Carlisle has been granted a patent for a fiber optic cable that includes a highly flame-resistant outer jacket layer. The cable also features a strength member layer composed of at least 25% high temperature fiber material, providing increased durability and resistance to high temperatures. The cable is designed to withstand temperatures exceeding 950°C and is suitable for use in demanding environments. GlobalData’s report on Carlisle gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Carlisle, Fiber-reinforced material joining techniques was a key innovation area identified from patents. Carlisle's grant share as of September 2023 was 62%. Grant share is based on the ratio of number of grants to total number of patents.
Patent granted for a flame-resistant fiber optic cable
A recently granted patent (Publication Number: US11726282B2) describes a fiber optic cable with enhanced fire resistance and high-temperature capabilities. The cable consists of several layers, including an optical fiber element with a glass core and cladding layer, a primary buffer layer, an inner jacket layer, a strength member layer, and an outer jacket layer.
The strength member layer, which surrounds the inner jacket layer and the optical fiber element, is made up of a combination of high-temperature fiber material and aramid fibers. At least one of the yarns in the strength member layer is formed of a high-temperature fiber material with a softening point or rated operating temperature exceeding 950°C. The composition of the strength member layer includes at least 25% high-temperature fiber material.
The outer jacket layer of the fiber optic cable is formed of a highly flame-resistant material. This material has a Limiting Oxygen Index (LOI) of equal to or greater than 30, indicating its ability to resist combustion in the presence of oxygen.
The patent also mentions the use of various materials for the inner jacket layer, including flame-retardant thermoplastics such as FR-TPC and FR-PCT-ET, as well as crosslinked polyvinylchloride and polyethylene.
Additionally, the patent discusses the use of different high-temperature fiber materials for the strength member layer, such as S-glass fibers, R-glass fibers, ceramic fibers, and quartz silica fibers.
The thickness of the strength member layer is specified to be in the range of 0.001-0.030 inches, while the outer jacket layer has a thickness in the range of 0.004-0.025 inches.
In summary, the granted patent describes a fiber optic cable with improved fire resistance and high-temperature capabilities. The cable incorporates a combination of high-temperature fiber material and aramid fibers in the strength member layer, along with a highly flame-resistant outer jacket layer. The use of specific materials and thickness ranges for the various layers ensures the cable's performance in demanding environments.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
