability, increased abrasion and cut resistance, better surface characteristics, improved weather resistance, and/or reduced weight per unit length.
  • the second example rope structure 120 can thus be engineered for increased performance in a number of specific operating environments.
  • the example rope structure 220 comprises a core component 222 , a first cover component 224 , and a second cover component 226 .
  • One or both of the example first and second cover components 224 and 226 may be formed along the entire length of the example core component 222 , and one or both of the example cover components 224 and 226 may be formed only at particular locations along the length of the example core component 222 .
  • the example core component 222 may be formed by a conventional rope structure such as a braided or twisted strand rope, a bundle of parallel fibers or twisted yarns, and/or a bundle of parallel ropes (e.g., core ropes or sub-ropes).
  • An appropriate conventional rope structure for forming the example core component will typically be made of rope strands 230 comprising core fibers 232 that are combined into rope sub-components such as yarns. In turn, the yarns are combined into rope sub-components such as the rope strands 230 as depicted in FIG. 5B .
  • the rope strands 230 are combined to form the rope structure that may be used as the example core component 222 .
  • An appropriate rope structure for forming the example core component 222 will typically be made of core fibers 232 formed from one or more materials such as any of the materials that may be used to form the core fibers 32 described above. These types of core fibers are commonly referred to as synthetic fibers, and a conventional rope structure made from such core fibers is typically referred as a synthetic rope.
  • the example first cover component 224 may be formed by a plurality of first cover strands 240 comprising first cover fibers 242 dispersed or arranged in a first resin matrix 244 .
  • the example first cover strands 240 are arranged to form an inner cover or an inner jacket for the example core component 222 .
  • a plurality of the example first cover strands 240 are arranged helically around the example core component 222 such that the entire core component is effectively covered along substantially the entire length of the rope structure 220 . As shown in FIG. 5A , the example first cover strands are wound in a first direction around the example core component 222 .
  • the example cover fibers 242 are continuous fibers made of one or more materials such as the materials used to form the example cover fibers 42 described above.
  • the resin material is or may be a conventional polymeric resin, such as a thermoplastic or thermosetting resin.
  • the combination of resin and fibers used to form the example cover strands 240 may be referred to as a composite structure.
  • the individual cover fibers 242 are arranged in bundles, and the resin material is applied to the bundles by wet coating, powder coating, pultrusion, extrusion, or other means such that the resin coats or penetrates the bundles.
  • the resin may be applied in a fluid (e.g., liquid) or fluidized (e.g., powder) form to facilitate penetration of the fiber bundles and then solidified into the matrix 244 by techniques such as solvent removal, solidification from melting, or chemical curing.
  • the example cover strands 240 may be twisted, wound, braided, or otherwise arranged in a solidified form or in an un-solidified or un-cured form around the example core component 222 .
  • the example cover stands 240 may be formed in one or more of a number of cross-sectional shapes such as round, dogbone, square or rectangular, A-shape, or trapezoidal.
  • the example cover strands 240 and components thereof may also be formed of one or more sizes, shapes, and/or materials as generally discussed above.
  • the example first cover strands 240 are round in cross-section as depicted in FIG. 5B , but one or more other shapes and sizes may be used depending on the desired operating characteristics and operating environment of the rope structure 220 .
  • the example second cover component 226 may be formed by a conventional rope jacket structure such as a braided jacket.
  • An appropriate conventional rope jacket structure for forming the example core component will typically be made of jacket strands 250 comprising jacket fibers 252 that are combined into rope sub-components such as yarns. In turn, the yarns are combined into rope sub-components such as the jacket strands 250 as depicted in FIG. 5B .
  • the jacket strands 250 are combined to form the rope jacket structure that may be used as the example second cover component 226 .
  • An appropriate rope structure for forming the example second cover component 226 will typically be made of jacket fibers 252 formed from one or more materials such as any of the materials that may be used to form the core fibers 32 described above. These types of jacket fibers are commonly referred to as synthetic fibers.
