Heating smokeable material

• US 10,881,138 B2
• Filed: 04/11/2013
• Issued: 01/05/2021
• Est. Priority Date: 04/23/2012
• Status: Active Grant

• Current Assignee: Nicoventures Trading Ltd. (British American Tobacco PLC)
• Original Assignee: British American Tobacco Limited (British American Tobacco PLC)
• Inventors: Saleem, Fozia, Woodman, Thomas
• Primary Examiner(s): Yaary, Eric
• Assistant Examiner(s): Sparks, Russell E
• Application Number:
  US14/382,198
• Publication Number:
  US 20150040925A1
• Time in Patent Office: 2,826 Days
• Field of Search: 131328
• CPC Class Codes: A24F 40/20 Devices using solid inhalable precursors
• CPC Class Codes: A24F 40/46 Shape or structure of electric heating means
• CPC Class Codes: A24F 40/50 Control or monitoring
• CPC Class Codes: H05B 3/146 Conductive polymers, e.g. polyethylene, thermoplastics
• CPC Class Codes: H05B 3/42 non-flexible

Abstract

An apparatus including a film heater configured to heat smokeable material to volatilize at least one component of the smokeable material for inhalation. The film heater including a plurality of independently operable heating regions aligned with each other along a longitudinal axis of the film heater to provide a plurality of independent heating zones along the length of the film heater.

Claims

1. An apparatus, comprising:

an elongate housing;

a heat chamber configured to receive smokeable material; and

a film heater disposed within the elongate housing and configured to heat the heat chamber such that, in use, the smokeable material received in the heat chamber is heated to volatilize at least one component of the smokeable material for inhalation, the film heater comprising a plurality of independently operable heating regions aligned with each other along a longitudinal axis of the film heater to provide a plurality of independent heating zones along the length of the film heater.

2. The apparatus according to claim 1, wherein the film heater is a polyimide film heater.

3. The apparatus according to claim 1, wherein the film heater has a thickness of less than 1 mm.

4. The apparatus according to claim 1, wherein the film heater has a thickness of less than 0.5 mm.

5. The apparatus according to claim 1, wherein the film heater has a thickness of between approximately 0.2 mm and 0.0002 mm.

6. The apparatus according to claim 1, further comprising thermal insulation, wherein the thermal insulation is separated from the film heater by a barrier.

7. The apparatus according to claim 6, wherein the barrier comprises a layer of stainless steel.

8. The apparatus according to claim 1, further comprising a mouthpiece configured for user inhalation of volatized components of the smokeable material.

9. The apparatus according to claim 1, wherein the apparatus is configured to heat the smokeable material without combusting the smokeable material.

10. An apparatus according to claim 1, further comprising smokeable material to be received in the apparatus.

11. The apparatus according to claim 1, further comprising thermal insulation or heat reflective material, wherein the plurality of independently operable heating regions are longitudinally separated from one another by the thermal insulation or heat reflective material.

12. The apparatus according to claim 1, further comprising a controller configured to cause the heater to be partially activated so that the heater heats up in preparation to volatilize components of the smokeable material.

13. The apparatus according to claim 12, wherein partial activation of the heater comprises causing a heating region to be partially activated.

14. The apparatus according to claim 1, further comprising a controller configured to cause a first heating region to be partially activated so as to attain a first temperature, and to cause a second heating region to be fully activated so as to attain a second temperature, the first temperature being less than the second temperature.

15. The apparatus according to claim 14, wherein the controller is configured to cause the first heating region to be partially activated while the second heating region is fully activated.

16. The apparatus according to claim 11, wherein the thermal insulation forms a thermal insulation layer that is integrated with the film heater.

17. The apparatus according to claim 11, wherein the thermal insulation is lined with the film heater.

18. The apparatus according to claim 11, wherein a thickness of the thermal insulation or heat reflective material is less than approximately 1 mm.

21. A method of heating smokeable material to volatilize at least one component of the smokeable material for inhalation, comprising heating the smokeable material by the apparatus of claim 1.

19. A method, comprising:

manufacturing an apparatus comprising an elongate housing;

a heat chamber configured to receive smokeable material; and

a film heater disposed within the elongate housing and configured to heat the heat chamber such that, in use, the smokeable material received in the heat chamber is heated to volatilize at least one component of the smokeable material for inhalation, the film heater comprising a plurality of independently operable heating regions aligned with each other along a longitudinal axis of the film heater to provide a plurality of independent heating zones along the length of the film heater.

20. An apparatus, comprising:

an elongate housing;

a heat chamber configured to receive smokeable material;

a film heater disposed within the elongate housing and configured to heat the heat chamber such that, in use, smokeable material received in the heat chamber is heated to volatilize at least one compound from the smokeable material without combustion of the smokeable material, the film heater comprising a plurality of independently operable heating regions aligned with each other along a longitudinal axis of the film heater to provide a plurality of independent heating zones along the length of the film heater;

a power source disposed within the elongate housing and configured to provide power to the film heater; and

an inhalation mouthpiece disposed at an end of the elongate housing configured such that, in use, at least one compound volatized from smokeable material received in the heat chamber can be inhaled by a user of the apparatus.