High temperature resistant rope systems and methods
View Patent ↗A fire resistant rope and method of making the same. The fire resistant rope comprises high tensile strength fibers, high temperature resistant fibers, and a fire retardant coating. The fire retardant coating is applied to at least one of the high tensile strength fibers and the high temperature resistant fibers. The high tensile strength fibers are combined to form a core. The high temperature resistant fibers are combined to form a jacket that at least partly covers the core. The jacket is configured to inhibit movement of air to the core. The coating is configured to inhibit movement of air to the core.
1. A fire resistant rope comprising:
a core comprising a plurality of core strands, where each core strand comprises a plurality of core yarns and each core yarn comprises a plurality of high tensile strength fibers;
a jacket comprising a plurality of jacket strands, where each jacket strand comprises a plurality of jacket yarns and each jacket yarn comprises a plurality of high temperature resistant fibers, where
the jacket covers the core, and
an intermediate zone is defined by the core and the jacket; and
a coating formed on at least one of the core and the jacket such that, when the rope is exposed to heat outside a predetermined range, the coating expands such that at least a portion of the expanded coating inhibits transfer of heat to the core through the intermediate region.
2. A fire resistant rope as recited in claim 1 , in which the high tensile strength fibers forming the core are filaments made of at least one material selected from the group of materials consisting of PBO, M5, PBI, Aramid, Carbon, Glass, Ceramic, Basalt, Melamine, Polyimide, Polyetheretherketone (PEEK), polyesters, and nylon.
3. A fire resistant rope as recited in claim 1 , in which the high temperature resistant fibers forming the jacket are filaments made of at least one material selected from the group of materials consisting of PBO, M5, PBI, Aramid, Carbon, Glass, Ceramic, Basalt, Melamine, Polyimide, Polyetheretherketone (PEEK), and PTFE.
4. A fire resistant rope as recited in claim 2 , in which the high temperature resistant fibers forming the jacket are filaments made of at least one material selected from the group of materials consisting of PBO, M5, PBI, Aramid, Carbon, Glass, Ceramic, Basalt, Melamine, Polyimide, Polyetheretherketone (PEEK), and PTFE.
5. A fire resistant rope as recited in claim 1 , in which the coating is a fire retardant coating.
6. A fire resistant rope as recited in claim 5 , in which
the fire retardant coating is applied to the individual strands.
7. A fire resistant rope as recited in claim 5 , in which the fire retardant coating inhibits movement of air to the core.
8. A fire resistant rope as recited in claim 5 , in which the fire retardant coating is applied to the individual yarns.
9. A fire resistant rope as recited in claim 5 , in which the fire retardant coating is applied to the individual filaments.
10. A fire resistant rope as recited in claim 5 , in which the fire retardant coating is applied to at least one of the individual strands, the individual yarns, and the individual filaments.
11. A fire resistant rope as recited in claim 1 , in which the fire retardant coating is a water-based polymer.
12. A fire resistant rope as recited in claim 1 , in which the fire retardant coating expands when subjected to temperatures above a predetermined state-change level.
13. A fire resistant rope as recited in claim 12 , in which the state-change level is below a failure temperature defined by the materials from which at least some of the fibers forming the core are formed.
14. A method of forming a fire resistant rope comprising the steps of:
providing a plurality of high tensile strength fibers;
combining the high tensile strength fibers into a plurality of high strength yarns;
combining the plurality of yarns into a plurality of high strength strands;
combining the plurality of high strength strands to form a core;
providing a plurality of high temperature resistant fibers;
combining the high temperature resistant fibers into a plurality of temperature resistant yarns;
combining the plurality of temperature resistant yarns into a plurality of temperature resistant strands; and
combining the temperature resistant strands to form a jacket around the core, where an intermediate zone is defined by the core and the jacket; and
forming a coating such that the coating substantially surrounds the core and, when the rope is exposed to heat outside a predetermined range, the coating expands such that at least a portion of the expanded coating inhibits transfer of heat to the core through the intermediate region.
15. A method as recited in claim 14 , in which step of providing the plurality of high tensile strength fibers comprises the step of forming filaments made of at least one material selected from the group of materials consisting of PBO, M5, PBI, Aramid, Carbon, Glass, Ceramic, Basalt, Melamine, Polyimide, Polyetheretherketone (PEEK), polyester, and nylon.
16. A method as recited in claim 14 , in which step of providing the plurality of high temperature resistant fibers comprises the step of forming filaments made of at least one material selected from the group of materials consisting of PBO, M5, PBI, Aramid, Carbon, Glass, Ceramic, Basalt, Melamine, Polyimide, Polyetheretherketone (PEEK), and PTFE.
17. A method as recited in claim 15 , in which step of providing the plurality of high temperature resistant fibers comprises the step of forming filaments made of at least one material selected from the group of materials consisting of PBO, M5, PBI, Aramid, Carbon, Glass, Ceramic, Basalt, Melamine, Polyimide, Polyetheretherketone (PEEK), and PTFE.