  • first and second cover components 224 and 226 in conjunction with the example core component 222 may provide the rope structure 220 with improved shape stability, increased abrasion and cut resistance, better surface characteristics, improved weather resistance, and/or reduced weight per unit length.
  • the rope structure 220 can thus be engineered for increased performance in a number of specific operating environments.
  • the example rope structure 320 comprises a core component 322 , an intermediate component 324 , and a cover component 326 .
  • One or both of the intermediate component 324 and the example cover component 326 may be formed along the entire length of the example core component 322 , and one or both of the intermediate component 324 and the example cover component 326 may be formed only at particular locations along the length of the example core component 322 .
  • the example core component 322 may be formed by a conventional rope structure such as a braided or twisted strand rope, a bundle of parallel fibers or twisted yarns, and/or a bundle of parallel ropes (e.g., core ropes or sub-ropes).
  • An appropriate conventional rope structure for forming the example core component will typically be made of rope or core strands 330 comprising core fibers 332 that are combined into rope sub-components such as yarns. In turn, the yarns are combined into rope sub-components such as the rope strands 330 as depicted in FIG. 6B .
  • the rope strands 330 are combined to form the rope structure that may be used as the example core component 322 .
  • An appropriate rope structure for forming the example core component 322 will typically be made of core fibers 332 formed from one or more materials such as any of the materials that may be used to form the core fibers 32 described above. These types of core fibers are commonly referred to as synthetic fibers, and a conventional rope structure made from such core fibers is typically referred as a synthetic rope.
  • the intermediate component 324 is formed by a film sheet or strip that is wrapped or wound around the example core component 322 .
  • the example intermediate component 324 is a thin strip of plastic film that is wrapped (with overlapping edges) in a first direction around the example core component 322 before the example cover component 326 is formed over the example core component 322 .
  • the example intermediate component 324 may reduce the friction between the example core component 322 and the example cover component 326 and/or act as a barrier or filter to prevent fluids, particles, or other contaminants from reaching the core component 322 .
  • the example cover component 326 may be formed by a plurality of cover strands 350 comprising cover fibers 352 dispersed or arranged in a resin matrix 354 .
  • the example first cover strands 350 are arranged to form a cover or jacket for the example core component 322 .
  • a plurality of the example cover strands 350 are arranged helically around the intermediate component 324 and the example core component 322 such that the entire core component 322 is effectively covered by the example cover component 326 along substantially the entire length of the rope structure 320 .
  • the example cover strands 350 are wound in a second direction around the example intermediate component 324 .
  • the cover strands 350 may be wound in the same direction as a film strip forming the example intermediate component 324 .
  • the example cover fibers 352 are continuous fibers made of one or more materials such as the materials used to form the example cover fibers 42 described above.
  • the resin material is or may be a conventional polymeric resin, such as a thermoplastic or thermosetting resin.
  • the combination of resin and fibers used to form the example cover strands 350 may be referred to as a composite structure.
  • the individual cover fibers 352 are arranged in bundles, and the resin material is applied to the bundles by wet coating, powder coating, pultrusion, extrusion or other means such that the resin coats or penetrates the bundles.
  • the resin may be applied in a fluid (e.g., liquid) or fluidized (e.g., powder) form to facilitate penetration of the fiber bundles and then solidified into the matrix 354 by techniques such as solvent removal, solidification from melting, or chemical curing.
  • the example cover strands 350 may be twisted, wound, braided, or otherwise arranged in a solidified form or in an un-solidified or un-cured form around the example core component 322
  • the example cover stands 350 may be formed in one or more of a number of cross-sectional shapes such as round, dogbone, square or rectangular, A-shape, or trapezoidal.
  • the example cover strands 350 and components thereof may also be formed of one or more sizes, shapes, and/or materials as generally discussed above.
