Heater and method for efficiently generating an aerosol from an indexing substrate

• US 6,053,176 A
• Filed: 02/23/1999
• Issued: 04/25/2000
• Est. Priority Date: 02/23/1999
• Status: Expired due to Fees

• Current Assignee: Philip Morris USA Incorporated (Altria Group, Inc.)
• Original Assignee: Philip Morris USA Incorporated (Altria Group, Inc.)
• Inventors: Sanderson, Wesley G., Braunshteyn, Michael S., Hajaligol, Mohammad R., Adams, John M.
• Primary Examiner(s): Silverman, Stanley S.
• Assistant Examiner(s): COLAIANNI, MICHAEL
• Application Number:
  US09/255,316
• Time in Patent Office: 427 Days
• Field of Search: 131/175, 131/178, 131/187, 131/190, 131/224, 131/257, 131/240.1, 131/242, 131/260, 131/329, 131/270, 131/271, 131/273, 128/202.21, 128/203.27
• US Class Current: 131/329
• CPC Class Codes: A24D 1/20 Cigarettes specially adapted for simulated smoking devices
• CPC Class Codes: A24F 40/20 Devices using solid inhalable precursors
• CPC Class Codes: A24F 40/46 Shape or structure of electric heating means
• CPC Class Codes: A24F 40/465 specially adapted for induction heating
• CPC Class Codes: A24F 40/53 Monitoring, e.g. fault detection
• CPC Class Codes: A24F 40/60 Devices with integrated user interfaces

Abstract

A system for heating a cigarette to evolve an aerosol upon consumer request comprises a cigarette and a lighter. The lighter includes a housing into which the cigarette is inserted, and a stationary heater inside the housing is positioned in thermal proximity to the cigarette. The cigarette is rotatably mounted inside the housing. When a puff is desired, heat is applied to the cigarette to produce the aerosol. Prior to the next puff, the cigarette is slightly rotated to position a fresh portion of the cigarette in proximity to the stationary heater, and this procedure is repeated until the cigarette is spent.

Claims

1. A system for heating a vaporizable rotating cigarette substrate to evolve an aerosol upon consumer request, comprising:

a vaporizable cigarette substrate shaped in a substantially elongate form having a longitudinal axis and having at least one substantially circular cross sectional portion with paper on the outside and an interior portion filled with tobacco, the cigarette substrate having at least two fresh areas to heat and further being adapted to be received within a lighter, and

a lighter comprising

a housing,

a first aperture formed in the housing for insertion of the cigarette substrate and a cavity in the housing for receiving the cigarette substrate,

a stationary heater located in thermal proximity to the cavity in the housing and connected to a source of electrical power,

a rotator rotatably mounted in the housing for engaging and rotating the cigarette substrate, the rotator being in fixed angular relation to the received cigarette substrate,

a sensor located within the housing for detecting a request for generation of aerosol and generating a signal, and

a controller which records angular position and condition of use of the cigarette substrate, receives the sensor generated signal, determines whether heating the substrate will generate an aerosol, and controls power to the heater,

whereby upon request an aerosol is generated from the cigarette substrate when a fresh portion of the cigarette substrate is in thermal proximity to the heater.

2. A system as in claim 1 wherein the heater is an electrically resistive heating element.

3. A system as in claim 1 wherein the heater produces inductive radiation.

4. A system as in claim 1 wherein the heater is a quartz lamp.

5. A system as in claim 1 wherein the heater is a laser light.

6. A system as in claim 1 wherein the cavity comprises a rotatably mounted cigarette receptacle which surrounds the inserted cigarette substrate and rotates about its longitudinal axis.

7. A system as in claim 1 wherein the rotator comprises an indexing wheel arranged perpendicular to the longitudinal axis of the cigarette substrate.

8. A system as in claim 7 wherein the indexing wheel has at least one notch at the periphery of the wheel.

9. A system as in claim 8 wherein the indexing wheel has a plurality of notches.

10. A system as in claim 9 wherein the indexing wheel has about eight notches.

11. A system as in claim 7 including a lever connected to drive the indexing wheel.

12. A system as in claim 7 wherein the indexing wheel partially extends outside the housing.

13. A system as in claim 12 wherein the indexing wheel has an external perimeter formed with a surface having grooves.

14. A system as in claim 1 wherein the rotator comprises an indexing sleeve mounted around the longitudinal axis of the cigarette.

15. A system as in claim 14 wherein the housing further comprises a displaceable rod having an engaging member, the indexing sleeve is formed with a continuous, angled groove around its perimeter, and the engaging member is slidingly disposed within the angled groove, whereby when the engaging member is displaced, the indexing sleeve is rotated.

16. A system as in claim 1 further comprising a ventilation sleeve surrounding the cavity for receiving the cigarette substrate disposed between the cigarette substrate and the heater, the ventilation sleeve having an aperture substantially contiguous to the heater.

17. A system as in claim 2 wherein the heater is a cermet material.

18. A system for heating a vaporizable rotating cigarette substrate to evolve an aerosol upon consumer request, comprising:

a vaporizable cigarette substrate shaped in a substantially cylindrical form having a longitudinal axis and being substantially circular in cross-section, the cigarette substrate having at least two areas to heat and including paper on the outside with an interior portion filled with tobacco and further being adapted to be received within a lighter and heated to evolve a vapor which is consumed by a consumer,

a lighter comprising

a housing having an aperture formed therein for insertion of a cigarette substrate and a cavity in the housing for receiving the cigarette substrate,

a rotatably mounted cigarette receptacle in the housing for receiving the cigarette substrate,

an electrically resistive heater located in thermal proximity to the cavity in the housing and connected to a source of electrical power,

a rotator rotatably mounted in the housing for engaging and rotating the cigarette substrate and cigarette receptacle, the rotator being in a fixed angular relation to the received cigarette substrate,

a sensor located within the housing for detecting a request for generation of aerosol and generating a signal, and

a controller which records angular position and condition of use of the cigarette substrate, receives the sensor generated signal, determines whether heating the substrate will generate an aerosol, and controls power to the heater,

whereby upon request an aerosol is generated from the substrate when fresh substrate is in thermal proximity to the heater.