# US 12,179,048 B2 · Fire barrier, a method for installing the same, an expansion joint system and a fire barrier assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,179,048 B2 - Document ID: US12179048B2 - Status: Granted - Kind: B2 - Application number: 17/533,916 - Filed: 2021-11-23 - Published: 2022-03-17 - Granted: 2024-12-31 - Earliest claimed: 2018-12-11 - Assignees: Sika Technology AG - Applicants: Sika Technology AG - Inventors: John Sobol; Gary Moore; Neil Jesse Hamilton; Paul Pumm; Greg Ross - Web page: https://patentgrep.com/patent/US12179048B2 ## CPC - A62C 2/065: {having as the main closure device materials, whose characteristics undergo an irreversible change under high temperatures, e.g. intumescent} - A62C 3/0214: {for buildings or installations in fire storms} - A62C 3/0257: {Fire curtains, blankets, walls, fences} - E04B 1/68: of joints, e.g. expansion joints (packing for joints in roads or airfields E01C11/02; expansion joints for bridges E01D19/06; sealing joints between foundation piles E02D5/14; joints in foundation structures E02D29/16; devices for sealing the spaces or joints between roof-covering elements E04D1/36; sealing joints between roof-covering elements E04D3/38; {construction of joints for flooring or floor layers composed of a number of similar elements E04F15/02005}; construction of joints for flooring or floor layers made of masses in situ E04F15/14) - E04B 1/947: {by closing openings in walls or the like in the case of fire (fire-proof doors E06B5/16)} - E04B 1/948: {Fire-proof sealings or joints (for doors or windows E06B5/164)} - 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) - E04B: GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS (border constructions of opening in walls, floors or ceilings E06B1/00; {electromagnetic shielding H05K9/0001}) ## Abstract The presently claimed invention relates to a fire barrier, a method for installing the same, an expansion joint system and a fire barrier assembly. ## Claims ### Claim 1 A fire barrier comprising: a first fire blanket having a top side, a bottom side, a first lateral side and a second lateral side, a second fire blanket having a top side, a bottom side, a first lateral side and a second lateral side, said second fire blanket, a first intumescent sheet having a first surface and a second surface, said first intumescent sheet affixed to a first structure, a second intumescent sheet having a first surface and a second surface, said second intumescent sheet affixed to a second structure; and at least one flame retardant element disposed on the top side of the first fire blanket, the at least one flame retardant element partially covering the top side of the first fire blanket, such that a void is formed between the first fire blanket and the second fire blanket, wherein the first lateral side of the first fire blanket and the first lateral side of the second fire blanket are affixed to a portion of the first surface of the first intumescent sheet and the second lateral side of the first fire blanket and the second lateral side of the second fire blanket are affixed to a portion of the first surface of the second intumescent sheet. ### Claim 2 (depends on 1) The fire barrier according to claim 1, wherein at least one of the first and second fire blankets is surrounded by a metal foil. ### Claim 3 (depends on 1) The fire barrier according to claim 1, further comprising a third fire blanket having a top side, a bottom side, a first lateral side, and a second lateral side. ### Claim 4 (depends on 3) The fire barrier according to claim 3, wherein the third fire blanket comprises a ceramic fiber blanket surrounded with a metal foil. ### Claim 5 (depends on 4) The fire barrier according to claim 4, wherein the third fire blanket comprises a ceramic fiber blanket surrounded with a metal foil. ### Claim 6 (depends on 1) The fire barrier according to claim 1, further comprising a third fire blanket having a top side, a bottom side, a first lateral side and a second lateral side. ### Claim 7 (depends on 1) The fire barrier according to claim 1, wherein at least one of the first and second fire blankets comprises alkaline earth silicate wool fibers, polycrystalline wool fibers, alumina magnesia silicate fibers, calcium silicate fibers, kaowool fibers, rockwool fibers, mineral wool fibers, slag wool fibers, stone wool fibers, silica fibers, or combinations thereof. ### Claim 8 (depends on 7) The fire barrier according to claim 7, wherein the alkaline earth silicate wool fibers comprise magnesium silicate fibers, calcium magnesium silicate fibers and combinations thereof. ### Claim 9 (depends on 7) The fire barrier according to claim 7, wherein the polycrystalline wool fibers comprise fibers comprising a mullite composition having greater than 70 weight percent silica and alumina. ### Claim 10 (depends on 7) The fire barrier according to claim 7, wherein the polycrystalline wool fibers comprise high alumina polycrystalline wool fibers having greater than 90 weight percent alumina. ### Claim 11 (depends on 7) The fire barrier according to claim 7, wherein the silica fibers greater than 90 weight percent silica. ### Claim 12 (depends on 1) The fire barrier according to claim 1, wherein the flame retardant element comprises of ceramic fiber, mineral wool, rock wool, calcium silicate, sodium silicate, potassium silicate, magnesium oxide, intumescent material and silicone. ### Claim 13 (depends on 12) The fire barrier according to claim 12, wherein the flame retardant element comprises of ceramic fiber. ### Claim 14 (depends on 1) The fire barrier according to claim 1, wherein the at least one flame retardant element is disposed on the top side of the first fire blanket and also on the top side of the second fire blanket. ### Claim 15 (depends on 1) The fire barrier according to claim 1, wherein the at least one flame retardant element is also disposed on the top side of the second fire blanket and the top side of a third fire blanket. ### Claim 16 (depends on 1) The fire barrier according to claim 1, wherein a portion of the first surface of the first intumescent sheet extends longitudinally to form a first foldable splice, said first foldable splice is an integral part of the first intumescent sheet and covers a portion of area enclosed by the top sides and the first lateral sides of the first fire blanket, the second fire blanket and a third fire blanket. ### Claim 17 (depends on 1) The fire barrier according to claim 1, further comprising a waterproof gutter, wherein the waterproof gutter comprises a bottom layer and two lateral sides, wherein the bottom layer comprises an outer surface and an inner surface, and wherein the outer surface of the bottom layer of the waterproof gutter is affixed to the top side of the first fire blanket or the top side of the second fire blanket or the top side of a third fire blanket. ### Claim 18 (depends on 1) The fire barrier according to claim 1, further comprising a metal shroud covering a portion of the fire barrier, said metal shroud affixed to the second surfaces of the first intumescent sheet and the second intumescent sheet, independent of each other, with a fourth adhesive. ### Claim 19 (depends on 18) The fire barrier according to claim 18, wherein the metal shroud comprises a stainless-steel mesh. ### Claim 20 (depends on 1) A method for installing an expansion joint fire barrier, comprising the steps of: a. providing a first structure and a second structure spatially separated to form an expansion joint therebetween, and b. affixing at least one fire barrier according to claim 1 into the expansion joint. ### Claim 21 (depends on 1) An expansion joint system comprising: a first structure and a second structure spatially separated to form an expansion joint therebetween, and a fire barrier according to claim 1, wherein the second surface of the first intumescent sheet is affixed to the first structure, and the second surface of the second intumescent sheet is affixed to the second structure. ### Claim 22 (depends on 1) A fire barrier assembly comprising: at least one fire barrier according to claim 1, and at least one pressure sensitive adhesive that affixes the at least one fire barrier to the second surface of the first intumescent sheet and the second surface of the second intumescent sheet.