  • the example first cover strands 350 are round in cross-section as depicted in FIG. 6B , but one or more other shapes and sizes may be used depending on the desired operating characteristics and operating environment of the rope structure 320 .
  • the use of the intermediate component 324 and/or cover component 326 in conjunction with the example core component 322 may provide the rope structure 320 with improved shape stability, increased abrasion and cut resistance, better surface characteristics, improved weather resistance, and/or reduced weight per unit length.
  • the rope structure 320 can thus be engineered for increased performance in a number of specific operating environments.
  • the example rope structure 420 comprises a core component 422 , an intermediate component 424 , and a cover component 426 .
  • One or both of the intermediate component 424 and the example cover component 426 may be formed along the entire length of the example core component 422 , and one or both of the intermediate component 424 and the example cover component 426 may be formed only at particular locations along the length of the example core component 422 .
  • the example core component 422 may be formed by a conventional rope structure such as a braided or twisted strand rope, a bundle of parallel fibers or twisted yarns, and/or a bundle of parallel ropes (e.g., core ropes or sub-ropes).
  • An appropriate conventional rope structure for forming the example core component will typically be made of rope or core strands 430 comprising core fibers 432 that are combined into rope sub-components such as yarns.
  • the yarns are combined into rope sub-components such as the example core or rope strands 430 as depicted in FIG. 7B .
  • the example core or rope strands 430 are combined to form the rope structure that may be used as the example core component 422 .
  • An appropriate rope structure for forming the example core component 422 will typically be made of core fibers 432 formed from one or more materials such as any of the materials that may be used to form the core fibers 32 described above. These types of core fibers are commonly referred to as synthetic fibers, and a conventional rope structure made from such core fibers is typically referred as a synthetic rope.
  • the intermediate component 424 is formed by a coating material on the example core fibers 432 forming the example core component 422 .
  • the example intermediate component 424 is formed by one or more layers of coating material that is sprayed onto or soaked into the example core component 422 in liquid form and allowed to dry or set before or after the example cover component 426 is formed over the example core component 422 . If the coating material is sprayed onto the example core component 422 , the intermediate component 424 will typically take the form of a thin layer that covers most if not all of the outer surfaces of the example core strands 430 .
  • the coating material may fill at least a part of the volume defined by the interstitial spaces between the fibers 432 forming the example core strands 430 .
  • a vacuum applied to these interstitial spaces may encourage flow of liquid coating material into the interstitial spaces.
  • the example intermediate component 424 may reduce the friction between the example core component 422 and the example cover component 426 .
  • the example cover component 426 may be formed by a plurality of cover strands 450 comprising cover fibers 452 dispersed or arranged in a resin matrix 454 .
  • the example first cover strands 450 are arranged to form a cover or jacket for the example core component 422 .
  • a plurality of the example cover strands 450 are arranged helically around the intermediate component 424 and the example core component 422 such that the entire core component 422 is effectively covered by the example cover component 426 along substantially the entire length of the rope structure 420 .
  • the example cover strands 450 are wound in a second direction around the example core component 422 .
  • the example cover fibers 452 are continuous fibers made of one or more materials such as the materials used to form the example cover fibers 42 described above.
  • the resin material is or may be a conventional polymeric resin, such as a thermoplastic or thermosetting resin.
  • the combination of resin and fibers used to form the example cover strands 250 may be referred to as a composite structure.
  • the individual cover fibers 452 are arranged in bundles, and the resin material is applied to the bundles by wet coating, powder coating, pultrusion, extrusion, or other means such that the resin coats or penetrates the bundles.
  • the resin may be applied in a fluid (e.g., liquid) or fluidized (e.g., powder) form to facilitate penetration of the fiber bundles and then solidified into the matrix 454 by techniques such as solvent removal, solidification from melting, or chemical curing.
  • the example cover strands 450 may be twisted, wound, braided, or otherwise arranged in a solidified form or in an un-solidified or un-cured form around the example core component 422 .
