# US 2018/0320810 A1 · Fire protection for pipes > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0320810 A1 - Document ID: US20180320810A1 - Status: Published application - Kind: A1 - Application number: 15/772,298 - Filed: 2016-10-31 - Published: 2018-11-08 - Earliest claimed: 2015-10-29 - Assignees: Favuseal AS - Applicants: Favuseal AS - Inventors: Christian Schlytter-Henrichsen - Web page: https://patentgrep.com/patent/US20180320810A1 ## CPC - F16L 59/145: {providing fire-resistance} - A62C 2/065: {having as the main closure device materials, whose characteristics undergo an irreversible change under high temperatures, e.g. intumescent} - F16L 55/07: Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining (apparatus for draining F16T) - F16L 57/04: against fire or other external sources of extreme heat - F16L 59/143: {Pre-insulated pipes} - F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL - A62C: FIRE-FIGHTING (fire-extinguishing compositions, use of chemical substances in extinguishing fires A62D1/00; spraying, applying liquids or other fluent materials to surfaces in general B05; alarm arrangements G08B, e.g. fire alarms actuated by smoke or gases G08B17/10) ## Abstract A fire protection product for use as fire protection of a pipe (10), comprising an active layer (11) of a material containing an active substance which, when subjected to heat, expands and undergoes one or more endothermic reaction processes, the active layer (11) enclosing the pipe (10) on at least a length of the pipe to be protected; a plurality of distance pieces (12) extending a distance outwardly from the active layer (11); and an outer tubular cladding (13) supported by the distance pieces (12) and enclosing the pipe (10), the active layer (11) and the distance pieces (12). The active layer (11), the distance pieces (12) and the outer tubular cladding (13) define a space (15) with a volume, which can accommodate the active substance (11) after the active substance (11) has expanded. The active substance can be rubber based or polymer based. ## Claims ### Claim 1 A fire protection product configured to protect a pipe, the fire protection product comprising: an active layer of a material comprising an active substance which, when subjected to heat, expands and undergoes an endothermic reaction process, the active layer enclosing the pipe on at least a length of the pipe to be protected, a plurality of distance pieces extending a distance outwardly from the active layer, and an outer tubular cladding supported by the distance pieces and enclosing the pipe the active layer and the distance pieces, wherein the active layer, the distance pieces and the outer tubular cladding define a space with a volume, which can accommodate the active substance after the active substance has expanded, wherein the space defines a draining path for draining of water, and wherein the plurality of distance pieces extend circumferentially around the active layer and have gaps aligned in an axial direction of the pipe so as to define the draining path. ### Claim at position 2 2-14. (canceled) ### Claim 15 (depends on 1) The fire protection product according to claim 1, wherein a longitudinally extending part of the draining path comprising the gaps extends along a substantial part of a downwardly facing side of the length of the pipe to be protected, when the fire protection product is in use. ### Claim 16 (depends on 15) The fire protection product according to claim 15, wherein the longitudinally extending part of the draining path comprising the gaps is straight. ### Claim 17 (depends on 1) The fire protection product according to claim 1, wherein one or more draining holes are provided in the outer tubular cladding and said one or more draining holes are configured to drain water from the draining path through the one or more draining holes. ### Claim 18 (depends on 17) The fire protection product according to claim 17, wherein each draining hole of the one or more draining holes is closed with a removable plug. ### Claim 19 (depends on 1) The fire protection product according to claim 1, wherein the active layer is water impermeable. ### Claim 20 (depends on 1) The fire protection product according to claim 1, wherein the active substance is halogen free. ### Claim 21 (depends on 1) The fire protection product according to claim 1, wherein the active substance is fibre free. ### Claim 22 (depends on 1) The fire protection product according to claim 1, wherein the active substance releases no corrosive gases or significant smoke production when heated. ### Claim 23 (depends on 1) The fire protection product according to claim 1, wherein the active substance will, at a first elevated temperature, swell and fill the void spaces generated by the distance pieces and, secondly, undergo a first endothermic process during, whereby water is released and evaporated. ### Claim 24 (depends on 1) The fire protection product according to claim 1, wherein the active substance will, at a second elevated temperature higher than the first elevated temperature, undergo a second endothermic process during which a physically and thermally stable fire barrier is created. ### Claim 25 (depends on 1) The fire protection product according to claim 1, wherein the active substance is a thermoplastic compound containing inorganic fillers in a binder composed of a copolymer. ### Claim 26 (depends on 1) A pipe comprising the fire protection product according to claim 1. ### Claim 27 (depends on 26) The pipe according to claim 26, further comprising a layer of thermal insulation material on the outer tubular cladding. ### Claim 28 (depends on 1) The fire protection product according to claim 1, wherein the active substance is a thermoplastic compound containing inorganic fillers in a binder composed of an ethylene copolymer.