Aerosol provision article

Patent metadata

Field	Value
Publication number	US-11672276-B2
Application number	US-201716346940-A
Country	US
Kind code	B2
Filing date	Oct 27, 2017
Priority date	Nov 2, 2016
Publication date	Jun 13, 2023
Grant date	Jun 13, 2023

Abstract

There is described an aerosol provision article for use with an aerosol provision device for generating an inhalable medium including an aerosol. The aerosol provision article includes a first chamber for containing a first substance that is heatable to generate an aerosol; a conduit that extends through the first chamber, the conduit having an inlet through which aerosol generated from the first substance can enter the conduit and an outlet through which the aerosol can exit the conduit and a second chamber for receiving a second substance, wherein the second chamber is downstream of the outlet of the conduit. The article is arranged such that in use aerosol exiting the outlet of the conduit passes through the second substance received in the second chamber, and wherein the cross-sectional area of the conduit increases at or towards the outlet.

First claim

The invention claimed is:

1. An aerosol provision article for use with an aerosol provision device for generating an inhalable medium comprising an aerosol, the aerosol provision article comprising:
a first chamber for containing a first substance that is heatable to generate an aerosol, wherein the first substance is a liquid;
a conduit that extends through the first chamber, the conduit having an inlet through which aerosol generated from the first substance can enter the conduit and an outlet through which the aerosol can exit the conduit, wherein the conduit comprises a first section that tapers from the outlet towards the inlet;
a second chamber for receiving a second substance, wherein the second chamber is downstream of the outlet of the conduit, the aerosol provision article being arranged such that in use aerosol exiting the outlet of the conduit passes through the second substance received in the second chamber, and wherein a cross-sectional area of the conduit increases at or towards the outlet; and
a wick for wicking the first substance out of the first chamber in use.

2. The aerosol provision article according to claim 1 , wherein the cross-sectional area of the conduit at the outlet is greater than the cross-sectional area of any other section of the conduit.

3. The aerosol provision article according to claim 1 , wherein the first chamber is substantially annular.

4. The aerosol provision article according to claim 1 , wherein the second chamber is in a proximal end of the aerosol provision article.

5. The aerosol provision article according to claim 1 , further comprising a heater associated with the first chamber for volatilizing the liquid held in the first chamber in use.

6. The aerosol provision article according to claim 1 , wherein the first chamber has one or more apertures to allow liquid to exit the first chamber.

7. The aerosol provision article according to claim 1 , wherein the first chamber and the conduit are molded as an integral component.

8. The aerosol provision article according to claim 1 , wherein the second chamber contains the second substance and the second substance is a solid material.

9. The aerosol provision article according to claim 8 , wherein the solid material is or comprises tobacco.

10. The aerosol provision article to claim 1 , wherein a cross-sectional area of the outlet of the conduit is at least 70% of a cross-sectional area of the second chamber.

11. An aerosol provision article for use with an aerosol provision device for generating an inhalable medium comprising an aerosol, the aerosol provision article comprising:
a first chamber for containing a first substance that is heatable to generate an aerosol, wherein the first substance is a liquid;
a conduit that extends through the first chamber, the conduit having an inlet through which aerosol generated from the first substance can enter the conduit and an outlet through which the aerosol can exit the conduit, wherein the conduit comprises a first section that tapers from the outlet towards the inlet; and
a second chamber for receiving a second substance, wherein the second chamber is downstream of the outlet of the conduit, the aerosol provision article being arranged such that in use aerosol exiting the outlet of the conduit passes through the second substance received in the second chamber, and wherein a cross-sectional area of the conduit increases at or towards the outlet,
wherein:
the first section tapers from the outlet to a first point along the conduit at a first rate and the conduit comprises a second section that tapers from the first point towards the inlet at a second rate that is lower than the first rate, or

the first section tapers from the outlet towards a first point along the conduit at a first rate and the conduit comprises a second section that extends from the first point towards the inlet and has a substantially constant width.

12. A system comprising:
an aerosol provision device for generating an inhalable medium comprising an aerosol, the aerosol provision device having a battery section; and
an aerosol provision article for use with the aerosol provision device, the aerosol provision article comprising:
a first chamber for containing a first substance that is heatable to generate an aerosol, wherein the first substance is a liquid;
a conduit that extends through the first chamber, the conduit having an inlet through which aerosol generated from the first substance can enter the conduit and an outlet through which the aerosol can exit the conduit, wherein the conduit comprises a first section that tapers from the outlet towards the inlet; and
a second chamber for receiving a second substance, wherein the second chamber is downstream of the outlet of the conduit, the aerosol provision article being arranged such that in use aerosol exiting the outlet of the conduit passes through the second substance received in the second chamber, and wherein a cross-sectional area of the conduit increases at or towards the outlet,

wherein the aerosol provision article is connectable to the aerosol provision device.

13. An aerosol provision device for generating an inhalable medium comprising an aerosol, the aerosol provision device comprising:
a first chamber for containing a first substance that is heatable to generate an aerosol, wherein the first substance is a liquid;
a conduit that extends through the first chamber, the conduit having an inlet through which aerosol generated from the first substance can enter the conduit and an outlet through which the aerosol can exit the conduit, wherein the conduit comprises a first section that tapers from the outlet towards the inlet;
a second chamber for receiving a second substance, wherein the second chamber is downstream of the outlet of the conduit, the aerosol provision device being arranged such that in use aerosol exiting the outlet of the conduit passes through the second substance received in the second chamber, and wherein a cross-sectional area of the conduit increases at or towards the outlet; and
a wick for wicking the first substance out of the first chamber in use.

14. The aerosol provision device according to claim 13 , wherein the cross-sectional area of the conduit at the outlet is greater than the cross-sectional area of any other section of the conduit.

15. The aerosol provision device according to claim 13 , wherein the first chamber is substantially annular.

16. The aerosol provision device according to claim 13 , wherein the second chamber is in a proximal end of the aerosol provision device.

17. The aerosol provision device according to claim 13 , further comprising a heater associated with the first chamber for volatilizing the first substance held in the first chamber in use.

18. The aerosol provision device according to claim 13 , wherein the first chamber has one or more apertures to allow the first substance to exit the first chamber.

19. The aerosol provision device according to claim 13 , wherein the first chamber and the conduit are molded as an integral component.

20. The aerosol provision device according to claim 13 , wherein the second chamber contains the second substance and the second substance is a solid material.

21. The aerosol provision device according to claim 20 , wherein the solid material is or comprises tobacco.

22. The aerosol provision device according to claim 13 , wherein a cross-sectional area of the outlet of the conduit is at least 70% of a cross-

Assignees

• British American Tobacco Investments Ltd

Inventors

• Yilmaz Ugurhan
• Woodcock Dominic

Classifications

• A24F40/30 Primary

  Devices using two or more structurally separated inhalable precursors, e.g. using two liquid precursors in two cartridges · CPC title

• A24F40/10

  Devices using liquid inhalable precursors · CPC title

• A24B15/167

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

• A24F40/40 Primary

  Constructional details, e.g. connection of cartridges and battery parts · CPC title

• A24F40/20

  Devices using solid inhalable precursors · CPC title