AU2005100797A4 - Vapour release mechanism - Google Patents
Vapour release mechanism Download PDFInfo
- Publication number
- AU2005100797A4 AU2005100797A4 AU2005100797A AU2005100797A AU2005100797A4 AU 2005100797 A4 AU2005100797 A4 AU 2005100797A4 AU 2005100797 A AU2005100797 A AU 2005100797A AU 2005100797 A AU2005100797 A AU 2005100797A AU 2005100797 A4 AU2005100797 A4 AU 2005100797A4
- Authority
- AU
- Australia
- Prior art keywords
- inner member
- vapour
- outer casing
- melting point
- substance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 230000007246 mechanism Effects 0.000 title claims description 10
- 239000000126 substance Substances 0.000 claims description 24
- 238000002844 melting Methods 0.000 claims description 14
- 230000008018 melting Effects 0.000 claims description 14
- 239000004480 active ingredient Substances 0.000 claims description 7
- 239000012188 paraffin wax Substances 0.000 claims description 4
- FIPWRIJSWJWJAI-UHFFFAOYSA-N Butyl carbitol 6-propylpiperonyl ether Chemical compound C1=C(CCC)C(COCCOCCOCCCC)=CC2=C1OCO2 FIPWRIJSWJWJAI-UHFFFAOYSA-N 0.000 claims description 3
- 239000002917 insecticide Substances 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 3
- 229960005235 piperonyl butoxide Drugs 0.000 claims description 3
- SMKRKQBMYOFFMU-UHFFFAOYSA-N prallethrin Chemical compound CC1(C)C(C=C(C)C)C1C(=O)OC1C(C)=C(CC#C)C(=O)C1 SMKRKQBMYOFFMU-UHFFFAOYSA-N 0.000 claims description 3
- 239000005871 repellent Substances 0.000 claims description 2
- 230000002940 repellent Effects 0.000 claims description 2
- 239000001993 wax Substances 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 241000506680 Haemulon melanurum Species 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000003039 volatile agent Substances 0.000 description 2
- 244000166675 Cymbopogon nardus Species 0.000 description 1
- 235000018791 Cymbopogon nardus Nutrition 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 239000000077 insect repellent Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Fats And Perfumes (AREA)
Description
VAPOUR RELEASING MECHANISM FIELD OF INVENTION This invention relates to vapour releasing mechanisms in particular but not exclusively to a vapour releasing candle comprising two substances of different melting points BACKGROUND ART Vapour releasing candles are known and these include candles such as citronella candles used as insect repellants. Vapour releasing candles, however, are not known in the insecticide field where volatile agents which actually destroy insects are used. US6849240 B2 (Nakatsu et al) describes a method for improving the delivery of volatiles from a burning candle by providing stabilised laminar gas flow adjacent a volatile containing molten pool, ensuring an enlarged molten pool by close regulation of thermal transfer between a monolithic candle mass and the surrounding atmosphere and minimizing volatile loss through un-regulated thermal gradients.
US6033,212 (Bonnema et al) describes a lamp for dispensing volatile substance wherein there is a mantle disposed inside the lamp, in communication with the exit of the fuel source, and wherein as the fuel is ignited and burns, heat generated is conducted through a cover to a replaceable pad containing the volatile substance which is vapourized.
None of these prior art patents describes the present invention which is directed to a candle composed of two substances having different melting points.
OBJECTION OF INVENTION The object of this invention thus to provide an improved vapour dispensing mechanism or to at least provide the public with a useful choice.
SUMMARY OF INVENTION In one aspect, the invention resides in a vapour releasing mechanism typically in the form of a candle including and in combination an inner member of a first flammable or combustible substance having a first melting point, the inner member carrying an active ingredient to be released as a vapour, an outer casing of a second flammable or combustible substance encasing the inner member, the second substance having a second melting point of a lower temperature than the first melting point, a wick passing through the inner member and outer casing, wherein in use, lighting the wick to produce a flame causes the outer casing to melt and molten substance in contact with the inner member, in turn, melts the inner member thereby releasing the active ingredient as a vapour from the molten pool feeding the wick.