  • the example cover stands 450 may be formed in one or more of a number of cross-sectional shapes such as round, dogbone, square or rectangular, A-shape, or trapezoidal.
  • the example cover strands 450 may also be formed of one or more sizes, shapes, and/or materials as generally discussed above.
  • the example first cover strands 450 are round in cross-section as depicted in FIG. 7B , but one or more other shapes and sizes may be used depending on the desired operating characteristics and operating environment of the rope structure 420 .
  • the use of the intermediate component 424 and/or cover component 426 in conjunction with the example core component 422 may provide the rope structure 420 with improved shape stability, increased abrasion and cut resistance, better surface characteristics, improved weather resistance, and/or reduced weight per unit length.
  • the rope structure 420 can thus be engineered for increased performance in a number of specific operating environments.
  • the example rope structure 520 comprises a core component 522 , an intermediate component 524 , a cover component 526 , and an outer component 528 .
  • One or more of the intermediate component 524 , the example cover component 526 , and the outer component 528 may be formed along the entire length of the example core component 522 .
  • one or more of the intermediate component 524 , the example cover component 526 , and the outer component 528 may be formed only at particular locations along the length of the example core component 522 .
  • the example core component 522 may be formed by a conventional rope structure such as a braided or twisted strand rope, a bundle of parallel fibers or twisted yarns, and/or a bundle of parallel ropes (e.g., core ropes or sub-ropes).
  • An appropriate conventional rope structure for forming the example core component will typically be made of rope or core strands 530 comprising core fibers 532 that are combined into rope sub-components such as yarns. In turn, the yarns are combined into rope sub-components such as the rope strands 530 as depicted in FIG. 8B .
  • the rope strands 530 are combined to form the rope structure that may be used as the example core component 522 .
  • An appropriate rope structure for forming the example core component 522 will typically be made of core fibers 532 formed from one or more materials such as any of the materials that may be used to form the core fibers 32 described above. These types of core fibers are commonly referred to as synthetic fibers, and a conventional rope structure made from such core fibers is typically referred as a synthetic rope.
  • the intermediate component 524 is formed by a coating material on or film material wrapped or wound around the example core fibers 532 forming the example core component 522 .
  • the example intermediate component 524 is formed by a strip of film material wrapped around the example core component 522 .
  • the example intermediate component 524 may reduce the friction between the example core component 522 and the example cover component 526 .
  • the example cover component 526 may be formed by a plurality of cover strands 550 comprising cover fibers 552 dispersed or arranged in a resin matrix 554 .
  • the example first cover strands 550 are arranged to form a cover or jacket for the example core component 522 .
  • a plurality of the example cover strands 550 are arranged helically around the intermediate component 524 and the example core component 522 such that the entire core component 522 is effectively covered by the example cover component 526 along substantially the entire length of the rope structure 520 .
  • the example cover strands 550 are wound in a second direction around the example core component 522 .
  • the example cover fibers 552 are continuous fibers made of one or more materials such as the materials used to form the example cover fibers 42 described above.
  • the resin material is or may be a conventional polymeric resin, such as a thermoplastic or thermosetting resin.
  • the combination of resin and fibers used to form the example cover strands 550 may be referred to as a composite structure.
  • the individual cover fibers 552 are arranged in bundles, and the resin material is applied to the bundles by wet coating, powder coating, pultrusion, extrusion, or other means such that the resin coats or penetrates the bundles.
  • the resin may be applied in a fluid (e.g., liquid) or fluidized (e.g., powder) form to facilitate penetration of the fiber bundles and then solidified into the matrix 554 by techniques such as solvent removal, solidification from melting, or chemical curing.
  • the example cover strands 550 may be twisted, wound, braided, or otherwise arranged in a solidified form or in an un-solidified or un-cured form around the example core component 522 .
  • the example cover stands 550 may be formed in one or more of a number of cross-sectional shapes such as round, dogbone, square or rectangular, A-shape, or trapezoidal.
