Electronic vaping device and components thereof

Patent metadata

Field	Value
Publication number	US-12317926-B2
Application number	US-202318190249-A
Country	US
Kind code	B2
Filing date	Mar 27, 2023
Priority date	Jul 24, 2014
Publication date	Jun 3, 2025
Grant date	Jun 3, 2025

Abstract

A cartomizer of an electronic vaping device includes a heater circuit which is located adjacent an air passage thereof. The heater circuit includes an electrically resistive heater in electrical communication with a secondary coil. A wick extends across the air passage. The wick is configured to draw pre-vapor formulation from a reservoir toward the heater. The heater is configured to heat the pre-vapor formulation to a temperature sufficient to vaporize the pre-vapor formulation and form a vapor. The cartomizer is connectable to a power supply component which includes a power source in electrical communication with a primary coil. The power supply component is configured to induce sufficient voltage in the secondary coil of the heater circuit such that the secondary coil is configured to heat the heater and vaporize the pre-vapor formulation when the primary coil is powered by the power source.

First claim

We claim:

1. An electronic device comprising:
a power supply section including,
a first outer housing having a seal end, and
a power source in the first outer housing, the power source in electrical communication with and configured to supply an electric current to a primary coil, the primary coil being wound about a first core, the first core flush with the seal end; and

a cartridge, the cartridge including,
a second outer housing extending in a longitudinal direction,
an air inlet,
an outlet,
an air passage communicating with the air inlet and the outlet,
a reservoir, and
a heater circuit including an electrically resistive heater in electrical communication with a secondary coil, the secondary coil being wound about a second core, the first core and the second core configured to come into contact, the primary coil configured to induce voltage in the secondary coil to apply to the electrically resistive heater.

2. The electronic device of claim 1 , wherein the primary coil is a helix extending in the longitudinal direction of the first outer housing.

3. The electronic device of claim 1 , wherein the primary coil is a helix extending in a transverse direction perpendicular to the longitudinal direction of the first outer housing.

4. The electronic device of claim 1 , wherein the electrically resistive heater has a greater electrical resistance than the secondary coil.

5. The electronic device of claim 1 , wherein the primary coil further comprises:
the first core comprising a ferrite material, the first core extending in the longitudinal direction of the first outer housing or in a transverse direction perpendicular to the longitudinal direction of the first outer housing.

6. The electronic device of claim 1 , wherein the power source of the power supply section is a battery.

7. The electronic device of claim 6 , wherein the power supply section further comprises:
control circuitry including a rectifier circuit and a storage circuit, the rectifier circuit configured to rectify a voltage induced in the primary coil such that the storage circuit may charge the battery when the primary coil is within an inductive field.

8. The electronic device of claim 7 , wherein the control circuitry further includes a voltage regulator configured to control a voltage across the primary coil.

9. The electronic device of claim 7 , wherein the control circuitry is configured to adjust one or more of frequency and magnitude in response to a reading of a battery voltage.

10. The electronic device of claim 1 , further comprising:
control circuitry including an oscillator, the oscillator configured to oscillate power supplied to the primary coil.

11. The electronic device of claim 10 , wherein the primary coil is powered by the power source via the oscillator at a frequency ranging from about 100 kHz to about 1 MHz.

12. The electronic device of claim 1 , wherein the electrically resistive heater, the secondary coil, or both the electrically resistive heater and the secondary coil are made of a magnetic material.

Assignees

• Altria Client Services Llc

Inventors

• Cadieux Edmond J
• Burton Douglas A
• Cobler Patrick J
• Smith Barry S
• Lipowicz Peter
• Cao Kai

Classifications

• A24F40/50

  Control or monitoring · CPC title

• A24F40/46 Primary

  Shape or structure of electric heating means · CPC title

• A24F40/10

  Devices using liquid inhalable precursors · CPC title

• A24F42/00

  Simulated smoking devices other than electrically operated; Component parts thereof; Manufacture or testing thereof · CPC title

• A24F42/10

  Devices with chemical heating means · CPC title