Aerosol generating material and devices including the same

Patent metadata

Field	Value
Publication number	US-10271578-B2
Application number	US-201415036318-A
Country	US
Kind code	B2
Filing date	Nov 14, 2014
Priority date	Nov 15, 2013
Publication date	Apr 30, 2019
Grant date	Apr 30, 2019

Abstract

There is provided a device for generating an inhalable aerosol and/or gas, the device comprising an aerosol generating material ( 3 ) having an integrated electrical resistance heating element ( 2 ), so that the aerosol generating material may be heated in direct contact with the electrical resistance heating element, wherein the aerosol generating material is provided as a unitary structure and/or coating which may be heated to generate multiple deliveries of an inhalable aerosol and/or gas. There is also provided a method for fabricating the device. There is also provided the use of the device and the use of the aerosol generating material, to generate an inhalable aerosol and/or gas.

First claim

The invention claimed is:

1. A device for generating at least one of an inhalable aerosol or a gas, the device comprising:
an aerosol generating material having an integrated electrical resistance heating element, wherein the electrical resistance heating element is at least partially embedded in or coated by the aerosol generating material, so that the aerosol generating material may be heated in direct contact with the electrical resistance heating element, wherein the aerosol generating material is provided as at least one of a unitary structure or a coating which may be heated to generate multiple deliveries of at least one of an inhalable aerosol or a gas;
wherein the aerosol generating material is a cast or extruded material.

2. A device according to claim 1 , wherein the aerosol generating material comprises nicotine.

3. A device according to claim 1 , wherein at least part of the electrical resistance heating element is in the form of a mesh or a coil.

4. A device according to claim 1 , wherein the aerosol generating material may be repeatedly heated by the heating element to generate deliveries of inhalable aerosol or gas.

5. A device according to claim 1 , wherein the aerosol generating material comprises an aerosol generating agent.

6. A device according to claim 1 , wherein the aerosol generating material comprises tobacco material.

7. A device according to claim 1 , wherein the aerosol generating material comprises an inorganic filler material.

8. A device according to claim 1 , wherein the aerosol generating material comprises a binder.

9. A device according to claim 1 , wherein at least part of the aerosol generating material is at least partially surrounded by the electrical resistance heating element.

10. A device according to claim 1 , wherein a first portion of the aerosol generating material may be heated independently from a second portion of the aerosol generating material by the electrical resistance heating element.

11. A device according to claim 10 , wherein the first portion and the second portion have different chemical compositions.

12. A device according to claim 1 , wherein at least one portion of the aerosol generating material must be moved from a first position to a second position in order to be heated by the electrical resistance heating element.

13. A device according to claim 1 , wherein the heating of the aerosol generating material by the electrical resistance heating element is to be initiated or controlled by the user of the device.

14. A device according to claim 1 , wherein the device is a heat-not-burn device.

15. A method for fabricating a device for generating at least one of an inhalable aerosol or a gas according to claim 1 , wherein the method comprises applying a slurry of aerosol generating material to an electrical resistance heating element.

16. A method according to claim 15 , wherein the slurry is applied by casting the slurry onto the electrical resistance heating element.

17. A method according to claim 15 , wherein the slurry is applied by dipping the electrical resistance heating element into the slurry.

18. A method according to claim 15 , wherein the slurry is extruded with or onto the electrical resistance heating element.

19. Use of a device according to claim 1 for the generation of at least one of an aerosol or a gas comprising nicotine.

20. Use of an aerosol generating material as defined in claim 1 for the generation of at least one of an aerosol or a gas comprising nicotine by heating the material in direct contact with an electrical resistance heating element.

21. A composite structure comprising:
an electrical resistance heating element, which is at least partially embedded in, or coated by, an aerosol generating material, wherein the material is in direct contact with the electrical resistance heating element and may be heated to generate multiple deliveries of at least one of an inhalable aerosol or a gas,
wherein the aerosol generation material is a cast or extruded material.

22. A composite structure as claimed in claim 21 , wherein the electrical resistance heating element is a mesh.

23. A composite structure as claimed in claim 21 , wherein the structure may be moved to heat different portions of the structure.

24. A composite structure as claimed in claim 21 , wherein different portions of the structure may be heated independently by separate power sources or by switching the supply of power from one portion to another.

25. A composite structure as claimed in claim 21 , wherein the composite structure is in the form of an elongate ribbon or band.

26. A composite structure as claimed in claim 21 , wherein the aerosol generating material is provided as a unitary structure or a coating and comprises nicotine.

27. An article comprising a composite structure as claimed in claim 21 , and a means for moving the composite structure to allow different portions thereof to be heated.

28. An article as claimed in claim 27 , wherein the composite structure is in the form of an elongate ribbon or band and the means for moving the composite structure is a spool.

Assignees

• British American Tobacco Investments Ltd

Inventors

• John Edward
• Symonds Jason
• Aoun Walid Abi

Classifications

• A24B15/16

  of tobacco substitutes · CPC title

• A24B15/167

  in liquid or vaporisable form, e.g. liquid compositions for electronic cigarettes · CPC title

• B05D7/24

  for applying particular liquids or other fluent materials · CPC title

• A61M15/06

  Inhaling appliances shaped like cigars, cigarettes or pipes · CPC title

• H05B3/10

  Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor · CPC title