Tobacco-containing smoking article

Patent metadata

Field	Value
Publication number	US-11980220-B2
Application number	US-202117387388-A
Country	US
Kind code	B2
Filing date	Jul 28, 2021
Priority date	Oct 18, 2006
Publication date	May 14, 2024
Grant date	May 14, 2024

Abstract

A smoking article may include a cigarette incorporated within an electrically powered aerosol generating device that acts as a holder for that cigarette. The smoking article possesses at least one form of tobacco. The smoking article also possesses a mouth-end piece that is used by the smoker to inhale components of tobacco that are generated by the action of heat upon components of the cigarette. A representative smoking article possesses an outer housing incorporating a source of electrical power (e.g., a battery), a sensing mechanism for powering the device at least during periods of draw, and a heating device (e.g., at least one electrical resistance heating element) for forming a thermally generated aerosol that incorporates components of tobacco. During use, the cigarette is positioned within the device, and after use, the used cigarette is removed from the device and replaced with another cigarette.

First claim

What is claimed:

1. A method for control of aerosol generation by an aerosol generating smoking article, the method comprising:
detecting a draw of air through at least a portion of the aerosol generating smoking article using one or more control components; and
controlling passage of an electrical current from an electrical power source to an electrical resistance heater based on a property of the draw of air that is detected such that operation of the electrical resistance heater varies based on the property of the draw of air that is detected;
wherein controlling passage of the electrical current from the electrical power source to the electrical resistance heater comprises controlling an amount of the electrical current that is supplied to the electrical resistance heater based on the property of the draw of air that is detected.

2. The method of claim 1 , wherein operation of the electrical resistance heater varies based on a period of the draw of air through at least a portion of the aerosol generating smoking article.

3. The method of claim 1 , wherein operation of the electrical resistance heater varies based on a magnitude of the draw of air through at least a portion of the aerosol generating smoking article.

4. The method of claim 1 , wherein operation of the electrical resistance heater varies based on both of a period and a magnitude of the draw of air through at least a portion of the aerosol generating smoking article.

5. The method of claim 1 , wherein the detecting comprises detecting a strength of the draw of air through at least a portion of the aerosol generating smoking article.

6. The method of claim 5 , wherein controlling passage of the electrical current from the electrical power source to the electrical resistance heater comprises adjusting an amount of the electrical current that is supplied to the electrical resistance heater so as to substantially correspond to the strength of the draw of air through at least a portion of the aerosol generating smoking article.

7. The method of claim 1 , wherein the one or more control components comprises a sensor and optionally a threshold detector.

8. The method of claim 1 , wherein the method comprises delivering current for a timed period to produce a quantity of heat from the electrical resistance heater and also controlling passage of the electrical current from the electrical power source to the electrical resistance heater such that heat generation by the electrical resistance heater is substantially proportional to a remaining period of the draw of air.

Assignees

• Rai Strategic Holdings Inc

Inventors

• Robinson John Howard
• Griffith Jr David William
• Conner Billy Tyrone
• Crooks Evon Llewellyn
• Brewer Jr Dempsey Bailey

Classifications

• A24F40/485

  Valves; Apertures · CPC title

• A24F40/40

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

• A24B3/14 Primary

  Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products (delustering A24C1/40) · CPC title

• A24B13/02

  Flakes or shreds of tobacco · CPC title

• A24B15/12

  of reconstituted tobacco · CPC title