Preferably the inner member of the first flammable or combustible substance has a melting point in the range of 80 to 90 degrees Celsius.
Preferably the second flammable or combustible substance of the outer casing has a melting point of between 60 and 70 degrees Celsius.
The inner member and outer casing substances are preferably paraffin based waxes.
In preference, the active ingredient to be released is prallethrin and a synergist, piperonyl butoxide, or any insecticide and/or repellent.
Preferably the wick passing through the inner member and outer casing is a cotton wick.
Suitably the candle can be of different sizes and shapes and may be enclosed in a glass or ceramic container.
Suitably, the glass or ceramic container extends above the height of the candle to protect the flame from wind or air currents that may disturb or extinguish the flame.
The time of burning before the first and second substances are exhausted will of course, depend on the size of the wick and the amount of the substances.
BRIEF DESCRIPTION OF DRAWINGS Figure 1 shows a plan view of a preferred embodiment of the invention in the form of a candle.
Figure 2 shows a side elevation of the candle of figure 1.
DETAILED DESCRIPTION OF THE DRAWINGS Referring to Figures 1 and 2, there is shown plan and side elevation views of a preferred embodiment of the invention in the form of a candle The candle 10 has an inner member 12 of a first flammable or combustible substance having a melting point of between 80 and 90 degrees Celsius and is of a paraffin wax base. The outer casing 14 is also of a paraffin wax based substance with a melting point of between 60 and 70 degrees Celsius.
It will be obvious as the wick 18, which is preferably a cotton wick is lit, the heat generated from the flame 20 will first melt the outer casing 14 forming a pool 22 above the inner member 12. The heat from the molten outer casing substance in contact with the top of the inner member 12a also melts the substance of the inner member. Volatile active ingredients, in this particular example, prallethrin with a synergist, piperonyl butoxide is released from the molten pool as well as through the wick. The candle can be encased in a glass or ceramic container 24
Claims (5)
1. A vapour releasing mechanism including in combination, an inner member of a first flammable or combustible substance having a first melting point, the inner member carrying an active ingredient to be released as a vapour, an outer casing of a second flammable or combustible substance encasing the inner member, the second substance having a second melting point of a lower temperature than the first melting point, a wick passing through the inner member and outer casing, wherein in use, lighting the wick to produce a flame causes the outer casing to melt and molten substance in contact with the inner member, in turn, melts the inner member thereby releasing the active ingredient as a vapour from the molten pool feeding the wick.
2. A vapour releasing mechanism as claimed in claim 1, wherein, the inner member of the first flammable or combustible substance has a melting point in the range of 80 to 90 degrees Celsius.
3. A vapour releasing mechanism as claimed in claim 1, wherein the second flammable or combustible substance of the outer casing has a melting point of between 60 and 70 degrees Celsius. 6
4. A vapour releasing mechanism as claimed in any of the above claims wherein the inner member and outer casing substances are paraffin based waxes.
5. A vapour releasing mechanism as claimed in any of the above claims wherein, the active ingredient to be released is prallethrin with a synergist, piperonyl butoxide, or any insecticide and/or repellent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2005100797A AU2005100797A4 (en) | 2005-09-26 | 2005-09-26 | Vapour release mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2005100797A AU2005100797A4 (en) | 2005-09-26 | 2005-09-26 | Vapour release mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2005100797A4 true AU2005100797A4 (en) | 2005-11-17 |
Family
ID=35455829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2005100797A Ceased AU2005100797A4 (en) | 2005-09-26 | 2005-09-26 | Vapour release mechanism |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2005100797A4 (en) |
-
2005
- 2005-09-26 AU AU2005100797A patent/AU2005100797A4/en not_active Ceased
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK21 | Patent ceased section 101c(b)/section 143a(c)/reg. 9a.4 - examination under section 101b had not been carried out within the period prescribed |