RESERVOIR HOUSING FOR AN ELECTRONIC SMOKING ARTICLE

• US 20150144145A1
• Filed: 11/22/2013
• Published: 05/28/2015
• Est. Priority Date: 11/22/2013
• Status: Active Grant

• Current Assignee: RAI STRATEGIC HOLDINGS, INC. (British American Tobacco PLC)
• Original Assignee: R J Reynolds Tobacco Company (R. J. Reynolds Tobacco)
• Inventors: Sears, Stephen Benson, Collett, William Robert, Williams, Karen V., Chang, Yi-ping
• Granted Patent: US 9,839,237 B2
• Time in Patent Office: Days
• US Class Current: 131/328
• CPC Class Codes: A24F 40/10 Devices using liquid inhalable precursors
• CPC Class Codes: A24F 40/42 Cartridges or containers for inhalable precursors
• CPC Class Codes: A24F 40/44 Wicks
• CPC Class Codes: A24F 40/46 Shape or structure of electric heating means

Abstract

The present disclosure provides an electronic smoking article including components adapted for retaining an aerosol precursor composition. The electronic smoking article can comprise a shell having a reservoir housing therein. The reservoir housing can be adapted for enclosing an aerosol precursor composition and can comprise one or more apertures through which a liquid transport element may extend out of and into an interior space within the reservoir housing. The electronic smoking article further can comprise a heating element in heating communication with the liquid transport element. The disclosure also provides a method for forming a reservoir for an electronic smoking article.

Claims

1. An electronic smoking article comprising:

a hollow shell;

one or more reservoir housings within the hollow shell;

a liquid transport element having a portion that is exposed within the hollow shell;

an aerosol precursor composition within the one or more reservoir housings; and

a heating element in heating communication with the exposed portion of the liquid transport element;

wherein the portions of the liquid transport element distal from the heating element extend into the one or more reservoir housings so as to be in contact with the aerosol precursor composition.

2. The electronic smoking article according to claim 1, wherein the one or more reservoir housings are impermeable to the aerosol precursor composition.

3. The electronic smoking article according to claim 1, wherein the one or more reservoir housings are metallic, ceramic, glass, polymeric, or a combination thereof.

4. The electronic smoking article according to claim 1, wherein the one or more reservoir housings are adapted to prevent loss of the aerosol precursor composition therefrom other than via the liquid transport element.

5. The electronic smoking article according to claim 1, wherein the liquid transport element comprises a fibrous material.

6. The electronic smoking article according to claim 1, wherein the liquid transport element comprises a capillary tube.

7. The electronic smoking article according to claim 1, wherein the heating element comprises a resistive heating wire.

8. The electronic smoking article according to claim 1, wherein the heating element comprises a microheater.

9. The electronic smoking article according to claim 1, wherein the one or more reservoir housings comprise a hollow-walled cylinder with a central opening therethrough, and wherein the aerosol precursor composition is within the hollow walls of the cylinder.

10. The electronic smoking article according to claim 9, comprising a first aperture at a first position at a first end of the hollow wall, and a second aperture at a second position at the first end of the hollow wall.

11. The electronic smoking article according to claim 10, wherein the liquid transport element extends out of the first aperture and into the second aperture.

12. The electronic smoking article according to claim 11, further comprising a sealing adapter in combination with one or both of the apertures.

13. The electronic smoking article according to claim 11, wherein the heating element is in heating communication with the liquid transport element between the first aperture and the second aperture.

14. The electronic smoking article according to claim 13, comprising an air flow passage through the central opening of the cylinder and across the heating element, wherein the air flow passage is uniaxial with the reservoir housing.

15. The electronic smoking article according to claim 13, wherein the air flow passage and the reservoir housing are uniaxial with the hollow shell.

16. The electronic smoking article according to claim 1, comprising a reservoir housing that includes a first aperture at a first end thereof and a second aperture at a second end thereof.

17. The electronic smoking article according to claim 16, wherein the first end and the second end of the reservoir housing are both positioned proximate the same end of the hollow shell.

18. The electronic smoking article according to claim 16, wherein the liquid transport element extends out of the first aperture and into the second aperture.

19. The electronic smoking article according to claim 18, wherein the heating element is in heating communication with the liquid transport element between the first aperture and the second aperture.

20. The electronic smoking article according to claim 18, further comprising a sealing adapter in combination with one or both of the apertures.

21. The electronic smoking article according to claim 1, wherein the one or more reservoir housings comprises a housing that includes two sections in a clam shell configuration.

22. The electronic smoking article according to claim 1, comprising a first reservoir housing and a second reservoir housing.

23. The electronic smoking article according to claim 22, wherein the liquid transport element extends out of a first aperture in the first reservoir housing and extends into a second aperture into the second reservoir housing.

24. The electronic smoking article according to claim 23, further comprising a sealing adapter in combination with one or both of the apertures.

25. The electronic smoking article according to claim 23, wherein the heating element is in heating communication with the liquid transport element between the aperture of the first reservoir housing and the aperture of the second reservoir housing.

26. The electronic smoking article according to claim 25, comprising an air flow passage between the first reservoir housing and the second reservoir housing and across the heating element, wherein the air flow passage is uniaxial with the first reservoir housing and the second reservoir housing.

27. The electronic smoking article according to claim 1, further comprising a porous media inside the one or more reservoir housings, the porous media being adapted to retain the aerosol precursor composition.

28. A method for forming a reservoir for an electronic smoking article, the method comprising:

a. providing a reservoir housing formed of two sections in a clam shell configuration, the reservoir housing comprising first and second ends and comprising first and second apertures;

b. engaging the first section of the clam shell reservoir housing with the second section of the clam shell reservoir housing to provide the completed housing comprising first and second apertures;

c. at least partially filling a cavity of the reservoir housing or a section thereof with an aerosol precursor composition; and

d. combining a liquid transport element with the reservoir housing;

wherein a portion of the liquid transport element is interior to the completed reservoir housing, and the liquid transport element extends through the first aperture out of the completed reservoir housing and through the second aperture into the completed reservoir housing; and

wherein steps b though d can be executed in any order.

29. The method according to claim 28, further comprising adding a porous media to the reservoir housing or a section thereof.

30. The method according to claim 29, wherein at least partially filling a cavity of the reservoir housing or a section thereof with the aerosol precursor composition comprises adding the aerosol precursor composition to the porous media.