# US 9,435,117 B2 · Floor slab and floor comprising such a slab > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,435,117 B2 - Document ID: US9435117B2 - Status: Granted - Kind: B2 - Application number: 14/896,858 - Filed: 2014-06-04 - Published: 2016-06-16 - Granted: 2016-09-06 - Earliest claimed: 2013-06-10 - Assignees: Grands Magasins de la Samaritaine Maison Ernest Cognacq; Luxinov - Applicants: Grands Magasins de la Samaritaine Maison Ernest Cognacq; Luxinov - Inventors: Denis Zago - Web page: https://patentgrep.com/patent/US9435117B2 ## CPC - E04B 1/942: {slab-shaped} - B32B 9/002: {comprising natural stone or artificial stone} - B32B 17/069: {of intumescent material (B32B17/10311 takes precedence)} - B32B 17/10045: {with at least one intermediate layer consisting of a glass sheet} - B32B 17/10055: {with at least one intermediate air space} - B32B 17/10091: {thermally hardened} - B32B 17/10119: {having a composition deviating from the basic composition of soda-lime glass, e.g. borosilicate} - B32B 17/10311: {Intumescent layers for fire protection} - B32B 17/10761: {containing vinyl acetal} - E04B 5/02: Load-carrying floor structures formed substantially of prefabricated units (E04B5/43 - E04B5/48 take precedence) - E04B 5/46: Special adaptation of floors for transmission of light, e.g. by inserts of glass (of ceilings E04B9/32, block-shaped elements E04C1/42; slab- or sheet-shaped elements E04C2/54; for roof covering E04D3/06) - E04C 2/296: composed of insulating material and non-metallic or unspecified sheet-material (E04C2/288 takes precedence) - E04C 2/34: composed of two or more spaced sheet-like parts (E04C2/32 takes precedence; spacers for cavity walls E04B2/44) - E04C 2/50: {Self-supporting slabs specially adapted for making floors ceilings, or roofs, e.g. able to be loaded (E04C2/52, E04C2/54 take precedence; structures of slab-shaped elements E04B1/02; floor structures E04B5/00; roofs consisting of self-supporting slabs E04B7/20; ceilings E04B9/00; roof coverings E04D; floor coverings E04F15/00)} - E04C 2/54: Slab-like translucent elements (floors for transmitting light E04B5/46; translucent or open-work ceilings E04B9/32, E04B9/34; translucent roof coverings E04D3/06, E04D3/28) - E04F 15/10: of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite {tiles}, hardboard {, or with a top layer of other materials} - B32B 2607/00: Walls, panels - 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}) - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - E04C: STRUCTURAL ELEMENTS; BUILDING MATERIALS (for bridges E01D; specially designed for insulation or other protection E04B; elements used as building aids E04G; for mining E21; for tunnels E21D; structural elements with broader range of application than for building engineering F16, particularly F16S) - E04F: FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS (windows, doors E06B) ## Abstract A slab comprising: a top traffic plate designed to form a floor element allowing the circulation of persons and to allow light to pass through; a translucent bottom plate forming a thermal barrier; an intumescent layer designed to increase in volume from a predefined temperature, arranged between the top and bottom plates, and to allow light to pass through; and an expansion space between the top and bottom plates, the expansion space being designed to allow expansion of the intumescent layer. ## Claims ### Claim 1 A slab comprising: a top traffic plate designed to form a floor element allowing the circulation of persons, the top plate being designed to allow light to pass through; a translucent bottom plate forming a thermal barrier; an intumescent layer designed to increase in volume from a predefined temperature, arranged between the top and bottom plates, the intumescent layer being designed to allow light to pass through; and an empty expansion space between the top and bottom plates, wherein the expansion space is devoid of intumescent material and is designed to all the expansion of the intumescent layer into the expansion space. ### Claim 2 (depends on 1) The slab according to claim 1, in which the bottom plate comprises a glass underlay and a marble underlay fixed to each other. ### Claim 3 (depends on 2) The slab according to claim 2, in which the glass underlay and the marble underlay each present a thickness of between 4 and 10 mm. ### Claim 4 (depends on 1) The slab according to claim 1, in which the expansion space comprises a first expansion zone between the intumescent layer and the top plate, and a second expansion zone between the intumescent layer and the bottom plate. ### Claim 5 (depends on 4) The slab according to claim 4, in which each expansion zone presents a thickness at least equal to 3 mm. ### Claim 6 (depends on 1) The slab according to claim 1, in which the top plate comprises at least three glass underlays. ### Claim 7 (depends on 1) The slab according to claim 1, in which the intumescent layer is in glass and presents a thickness of between 10 and 50 mm. ### Claim 8 (depends on 1) The slab according to claim 1, presenting a total thickness of between 50 and 100 mm. ### Claim 9 (depends on 1) A floor comprising a supporting framework and a plurality of slabs according to of claim 1 fixed onto the supporting framework. ### Claim 10 (depends on 9) The floor according to claim 9, in which the supporting framework comprises a mesh of metal sections and a thermal insulation device surrounding the sections. ### Claim 11 (depends on 10) The floor according to claim 10, in which the thermal insulation device comprises at least one insulation block in fibro-silicate. ### Claim 12 (depends on 10) The floor according to claim 10, in which the thermal insulation device comprises at least one element chosen from among an intumescent strip and an intumescent paint.