Candle dispenser

Patent metadata

Field	Value
Publication number	US-9541279-B2
Application number	US-201313920123-A
Country	US
Kind code	B2
Filing date	Jun 18, 2013
Priority date	Jun 18, 2013
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

Devices dispenser air treatment chemicals in response to heat generated by a candle. Heat transfer elements carry flame heat to an impregnated substrate that is positioned mostly or entirely below the candle. The air treatment chemical vapors are kept away from prolonged direct exposure to flame heat, thereby reducing heat degradation of the active. The candle automatically adjusts heat transfer rates to correct for decreasing amounts of active on the substrate as the substrate sears being used up.

First claim

What is claimed is:

1. A device for dispensing an air treatment chemical, the device comprising:
a housing that supports a container having one or more first apertures, the housing including:
one or more walls having one or more openings therethrough and defining a cavity, wherein the one or more openings allow air to flow into and out of the cavity; and
a base portion having at least one second aperture to allow air to enter the cavity;

candle wax supported by the container, the candle wax supporting a wick that can be lit to create a flame;
a substrate bearing an air treatment chemical that is mounted at least in part under the candle wax; and
a heat transfer structure positioned adjacent the wick and extending downward to the substrate,
wherein, when the wick is lit, the air treatment chemical is driven downward through the one or more first apertures of the container and out of the housing through the one or more openings.

2. The device of claim 1 , wherein the heat transfer structure comprises aluminum.

3. The device of claim 1 , wherein the heat transfer structure is a fin that widens in a downward direction such that as more of the candle is used up more of the fin can be directly exposed to heat generated from a flame of the candle.

4. The device of claim 3 , wherein the heat transfer fin can transfer heat from the candle flame to a heat transfer radial extension that extends under the candle.

5. The device of claim 4 , wherein the substrate is positioned under the heat transfer radial extension such that heat from a candle flame can drive air treatment chemical out of the housing.

6. The device of claim 1 , wherein the substrate comprises sand coated with a binder.

7. The device of claim 1 , wherein the housing has a support ledge for supporting the container.

8. The device of claim 1 , wherein the air treatment chemical is selected from the group consisting of insecticides and insect repellents.

9. A device for dispensing an air treatment chemical, the device comprising:
a housing including:
one or more walls defining a cavity; and
a lower skirt having one or more air inlets therethrough to allow air to enter the cavity;

a container having at least one aperture and being supported within the cavity;
candle wax supported by the container, the candle wax supporting a wick that can be lit to create a flame;
a substrate bearing an air treatment chemical that is mounted at least in part under the candle wax; and
a heat transfer structure positioned adjacent the wick and extending downward to the substrate,
wherein the substrate is positioned such that heat from the candle flame, if the wick is lit, can drive air treatment chemical through the at least one aperture of the container, into the cavity, and out of the housing.

10. The device of claim 9 , wherein the air treatment chemical is selected from the group consisting of insecticides and insect repellents.

11. A refill for a device for dispensing an air treatment chemical, the refill comprising:
a container having a plurality of apertures;
candle wax in the container and a wick extending in the candle wax;
a heat transfer structure mounted at least partially below the candle wax, the heat transfer structure having an axially extending fin structure and a lower radial extension, the fin structure being positioned at least in part adjacent an upper portion of the wick; and
a porous substrate positioned below and in contact with the radial extension, the porous substrate bearing the air treatment chemical,
wherein, if the wick is lit, heat from a flame created thereby can heat the fin structure, which can heat the lower radial extension, which can heat the porous substrate, which can then dispense air treatment chemical downward, through at least one of the plurality of apertures.

12. The refill of claim 11 , wherein the fin structure widens in a downward direction.

13. The refill of claim 11 , further comprising a peel off cover positioned under a lower side of the substrate.

14. The refill of claim 11 , wherein, the heat transfer structure comprises aluminum.

15. The refill of claim 11 , wherein the refill also comprises at least 10 gm of wax and at least 10 mg of air treatment chemical.

16. The refill of claim 11 , wherein the air treatment chemical is selected from the group consisting of insecticides and insect repellents.

17. A refill for a device for dispensing an air treatment chemical, the refill comprising:
a container having two or more apertures;
an insulating sleeve positioned within the container;
candle wax in the container and a wick extending in the candle wax;
a heat transfer structure mounted to the candle wax; and
a porous substrate bearing the air treatment chemical positioned at least in part below the candle wax and in contact with the heat transfer structure,
wherein, if the wick is lit, heat from a flame created thereby can heat the heat transfer structure, which can heat the porous substrate below the candle wax, which can then dispense air treatment chemical downward, through at least one of the two or more apertures.

18. The refill of claim 17 , wherein the air treatment chemical is selected from the group consisting of insecticides and insect repellents.

19. The refill of claim 9 further comprising an insulating sleeve positioned within the container.

20. The device of claim 9 , wherein the heat transfer structure includes an axially extending fin structure and a lower radial extension.

Assignees

• Johnson & Son Inc S C
• Johnson & Son Inc S C

Inventors

• Sharma Nitin
• Gilligan Allyce M

Classifications

• F21V35/00 Primary

  Candle holders · CPC title

• A61L2209/133

  Replaceable cartridges, refills · CPC title

• C11C5/006

  wicks, related accessories · CPC title

• A61L9/03

  Apparatus therefor · CPC title

• A01M1/2088 Primary

  using a burner or a flame as heat source · CPC title