  • the example cover strands 550 may also be formed of one or more sizes, shapes, and/or materials as generally discussed above.
  • the example first cover strands 550 are round in cross-section as depicted in FIG. 8B , but one or more other shapes and sizes may be used depending on the desired operating characteristics and operating environment of the rope structure 520 .
  • the outer component 528 is formed by a coating material on or film material wrapped or wound around the example cover strands 550 or cover fibers 552 forming the example cover component 526 .
  • the example outer component 528 is formed by a strip of film material wrapped around the example cover component 526 .
  • the example outer component 528 may be formed such that the whole rope 520 can be protected, and its surface can be filled/shaped to define a smooth outside.
  • the use of the intermediate component 524 , cover component 526 , and/or outer component 528 in conjunction with the example core component 522 may provide the rope structure 520 with improved shape stability, increased abrasion and cut resistance, better surface characteristics, improved weather resistance, and/or reduced weight per unit length.
  • the rope structure 520 can thus be engineered for increased performance in a number of specific operating environments.
  • FIGS. 9A-9D of the drawing several examples of cover strand configurations will be described.
  • FIG. 9A depicts a rope structure 620 comprising a core component 622 and a cover component 624 .
  • the cover component 624 comprises a set of first cover strands 626 and a set of second cover strands 628 .
  • the cover strands may be composite structures like any of the cover strands described above.
  • one of the second cover strands 628 is arranged between each of the first cover strands 628 , and the adjacent surfaces of the first and second cover strands 626 and 628 are complementary.
  • the cross-sectional area of the example first cover strands 626 is round, while the cross-sectional area of the second cover strands 628 defines inner and outer surfaces 628 a and 628 b and side surfaces 628 c and 628 d .
  • the example inner and outer surfaces 628 a and 628 b are flat, while the example side surfaces 628 c and 628 d are inwardly curved (concave).
  • Outwardly curved outer surfaces 626 a of the round first cover strands 626 substantial conform to or are complementary with the inwardly curved side surfaces 628 c and 628 d of the second cover strands 628 .
  • the outer surfaces 626 a and side surfaces 628 c and 628 d need not be curved or circular but should be complementary.
  • the inner and outer surfaces 628 a and 628 b need not be flat.
  • the inner surfaces 628 a may be shaped or contoured for better engagement with the core component 622
  • the outer surfaces 628 b may be shaped, contoured, or textured to provide enhanced surface characteristics to the overall rope structure 620 .
  • FIG. 9B depicts a rope structure 630 comprising a core component 632 and a cover component 634 .
  • the cover component 634 comprises a set of first cover strands 636 and a set of second cover strands 638 .
  • the cover strands may be composite structures like any of the cover strands described above.
  • one of the second cover strands 638 is arranged between each of the first cover strands 638 , and a cross-sectional area of the first cover strands 636 is larger than a cross-sectional area of second cover strands 638 .
  • the cross-sectional areas of the example first and second cover strands 636 and 638 are both round, but the cross-sectional area of the second cover strands 638 defines a smaller radius than the radius of the first cover strands 636 .
  • the centers of the example second cover strands 638 are arranged radially inwardly towards the core component 632 relative to the centers of the example first cover strands 636 .
  • FIG. 9C depicts a rope structure 640 comprising a core component 642 and a cover component 644 .
  • the cover component 644 comprises a set of cover strands 646 .
  • the example cover strands 646 may be composite structures like any of the cover strands described above.
  • the cover strands 646 define a primary lateral dimension W 1 and a primary radial dimension T 1 , where the radial dimension T 1 is smaller than the lateral dimension W 1 .
  • the example cover strands 646 further define a secondary lateral dimension W 2 and a secondary radial dimension T 2 .
  • the secondary lateral dimension W 2 is smaller than the primary lateral dimension W 1
  • the secondary radial dimension T 2 is smaller than the primary radial dimension T 1 .
