Smoking articles and use thereof for yielding inhalation materials

• US 10,362,809 B2
• Filed: 11/07/2018
• Issued: 07/30/2019
• Est. Priority Date: 08/09/2011
• Status: Active Grant

• Current Assignee: RAI STRATEGIC HOLDINGS, INC. (British American Tobacco PLC)
• Original Assignee: RAI STRATEGIC HOLDINGS, INC. (British American Tobacco PLC)
• Inventors: Worm, Steven L., Christopherson, David Glen, Sears, Stephen Benson, Potter, Dennis Lee, Ampolini, Frederic Philippe, Ademe, Balager
• Primary Examiner(s): Cordray, Dennis R
• Application Number:
  US16/183,418
• Publication Number:
  US 20190075848A1
• Time in Patent Office: 265 Days
• Field of Search: None
• CPC Class Codes: A24F 40/10 Devices using liquid inhalable precursors
• CPC Class Codes: A24F 40/20 Devices using solid inhalable precursors
• CPC Class Codes: A24F 40/40 Constructional details, e.g. connection of cartridges and battery parts
• CPC Class Codes: A24F 40/42 Cartridges or containers for inhalable precursors
• CPC Class Codes: A24F 40/46 Shape or structure of electric heating means
• CPC Class Codes: A24F 40/50 Control or monitoring

Abstract

The present invention describes articles, such as smoking articles, that can provide an inhalable substance in a form suitable for inhalation by a consumer. The article comprises a cartridge with an inhalable substance medium therein, control housing that includes an electrical energy source and an electrical power source, and a heating member that may be located in either the cartridge or the control housing. The control housing further may include puff-actuated current actuation components and current regulation components.

Claims

1. A smoking article comprising:

a cartridge body having a mouth end and an engaging end opposite the mouth end, the cartridge body including therein;

storage for an inhalable substance;

a resistive heating element; and

a first electrical contact coupled with the resistive heating element; and

a control housing having a receiving chamber with an open end defined by a wall with an inner surface and an outer surface, the control housing including;

a power source;

a puff-actuated sensor; and

a second electrical contact electrically coupled with the power source;

wherein the receiving chamber is configured to receive the engaging end of the cartridge such that the first electrical contact makes an electrical connection with the second electrical contact and electrical current can be provided from the power source to the resistive heating element so as to heat the inhalable substance to form an aerosol in response to the puff-actuated sensor sensing draw on the mouth end by a user of the smoking article;

wherein the control housing is configured for allowing entry of ambient air into the receiving chamber for passage into the cartridge body;

wherein the wall of the receiving chamber of the control housing comprises at least one opening therein; and

wherein the at least one opening in the wall of the receiving chamber of the control housing is configured so that a portion of the cartridge body is visible therethrough.

2. The smoking article of claim 1, wherein the at least one opening in the wall of the receiving chamber of the control housing is configured to allow entry of the ambient air into the receiving chamber.

3. The smoking article of claim 1, wherein the second electrical contact comprises a projection extending into the chamber.

4. The smoking article of claim 1, wherein the inhalable substance comprises a polyhydric alcohol.

5. The smoking article of claim 4, wherein the inhalable substance comprises glycerin.

6. The smoking article of claim 4, wherein the inhalable substance comprises propylene glycol.

7. The smoking article of claim 4, wherein the inhalable substance comprises a mixture of glycerin and propylene glycol.

8. The smoking article of claim 1, wherein the inhalable substance comprises a tobacco-derived material.

9. The smoking article of claim 1, wherein the power source comprises a rechargeable battery.

10. The smoking article of claim 1, wherein the resistive heating element has a working temperature of about 120°

C. to about 300°

C.

11. The smoking article of claim 1, wherein the smoking article is configured for a USB connection.

12. The smoking article of claim 11, wherein the smoking article is configured to connect to a computer through the USB connection.

13. The smoking article of claim 1, wherein when the engaging end of the cartridge is received in the receiving chamber of the control housing, a portion of the cartridge sized for insertion into the mouth of a user remains outside of the control housing.

14. The smoking article of claim 1, wherein the receiving chamber comprises one or more of a detent or a projection that engages a surface of the cartridge body when the engaging end of the cartridge body is inserted into the receiving chamber of the control housing.

15. The smoking article of claim 1, wherein the control housing comprises an indicator light.

16. The smoking article of claim 15, wherein the control housing is configured for activating the indicator light in response to a draw on the cartridge of the smoking article.

17. The smoking article of claim 15, wherein the control housing is configured for activating the indicator light when the engaging end of the cartridge body is received into the receiving chamber of the control housing.

18. The smoking article of claim 15, wherein the control housing is configured to activate the indicator light when electrical current is flowing from the power source to the resistive heating element.

19. The smoking article of claim 1, wherein the smoking article comprises a current regulating component that is configured to regulate a current flow from the electrical energy source to the resistive heating member.

20. The smoking article of claim 19, wherein the current regulating component is a time-based component.

21. The smoking article of claim 19, wherein the current regulating component is configured to provide electrical current from the power source to the resistive heating element for up to a maximum period of time in response to the puff-actuated sensor sensing a draw on the mouth end of the cartridge body by a user of the smoking article.