Method of making a heater of an electronic vaping device

Patent metadata

Field	Value
Publication number	US-10575560-B2
Application number	US-201615223857-A
Country	US
Kind code	B2
Filing date	Jul 29, 2016
Priority date	Jul 29, 2016
Publication date	Mar 3, 2020
Grant date	Mar 3, 2020

Abstract

A method of forming a heater assembly of an e-vaping device includes bending a wire to form a first lobe and bending the wire to form a second lobe. The first lobe and the second lobe form a generally sinuously-shaped heater having a first set of lobes and a second set of lobe. A first apex of the first lobe is generally opposite a second apex of the second lobe. The method may also include curling the first set of lobes towards the second set of lobes to form a heater having a substantially tubular form. The heater defines an opening there through.

First claim

We claim:

1. A method of forming a heater assembly of an e-vaping device, the method comprising:
bending a wire to form a first lobe, the wire having a diameter of about 0.1 mm to about 0.9 mm, the first lobe having a U-shape, an inner width of the U-shape ranging from about 0.25 mm to about 1.0 mm;
bending the wire to form a second lobe, the second lobe having a U-shape, an inner width of the U-shape ranging from about 0.25 mm to about 1.0 mm, the first lobe and the second lobe forming a generally sinuously-shaped heater having a first set of lobes and a second set of lobes, the first lobe being in the first set of lobes and the second lobe being in the second set of lobes, a first apex of the first lobe being generally opposite a second apex of the second lobe; and
curling the first set of lobes towards the second set of lobes to form a heater having a substantially tubular form, the heater defining a channel therethrough, and the first set of lobes spaced about 0.25 mm to about 1.0 mm from the second set of lobes.

2. The method of claim 1 , further comprising:
threading a wick through the channel in the heater.

3. The method of claim 1 , wherein the curling comprises:
placing a wick across the second set of lobes; and
curling the first set of lobes over the wick, such that the heater at least partially surrounds the wick.

4. The method of claim 1 , further comprising:
bending the wire to form a third lobe having a third apex;
bending the wire to form a fourth lobe having a fourth apex; and
bending the wire to form a fifth lobe having a fifth apex, the third apex and the fifth apex being in the first set of lobes, and the fourth apex being in the second set of lobes.

5. The method of claim 1 , wherein the wire is a nickel-chromium wire.

6. The method of claim 1 , further comprising:
attaching electrical leads to a first end and a second end of the heater.

7. The method of claim 4 , wherein each of the third lobe, the fourth lobe, and the fifth lobe is generally U-shaped.

8. A method of making a heater assembly of an e-vaping device, the method comprising:
bending a wire to form a generally sinuous-shaped wire having a first set of lobes and a second set of lobes, the wire having a diameter of about 0.1 mm to about 0.9 mm, each lobe of the first set of lobes and each lobe of the second set of lobes having a U-shape, an inner width of the U-shape ranging from about 0.25 mm to about 1.0 mm; and
curling the first set of lobes towards the second set of lobes to form a curled heater having a channel therethrough, and the first set of lobes spaced about 0.25 mm to about 1.0 mm from the second set of lobes.

9. The method of claim 8 , further comprising:
threading a wick through the channel in the heater.

10. The method of claim 8 , wherein the curling comprises:
curling the heater about a wick.

11. The method of claim 8 , wherein the wire is a nickel-chromium wire.

12. The method of claim 8 , further comprising:
attaching electrical leads to a first end and a second end of the heater.

13. The method of claim 8 , wherein the first set of lobes is at a first side of the heater and the second set of lobes is at a second side of the heater.

14. The method of claim 8 , wherein apexes of the first set of lobes are not in physical contact with apexes of the second set of lobes after the curling.

15. A heater of an e-vaping device comprising:
a first set of lobes; and
a second set of lobes opposite the first set of lobes, the heater having a generally tubular cross-section defining a channel therein, the first set of lobes curled towards the second set of lobes, apexes of the first set of lobes not in physical contact with apexes of the second set of lobes, the heater being formed of an electrically resistive wire, the wire having a diameter of about 0.1 mm to about 0.9 mm, each lobe of the first set of lobes and each lobe of the second set of lobes having a U-shape, an inner width of the U-shape ranging from about 0.25 mm to about 1.0 mm, and the first set of lobes being about 0.25 mm to about 1.0 mm from the second set of lobes.

16. The heater of claim 15 , wherein the wire is formed of stainless steel wire.

17. The heater of claim 15 , wherein the wire is a nickel-chromium wire.

Assignees

• Altria Client Services Llc

Inventors

• Tucker Christopher S
• Dendy Charles
• Tran Nam
• Alvarez David
• Mcelhinney Patrick

Classifications

• A24F40/42

  Cartridges or containers for inhalable precursors · CPC title

• H05B2203/017

  Manufacturing methods or apparatus for heaters · CPC title

• H05B2203/003

  using serpentine layout · CPC title

• A24F40/40

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

• H05B3/12

  characterised by the composition or nature of the conductive material · CPC title