Etex has been granted a patent for a fire-protection collar element and method for closing through-passages in walls, ceilings, and floors during a fire. The collar element includes a lining made of intumescent material and a fireproof sheath made of flexible metal foil. The lining expands in the event of a fire, and the width of the lining is up to 10% greater than the width of the sheath. GlobalData’s report on Etex 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 Etex, prosthetic cardiac valves was a key innovation area identified from patents. Etex's grant share as of June 2023 was 1%. Grant share is based on the ratio of number of grants to total number of patents.
Fire-protection collar element for closing through-passages in walls
A recently granted patent (Publication Number: US11648427B2) describes a fire-protection collar element designed to close through-passages in walls, ceilings, and floors in the event of a fire. The collar element consists of a fireproof sheath made of metal, which is formed in a tubular or annular manner. The sheath is constructed using thin foil strips, with a thickness ranging from 10 µm to 100 µm. The inner surface of the sheath is lined with an intumescent material that expands when exposed to fire.
One notable feature of the fire-protection collar element is that the lining extends partially beyond the sheath on at least one side. The width of the lining is also up to 10% greater than the width of the sheath. This design ensures a secure and effective closure of through-passages during a fire.
The patent also mentions an integral and adhesive-free connection between the sheath and lining, further enhancing the reliability of the fire-protection collar element. Additionally, the sheath can be embedded or accommodated in a surface-flush manner within the lining, providing a seamless appearance.
The fire-protection collar element can be in the form of a band, with a maximum overall thickness ranging from 3 mm to 7 mm. It may also include holders for fastening the collar on structural parts such as walls, ceilings, and floors. These holders have anchoring and/or fixing means, such as lugs that can be bent around the peripheries of the collar element or into the collar element itself.
The patent also describes variations in the thickness of the fire-protection collar band, ranging from approximately 3.5 mm to approximately 6 mm. In some embodiments, the collar element can accommodate multiple layers of the band.
Overall, this patented fire-protection collar element offers an innovative design for closing through-passages in the event of a fire. Its use of a metal sheath, intumescent lining, and various fastening mechanisms ensures effective fire protection and ease of installation.
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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.
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.
