Heat-not-burn (HNB) aerosol-generating devices and capsules

Patent metadata

Field	Value
Publication number	US-12349728-B2
Application number	US-202418440298-A
Country	US
Kind code	B2
Filing date	Feb 13, 2024
Priority date	Jan 18, 2021
Publication date	Jul 8, 2025
Grant date	Jul 8, 2025

Abstract

A capsule may include a housing, an aerosol-forming substrate, and a heater. The housing defines inlet openings, outlet openings, and a chamber between the inlet openings and the outlet openings. The chamber may have a longest dimension extending from at least one of the inlet openings to a corresponding one of the outlet openings. The aerosol-forming substrate is within the chamber of the housing. The heater is embedded in the housing. The heater includes a first end section, an intermediate section, and a second end section. The intermediate section is disposed within the aerosol-forming substrate in the chamber. An aerosol-generating device may include a device body with a lid configured to open to permit an insertion of the capsule and configured to close to engage the capsule within the device body.

First claim

The invention claimed is:

1. A capsule for an aerosol-generating device, comprising:
a housing defining inlet openings, outlet openings, and a chamber between the inlet openings and the outlet openings;
an aerosol-forming substrate within the chamber of the housing; and
a heater in an upstream portion of the housing adjacent to the inlet openings, the upstream portion of the housing defining the inlet openings and an alignment recess.

2. The capsule of claim 1 , wherein the housing has a longitudinal axis, and a longest dimension of the chamber extends along the longitudinal axis of the housing.

3. The capsule of claim 1 , wherein the housing includes the upstream portion, a downstream portion, and a body portion between the upstream portion and the downstream portion.

4. The capsule of claim 3 , wherein the body portion of the housing includes a proximal end and a distal end, the upstream portion of the housing configured to engage with the distal end of the body portion, the downstream portion of the housing configured to engage with the proximal end of the body portion.

5. The capsule of claim 3 , wherein the downstream portion of the housing defines the outlet openings.

6. The capsule of claim 3 , wherein the upstream portion, the downstream portion, and the body portion jointly define the chamber within the housing.

7. The capsule of claim 3 , wherein the upstream portion and the downstream portion are configured to engage with inner surfaces of the body portion.

8. The capsule of claim 3 , wherein the upstream portion and the downstream portion include sealing ridges extending around exterior sidewalls of the upstream portion and the downstream portion.

9. The capsule of claim 1 , wherein the heater is embedded in the upstream portion of the housing.

10. The capsule of claim 1 , wherein the upstream portion of the housing exposes end sections of the heater.

11. The capsule of claim 1 , wherein the upstream portion of the housing further defines an inlet recess, the inlet recess being downstream from the alignment recess and upstream from the inlet openings.

12. The capsule of claim 3 , wherein the upstream portion of the housing is in a form of an upstream cap, the downstream portion of the housing is in a form of a downstream cap, and the body portion of the housing is in a form of a sleeve.

13. The capsule of claim 3 , wherein the body portion of the housing is formed of a plant material.

14. The capsule of claim 3 , wherein the body portion of the housing has a multi-layer structure including an underlying conductive layer and an overlying insulating layer.

15. The capsule of claim 1 , wherein the aerosol-forming substrate includes a plant material.

16. The capsule of claim 15 , wherein the plant material includes tobacco.

17. The capsule of claim 1 , wherein the heater includes a first end section, an intermediate section, and a second end section, the first end section and the second end section being external to the chamber.

18. The capsule of claim 17 , wherein the intermediate section of the heater is disposed within the aerosol-forming substrate in the chamber.

19. The capsule of claim 17 , wherein the intermediate section of the heater has a planar and winding form.

20. The capsule of claim 17 , wherein the intermediate section of the heater includes a plurality of parallel segments extending along a longest dimension of the chamber.

Assignees

• Altria Client Services Llc

Inventors

• Blackmon Zack W
• Hawes Eric
• Twite Dean
• Sundar Rangaraj S
• Castro Nicolas D
• Lau Raymond W

Classifications

• A24F40/20

  Devices using solid inhalable precursors · CPC title

• A24F40/53

  Monitoring, e.g. fault detection · CPC title

• A61M2205/127

  with provisions for heating or cooling · CPC title

• A61M2205/123

  with incorporated reservoirs · CPC title

• A61M2205/75

  with filters · CPC title