Aerosol generating material and devices including the same

Patent metadata

Field	Value
Publication number	US-11478016-B2
Application number	US-201916352365-A
Country	US
Kind code	B2
Filing date	Mar 13, 2019
Priority date	Nov 15, 2013
Publication date	Oct 25, 2022
Grant date	Oct 25, 2022

Abstract

There is provided a device for generating an inhalable aerosol or gas, the device including an aerosol generating material having an integrated electrical resistance heating element, so that the aerosol generating material may be heated in direct contact with the electrical resistance heating element, wherein the aerosol generating material is provided as a unitary structure or coating which may be heated to generate multiple deliveries of an inhalable aerosol or gas. There is also provided a method for fabricating the device. There is also provided the use of the device and the use of the aerosol generating material, to generate an inhalable aerosol or gas.

First claim

The invention claimed is:

1. A device for generating an inhalable aerosol or gas, the device comprising:
an aerosol generating material having an integrated electrical resistance heating element at least partially embedded therein, so that the aerosol generating material may be heated in direct contact with the electrical resistance heating element,
wherein the aerosol generating material is provided as a unitary structure or coating which may be heated to generate multiple deliveries of an inhalable aerosol or gas,
wherein the aerosol generating material is a cast or extruded material, and
wherein at least part of the electrical resistance heating element is in the form of a mesh.

2. The device according to claim 1 , wherein the aerosol generating material comprises nicotine.

3. The device according to claim 1 , wherein the aerosol generating material comprises an aerosol generating agent.

4. The device according to claim 1 , wherein the aerosol generating material comprises tobacco material.

5. The device according to claim 1 , wherein the aerosol generating material comprises an inorganic filler material.

6. The device according to claim 1 , wherein the aerosol generating material comprises a binder.

7. The device according to claim 1 , wherein at least part of the aerosol generating material is at least partially surrounded by the electrical resistance heating element.

8. The device according to claim 1 , wherein a first portion of the aerosol generating material may be heated independently from a second portion of the aerosol generating material by the electrical resistance heating element.

9. The device according to claim 8 , wherein the first portion and the second portion have different chemical compositions.

10. The device according to claim 1 , wherein at least one portion of the aerosol generating material must be moved from a first position to a second position in order to be heated by the electrical resistance heating element.

11. The device according to claim 1 , wherein the heating of the aerosol generating material by the electrical resistance heating element is to be initiated or controlled by the user of the device.

12. The device according to claim 1 , wherein the device is a heat-not-burn device.

13. A method for fabricating a device for generating an inhalable aerosol or gas, the device comprising an aerosol generating material having an integrated electrical resistance heating element at least partially embedded therein, so that the aerosol generating material may be heated in direct contact with the electrical resistance heating element, and wherein the aerosol generating material is provided as a unitary structure or coating which may be heated to generate multiple deliveries of an inhalable aerosol or gas, the method comprising:
applying a slurry of aerosol generating material to an electrical resistance heating element, wherein the slurry is applied by one of:
casting the slurry onto the electrical resistance heating element, or
extruding the slurry with or onto the electrical resistance heating element;

wherein at least part of the electrical resistance heating element is in the form of a mesh.

14. Use of a device according to claim 1 for the generation of an aerosol or gas comprising nicotine.

15. A composite structure comprising:
an electrical resistance heating element which is at least partially embedded in, or coated by, an aerosol generating material,
wherein the aerosol generating material:
is in direct contact with the electrical resistance heating element and may be heated to generate multiple deliveries of an inhalable aerosol or gas,
is a cast or extruded material,
has an integrated electrical resistance heating element at least partially embedded therein, so that the aerosol generating material may be heated in direct contact with the electrical resistance heating element, and
is provided as a unitary structure or coating which may be heated to generate multiple deliveries of an inhalable aerosol or gas; and

wherein at least part of the electrical resistance heating element is in the form of a mesh.

16. The composite structure as claimed in claim 15 , wherein at least one of:
the composite structure may be moved to heat different portions of the structure;
different portions of the structure may be heated independently by separate power sources or by switching the supply of power from one portion to another; or
the composite structure is in the form of an elongate ribbon or band.

17. An article comprising the composite structure as claimed in claim 15 , and means for moving the composite structure to allow different portions of the composite structure to be heated.

18. The article as claimed in claim 17 , wherein the composite structure is in the form of an elongate ribbon or band and the means for moving the composite structure is a spool.

Assignees

• British American Tobacco Investments Ltd
• Nicoventures Trading Ltd

Inventors

• John Edward
• Symonds Jason
• Aoun Walid Abi

Classifications

• A61M15/06

  Inhaling appliances shaped like cigars, cigarettes or pipes · CPC title

• A24F40/20

  Devices using solid inhalable precursors · CPC title

• A24F40/10

  Devices using liquid inhalable precursors · CPC title

• A24F47/00

  Smokers' requisites not otherwise provided for · CPC title

• A61M2205/8206

  battery-operated · CPC title