# US 11,896,061 B2 · Aerosol generation device, and heating chamber therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,896,061 B2 - Document ID: US11896061B2 - Status: Granted - Kind: B2 - Application number: 17/283,828 - Filed: 2019-10-09 - Published: 2021-12-09 - Granted: 2024-02-13 - Earliest claimed: 2018-10-12 - Assignees: JT International SA - Applicants: JT International S.A. - Inventors: Tony Reevell - Web page: https://patentgrep.com/patent/US11896061B2 ## CPC - A24F 40/70: Manufacture - A24F 40/20: Devices using solid inhalable precursors - A24F 40/46: Shape or structure of electric heating means - A24F 40/57: Temperature control - B29C 63/40: using sheet or web-like material - H05B 1/0244: {Heating of fluids (H05B1/0247 takes precedence)} - H05B 3/48: heating conductor embedded in insulating material - B29L 2031/7414: {Smokers'' requisites, e.g. pipe cleaners (cigar holders B29L2023/14)} - B29L 2031/779: {Heating equipment} - H05B 2203/017: Manufacturing methods or apparatus for heaters - A24F: SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES (inhaling appliances for medical purposes, shaped like cigars, cigarettes or pipes A61M15/06) - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES ## Abstract A method of constructing a heating chamber for an aerosol generation device includes providing a side wall of the heating chamber, providing a heater, and arranging the heater to be in thermal contact with the side wall of the heating chamber. The method may also include attaching a heat shrink layer to the outward facing side of the heater, and heating the heat shrink layer to a temperature such that the heat shrink layer contracts to compress the heater against the side wall. The heating chamber for the aerosol generation device includes a side wall defining an interior volume of the heating chamber, and a heater in thermal contact with the side wall, as well as a heat shrink layer under tension, compressing the heater against an outwardly facing surface of the side wall. ## Claims ### Claim 1 A method of constructing a heating chamber for an aerosol generation device comprising the steps of: providing aside wall of the heating chamber; providing a heater; arranging the heater to be in thermal contact with the side wall of the heating chamber; attaching a heat shrink layer to an outward facing side of the heater; heating the heat shrink layer to a temperature such that the heat shrink layer contracts to compress the heater against the side wall. ### Claim 2 (depends on 1) The method of claim 1, wherein the heat shrink layer is a layer of heat shrink tape wrapped around the side wall. ### Claim 3 (depends on 2) The method of claim 2, wherein the heat shrink layer contracts only along a length of the tape in response to heating. ### Claim 4 (depends on 1) The method of claim 1, wherein the heat shrink layer wraps around the heater, and wherein after heating, the heat shrink layer conforms to a shape of the side wall and the heater. ### Claim 5 (depends on 4) The method of claim 4, wherein after heating, the heat shrink layer exerts a homogeneous force on the heater. ### Claim 6 (depends on 1) The method of claim 1, wherein the step of heating the heat shrink layer results in between 5% and 12% contraction in length. ### Claim 7 (depends on 1) The method of claim 1, wherein the heat shrink layer is attached to the heater using a silicone adhesive or a silicone adhesive based tape. ### Claim 8 (depends on 7) The method of claim 7, wherein the step of heating the heat shrink layer comprises heating the heat shrink layer to a temperature not higher than a melting point of the silicone adhesive so as to cause the heat shrink layer to contract, and then further heating the heat shrink layer to an operational temperature of the device. ### Claim 9 (depends on 1) The method of claim 1, wherein the steps of arranging the heater to be in thermal contact with the side wall, and attaching the heat shrink layer to the outward facing side of the heater comprises first attaching the heat shrink layer to the heater, and then attaching a combination of the heat shrink layer and the heater to the side wall. ### Claim 10 (depends on 8) The method of claim 8, wherein an end of the heat shrink layer is attached to an end of the heater using adhesive tape, or wherein the outward facing side of the heater is attached to an inward facing side of the heat shrink layer using an adhesive layer. ### Claim 11 (depends on 1) The method of claim 1, wherein the step of attaching the heat shrink layer to the heater comprises wrapping the heat shrink layer at least two full rotations around the side wall, at a position where the heater is in thermal contact with the side wall. ### Claim 12 (depends on 1) A heating chamber produced in accordance with the method of claim 1. ### Claim 13 A heating chamber for an aerosol generation device, the heating chamber comprising: a side wall defining an interior volume of the heating chamber; a heater in thermal contact with the side wall; and a heat shrink layer under tension, compressing the heater against an outwardly facing surface of the side wall. ### Claim 14 (depends on 13) The heating chamber of claim 13, wherein the heat shrink layer is wrapped around the side wall for at least two full rotations at a position where the heater is in thermal contact with the side wall. ### Claim 15 (depends on 13) The heating chamber of claim 13, wherein the side wall and the heat shrink layer together hermetically seal the heater. ### Claim 16 (depends on 13) The heating chamber of claim 13, wherein the side wall is tubular and the heat shrink layer extends all the way around the outwardly facing surface of the side wall. ### Claim 17 (depends on 13) The heating chamber of claim 13, wherein the heat shrink layer is a layer of heat shrink tape wrapped around the side wall. ### Claim 18 (depends on 17) The heating chamber of claim 17, wherein the heat shrink layer is configured to contract only along a length of the tape in response to heating. ### Claim 19 (depends on 13) The heating chamber of claim 13, wherein the heat shrink layer comprises polyimide. ### Claim 20 (depends on 13) The heating chamber of claim 13, wherein the heat shrink layer has a thickness of 50 μm or less. ### Claim 21 (depends on 13) The heating chamber of claim 13, wherein the heat shrink layer has a thermal conductivity lower than that of the side wall. ### Claim 22 (depends on 13) The heating chamber of claim 13, further comprising a thermistor, and wherein the thermistor is covered by the heat shrink material and wherein the heat shrink material compresses the thermistor against the outwardly facing surface of the side wall. ### Claim 23 (depends on 13) An aerosol generation device, comprising: an electrical power source; the heating chamber according to claim 13; and control circuitry arranged to control a supply of electrical power from the electrical power source to the heater.