  • Corners 646 a , 646 b , 646 c , and 646 d of the example cover strands 646 are rounded, and the second radial dimension T 2 corresponds to flat surfaces 646 e and 646 f .
  • the example cover strands 646 may be described as dogbone-shaped in cross-sectional area. This dogbone shape provides desirable performance characteristics for a given size and weight per unit length of the example cover strands 646 .
  • FIG. 9D depicts a rope structure 650 comprising a core component 652 and a cover component 654 .
  • the cover component 654 comprises a set of cover strands 656 .
  • the example cover strands 656 may be composite structures like any of the cover strands described above.
  • the cover strands 656 are quadrilaterals and thus define flat inner and outer surfaces 656 a and 656 b and flat side surfaces 656 c and 656 d .
  • the example cover strands 656 may define trapezoid shapes (or possibly complementary trapezium shapes) in cross-sectional area.
  • the example cover strands 656 are trapezoidal, and the angled side surfaces 656 c and 656 d of adjacent cover strands 656 overlap over a substantial surface area to minimize gaps between adjacent cover strands 656 .
  • the side surfaces 656 c and 656 d need not be flat but should be complementary.
  • the inner surfaces 656 a need not be flat, but may instead be shaped or contoured for better engagement with the core component 652 .
  • the outer surfaces 656 b also need not be flat and instead may be shaped, contoured, or textured to provide enhanced surface characteristics to the overall rope structure 650 .
  • the various components of the rope structures 20 , 120 , 220 , 320 , 420 , 520 , 620 , 630 , 640 , and 650 may be used in combinations other than the specific combinations disclosed herein.
  • the example rope structure 520 employs an intermediate component 524 and an outer component 528 formed by a film wrapped around the core component 522 and cover component 526 .
  • Either or both of the intermediate component 524 and the outer component 528 may be replaced by a coating such as the coating forming the example intermediate component 424 of the example rope structure 420 .
  • a coating or film may be applied to the core component 122 , first cover component 124 , and/or second cover component 126 of the second example rope structure 120 .
  • a coating or film may be applied to the core component 222 , first cover component 224 , and/or second cover component 226 of the third example rope structure 220 .
  • a second cover component such as the second cover component 226 of the third example rope structure 220 may be applied to any other rope structure (e.g., the rope structures 20 , 120 , 320 , 420 , 520 , 620 , 630 , 640 , and 650 ) embodying the principles of the present invention.
  • any one or more of the various components used to form rope structures of the present invention may be made of the same material (homogenous) or of different materials (non homogenous). Even a given component may be homogenous or non-homogenous depending upon the nature of the operating characteristics and environment.
  • any one of the structures 20 , 120 , 220 , 320 , 420 , 520 , 620 , 630 , 640 , and 650 could be terminated with swaging with end fittings, pot fitting using resin matrix, or simply by terminating only the core component using conventional techniques for splicing ropes.
  • the structure 20 , 120 , 220 , 320 , 420 , 520 , 620 , 630 , 640 , and 650 will typically held together temporarily.
  • the temporary holding method could be, for example, by covering the section with tape, and then using holes clamps at both ends to keep the construction together. Then the structure will be terminated using the swaging method or the pot fitting method. After the construction is fixed permanently (e.g. after certain resin curing time), then the holes clamps and tape can be removed.
  • resin could also be added into the end fittings to fill the gaps before clamping.
  • the swaging force would typically be justified depending on the materials.
  • the cone shape of the end of structure 20 , 120 , 220 , 320 , 420 , 520 , 620 , 630 , 640 , and 650 is maintained, and the end of the structure is put it into the pot.
  • the fitting pot will also typically be cone shaped.
  • the bottom of the pot is then sealed to avoid resin flow out.
  • Resin is added on top of the pot to avoid or minimize the formation of bubbles.
  • the entire construction will typically be kept hanging vertical to the ground until the resin is fully cured.
  • the spliced area may be covered using a separate splice cover component, structure, coating, and/or the like.

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