Electronic smoking article and associated method

• US 11,019,852 B2
• Filed: 01/13/2020
• Issued: 06/01/2021
• Est. Priority Date: 10/08/2012
• Status: Active Grant

• Current Assignee: RAI STRATEGIC HOLDINGS, INC. (British American Tobacco PLC)
• Original Assignee: RAI STRATEGIC HOLDINGS, INC. (British American Tobacco PLC)
• Inventors: Sears, Stephen Benson, Nestor, Timothy Brian, Novak, III, Charles Jacob, Alderman, Steven Lee, Galloway, Michael Ryan, Guenther, Jr., Quentin Paul, Ampolini, Frederic Philippe, Henry, Jr., Raymond C., East, Allen Michael
• Primary Examiner(s): Yaary, Eric
• Application Number:
  US16/741,355
• Publication Number:
  US 20200146347A1
• Time in Patent Office: 505 Days
• CPC Class Codes: A24F 40/00 Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
• CPC Class Codes: A24F 40/10 Devices using liquid inhalable precursors
• CPC Class Codes: A24F 40/40 Constructional details, e.g. connection of cartridges and battery parts
• CPC Class Codes: A24F 40/50 Control or monitoring
• CPC Class Codes: A24F 40/53 Monitoring, e.g. fault detection
• CPC Class Codes: A24F 40/60 Devices with integrated user interfaces

Abstract

Smoking articles, and methods for forming such smoking articles, such as an electronic smoking article, are provided. An exemplary smoking article comprises a control body portion having a control body engagement end, and having a first control component therein. A cartridge body portion includes a cartridge body engagement end configured to removably engage the control body engagement end of the control body portion. The cartridge body portion further includes a consumable arrangement comprising at least an aerosol precursor composition and at least one heating element operably engaged therewith, and a second control component. At least the consumable arrangement is configured to be in communication with the first control component upon engagement between the cartridge body and control body portions.

Claims

1. A smoking article comprising:

a control body portion having a control body engagement portion, the control body portion including an electrical power source, and a first control component configured to control a flow of electrical current from the electrical power source to a load; and

a cartridge body portion including a cartridge body engagement portion configured to removably engage the control body engagement portion, a reservoir configured to store an aerosol precursor composition, and a second control component configured to communicate with the first control component upon engagement between the cartridge body and control body portions,

wherein the second control component is configured to determine a remaining amount of the aerosol precursor composition in the reservoir, and communicate the remaining amount of the aerosol precursor composition to the first control component, and the first control component is configured to control the flow of electrical current from the electrical power source based on the remaining amount of the aerosol precursor composition as determined by the second control component.

2. The smoking article of claim 1, wherein the cartridge body portion further includes a sensor operably engaged with the reservoir to determine the remaining amount of the aerosol precursor composition in the reservoir, or a quantity of the aerosol precursor composition flowing from the reservoir, and

wherein the second control component configured to determine the remaining amount of the aerosol precursor composition in the reservoir comprises the second control component configured to monitor the sensor at a first time and at a second time.

3. The smoking article of claim 1, wherein the cartridge body portion further includes a sensor to determine a saturation level of a wick in fluid communication with the reservoir, and

wherein the second control component configured to determine the remaining amount of the aerosol precursor composition in the reservoir comprises the second control component configured to monitor the saturation level of the wick by way of the sensor.

4. The smoking article of claim 1, wherein the second control component configured to determine the remaining amount of the aerosol precursor composition in the reservoir comprises the second control component configured to monitor a number of puffs on the smoking article by a user, and for each puff, a duration or a volume of aerosol precursor composition consumed.

5. The smoking article of claim 1, wherein the cartridge body portion further includes a heating element, and the first control component configured to control the flow of the electrical current from the electrical power source based on the remaining amount of the aerosol precursor composition comprises the first control component configured to prevent the flow of the electrical current from passing through to the heating element.

6. The smoking article of claim 1, wherein the first control component is further configured to control a status indicator based on the remaining amount of the aerosol precursor composition.

7. The smoking article of claim 1, wherein the first control component is configured to activate a communication device to transmit data to a location external to the smoking article based on the remaining amount of the aerosol precursor composition.

8. A cartridge comprising:

a cartridge body engagement portion configured to removably engage a control body to thereby form a smoking article, the control body having a first control component;

a reservoir configured to store an aerosol precursor composition;

a second control component configured to determine a remaining amount of the aerosol precursor composition in the reservoir and to communicate an indication of the remaining amount of the aerosol precursor composition in the reservoir to the first control component upon engagement between the cartridge body engagement portion and the control body; and

a memory device in communication with the second control component, and configured to store a determination of the remaining amount of the aerosol precursor composition.

9. The cartridge of claim 8, wherein the cartridge further includes a sensor operably engaged with the reservoir to determine the remaining amount of the aerosol precursor composition in the reservoir, or a quantity of the aerosol precursor composition flowing from the reservoir, and

wherein the second control component configured to determine the remaining amount of the aerosol precursor composition in the reservoir comprises the second control component configured to monitor the sensor at a first time and at a second time.

10. The cartridge of claim 8, wherein cartridge further includes a sensor to determine a saturation level of a wick in fluid communication with the reservoir, and

wherein the second control component configured to determine the remaining amount of the aerosol precursor composition in the reservoir comprises the second control component configured to monitor the saturation level of the wick by way of the sensor.

11. The cartridge of claim 8, wherein the second control component configured to determine a remaining amount of the aerosol precursor composition in the reservoir comprises the second control component configured to monitor a number of puffs on the smoking article by a user, and for each puff, a duration or a volume of aerosol precursor composition consumed.

12. A method of forming a smoking article comprising:

removably engaging a control body engagement portion of a control body portion with a cartridge body engagement portion of a cartridge body portion, wherein the control body portion includes an electrical power source and a first control component configured to control a flow of electrical current from the electrical power source to a load, and the cartridge body portion includes a reservoir configured to store an aerosol precursor composition and a second control component configured to communicate with the first control component upon engagement between the cartridge body and control body portions;

determining a remaining amount of the aerosol precursor composition in the reservoir;

communicating the remaining amount of the aerosol precursor composition in the reservoir from the second control component to the first control component; and

controlling the flow of electrical current from the electrical power source based on the remaining amount of the aerosol precursor composition.

13. The method of claim 12, wherein determining the remaining amount of the aerosol precursor composition in the reservoir comprises the second control component monitoring a sensor operatively engaged with the reservoir at a first time and at a second time to determine the remaining amount of the aerosol precursor composition in the reservoir, or a quantity of the aerosol precursor composition flowing from the reservoir.

14. The method of claim 13, wherein the sensor determines a saturation level of a wick in fluid communication with the reservoir and determining the remaining amount of the aerosol precursor composition in the reservoir comprises the second control component monitoring the saturation level of the wick by way of the sensor.

15. The method of claim 12, wherein determining the remaining amount of the aerosol precursor composition in the reservoir comprises the second control component:

monitoring a number of puffs on the smoking article by a user, and for each puff, a duration or a volume of aerosol precursor composition consumed.

16. The method of claim 12, wherein the cartridge body portion further includes a heating element, and the first control component controlling the flow of the electrical current from the electrical power source based on the remaining amount of the aerosol precursor composition comprises preventing the flow of the electrical current from passing through to the heating element.

17. The method of claim 12, further comprising activating a status indicator based on the remaining amount of the aerosol precursor composition.

18. The method of claim 12, further comprising activating a communication device and transmitting data to a location external to the smoking article based on the remaining amount of the aerosol precursor composition.