Electronic smoking article and improved heater element

• US 9,289,014 B2
• Filed: 02/22/2013
• Issued: 03/22/2016
• Est. Priority Date: 02/22/2012
• Status: Active Grant

• Current Assignee: Altria Client Services LLC (Altria Group, Inc.)
• Original Assignee: Altria Client Services LLC (Altria Group, Inc.)
• Inventors: Tucker, Christopher S., Jordan, Geoffrey B.
• Primary Examiner(s): Lazorcik, Jason L
• Application Number:
  US13/774,609
• Publication Number:
  US 20130213419A1
• Time in Patent Office: 1,124 Days
• Field of Search: 239/13, 239/44, 239/136
• US Class Current: 1/1
• CPC Class Codes: A24F 40/10 Devices using liquid inhalable precursors
• CPC Class Codes: A24F 40/46 Shape or structure of electric heating means
• CPC Class Codes: H05B 3/0014 Devices wherein the heating current flows through particular resistances
• CPC Class Codes: H05B 3/12 characterised by the composition or nature of the conductive material
• CPC Class Codes: H05B 3/141 Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds
• CPC Class Codes: H05B 3/34 flexible, e.g. heating nets or webs

Abstract

An electronic cigarette includes a liquid supply including liquid material, a heater operable to heat the liquid material to a temperature sufficient to vaporize the liquid material and form an aerosol, and a wick in communication with the liquid material and in communication with the heater such that the wick delivers the liquid material to the heater. The heater is formed of a mesh material.

Claims

1. An electronic cigarette comprising:

a heater, the heater comprising

a ribbon of electrically resistive mesh material wound about a filamentary wick, said wick in communication with a liquid supply including liquid material,

the heater being configured to vaporize liquid material,

wherein the ribbon is wrapped about the wick so that there is spacing between windings of the ribbon heater about the wick.

2. The electronic cigarette of claim 1, wherein the electrically resistive mesh material comprises at least one material selected from the group consisting of stainless steel, copper, copper alloys, ceramic materials coated with film resistive material, nickel-chromium alloys, and combinations thereof and the conductive mesh has a tubular shape and is in contact with the wick.

3. The electronic cigarette of claim 1, wherein the electrically resistive mesh material is about 200 to about 600 mesh.

4. The electronic cigarette of claim 1, wherein the electrically resistive mesh material is about 400 mesh.

5. The electronic cigarette of claim 1, wherein the electrically resistive mesh material is formed with wire having a diameter of greater than about 0.001 inch.

6. The electronic cigarette of claim 1, wherein the electrically resistive mesh material is wound about the wick about 1 to about 10 times.

7. The electronic cigarette of claim 1, wherein the mesh material is elongate and planar at at least one end portion thereof.

8. The electronic cigarette of claim 1, wherein the heater has a length ranging from about 10 mm to about 15 mm and a width ranging from about 0.5 mm to about 2.0 mm.

9. An electronic smoking article comprising:

a heater, the heater comprising

a ribbon of electrically resistive mesh material wound about a filamentary wick, said wick in communication with a liquid supply including liquid material, the heater being configured to vaporize liquid material to produce a vapor

wherein the ribbon is wrapped about the wick so that there is spacing between windings of the ribbon heater about the wick.

10. The electronic smoking article of claim 9, wherein the electrically resistive mesh material comprises at least one material selected from the group consisting of stainless steel, copper, copper alloys, ceramic materials coated with film resistive material, nickel-chromium alloys, and combinations thereof and the conductive mesh has a tubular shape and is in contact with the wick.

11. The electronic smoking article of claim 9, wherein the electrically resistive mesh material is about 200 to about 600 mesh.

12. The electronic smoking article of claim 9, wherein the electrically resistive mesh material is about 400 mesh.

13. The electronic smoking article of claim 9, wherein the electrically resistive mesh material is formed with wire having a diameter of greater than about 0.001 inch.

14. The electronic smoking article of claim 9, wherein the electrically resistive mesh material is wound about the wick about 1 to about 10 times.

15. The electronic smoking article of claim 9, wherein the mesh material is elongate and planar at at least one end portion thereof.

16. The electronic smoking article of claim 9, wherein the heater has a length ranging from about 10 mm to about 15 mm and a width ranging from about 0.5 mm to about 2.0 mm.

17. The electronic smoking article of claim 9, wherein the mesh material has an electrical resistance ranging from about 0.3 Ohm to about 10 Ohms.

18. The electronic smoking article of claim 9, wherein the ribbon of electrically resistive mesh material includes a conductive connection region across a width of the ribbon.