# US 2018/0022156 A1 · Protective Crown Reinforcement For Aeroplane Tire > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0022156 A1 - Document ID: US20180022156A1 - Status: Published application - Kind: A1 - Application number: 15/534,350 - Filed: 2015-12-02 - Published: 2018-01-25 - Earliest claimed: 2014-12-08 - Assignees: Compagnie Generale Des Etablissements Michelin; Michelin Recherche et Technique S.A. - Applicants: Compagnie Generale Des Etablissements Michelin; Michelin Recherche Et Technique S.A. - Inventors: Rimyalegdo KIEBRE; Olivier FRANCOIS - Web page: https://patentgrep.com/patent/US20180022156A1 ## CPC - B60C 9/1807: {comprising fabric reinforcements} - B60C 9/263: {further characterised by an endless zigzag configuration in at least one belt ply, i.e. no cut edge being present} - B60C 2200/02: for aircrafts - B60C: VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES ## Abstract Protective reinforcement (3) for a tire has a mean radial thickness T at least equal to two times the diameter D of a reinforcer (4), the protective reinforcement (3) comprises respectively on its radially interior face (31) and on its radially exterior face (32) parts (7) made of elastomeric compound having an axial width W at least equal to the diameter D of a reinforcer (4), and the path of any reinforcer (4), in the circumferential direction (XX′) of the tire, varies radially between the radially interior first face (31) and the radially exterior second face (32), in such a way that the set of paths of the reinforcers (4) of the protective reinforcement (3) constitutes a three-dimensional lattice. ## Claims ### Claim 1 Aircraft tire comprising: a tread, adapted to come into contact with a ground; a protective reinforcement, radially on the inside of the tread; the protective reinforcement having a cylindrical structure having as its axis of revolution the axis of rotation of the tire, extending axially from a first axial end as far as a second axial end (E2) over an axial width L and extending radially from a radially interior first face as far as a radially exterior second face over a mean radial thickness T; the protective reinforcement comprising reinforcers coated in an elastomer compound, having a diameter D and having a path in the circumferential direction of the tires; the protective reinforcement being radially on the outside of a working reinforcement; the working reinforcement comprising at least two radially superposed working layers made up of reinforcers having a zigzag path in the circumferential direction of the tire; wherein the protective reinforcement has a mean radial thickness T at least equal to two times the diameter D of a reinforcer, in that the protective reinforcement comprises respectively on its radially interior face and on its radially exterior face parts made of elastomeric compound having an axial width W at least equal to the diameter D of a said reinforcer and wherein the path of any said reinforcer of the protective reinforcement, in the circumferential direction of the tire, varies radially between the radially interior first face and the radially exterior second face, in such a way that the set of paths of the reinforcers of the protective reinforcement constitutes a three-dimensional lattice. ### Claim 2 (depends on 1) The aircraft tire according to claim 1, wherein the protective reinforcement has a mean radial thickness T at most equal to five times the diameter D of a said reinforcer. ### Claim 3 (depends on 1) The aircraft tire according to claim 1, wherein the axial width W of the parts made of elastomeric compound, comprised respectively on the radially interior face and on the radially exterior face of the protective reinforcement, is at most equal to ten times the diameter D of a said reinforcer. ### Claim 4 (depends on 1) The aircraft tire according to claim 1, wherein in any meridian plane, the ratio R, between the sum of the axial widths W of the parts made of elastomeric compound, comprised respectively on the radially interior face and on the radially exterior face of the protective reinforcement, and the axial width L of the protective reinforcement, is at least equal to 0.08. ### Claim 5 (depends on 1) The aircraft tire according to claim 1, wherein in any meridian plane, the ratio R, between the sum of the axial widths W of the parts made of elastomeric compound, comprised respectively on the radially interior face and on the radially exterior face of the protective reinforcement, and the axial width L of the protective reinforcement, is at most equal to 0.20. ### Claim 6 (depends on 1) The aircraft tire according to claim 1, wherein the reinforcers of the protective reinforcement are grouped into strips, comprising at least two consecutive reinforcers. ### Claim 7 (depends on 1) The aircraft tire according to claim 1, wherein the reinforcers of the protective reinforcement are made of at least one textile material. ### Claim 8 (depends on 1) The aircraft tire according to claim 1, wherein the reinforcers of the protective reinforcement are made of an aliphatic polyamide or of an aromatic polyamide or of a combination of an aliphatic polyamide and of an aromatic polyamide. ### Claim 9 (depends on 1) The aircraft tire according to claim 1, wherein the axial width W of the parts made of elastomeric compound, comprised respectively on the radially interior face and on the radially exterior face of the protective reinforcement, is at most equal to five times the diameter D of a said reinforcer. ### Claim 10 (depends on 1) The aircraft tire according to claim 1, wherein, in any meridian plane, the ratio R, between the sum of the axial widths W of the parts made of elastomeric compound, comprised respectively on the radially interior face and on the radially exterior face of the protective reinforcement, and the axial width L of the protective reinforcement, is at least equal to 0.10. ### Claim 11 (depends on 1) The aircraft tire according to claim 1, wherein in any meridian plane, the ratio R, between the sum of the axial widths W of the parts made of elastomeric compound, comprised respectively on the radially interior face and on the radially exterior face of the protective reinforcement, and the axial width L of the protective reinforcement, is at most equal to 0.15.