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  Candle system for enhancing burning and improving volatiles performance and a manufacturing method for the sameUSPTO Application #: 20060084020Title: Candle system for enhancing burning and improving volatiles performance and a manufacturing method for the same Abstract: A system and a method for enhancing burning candle and improving volatiles performance with an inner tube having axially spaced holes and/or cuts or a candle container having at least inner-tube having holes cuts, continuously supplying the fresh air through the holes cuts, and supplying the fresh air to the foot of the burning wick, and for manufacturing the same. (end of abstract) Agent: Andrew F. Young, P.C. - Floral Park, NY, US Inventors: Tetsuo Nakatsu, Ichiro Kubota USPTO Applicaton #: 20060084020 - Class: 431291000 (USPTO) Related Patent Categories: Combustion, Candle, E.g., Taper, Etc., Having Structure Additional To Wax And Wick, Fuel Body Totally Within Casing, E.g., Vigil Light, Etc. The Patent Description & Claims data below is from USPTO Patent Application 20060084020. Brief Patent Description - Full Patent Description - Patent Application Claims
RELATED APPLICATIONS [0001] This application claims priority from U.S. patent application Ser. No. 10/641,626, filed Aug. 16, 2003, the contents of which are fully incorporated by reference. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] This invention relates generally to the field of candle systems and more specifically to a system and a method for enhancing candle burning and improving volatiles' performance. The invention further relates to a method for manufacturing the same. This invention specifically relates to a system and a method to continuously supply the fresh air near the foot of the burning wick and the top surface of candle in a candle container. [0004] 2. Description of the Related Art [0005] Candles have traditionally been used to lighten the dark and are still an important light source in some countries and are still an important emergency light source even in the developed countries when the electric light source is shut off for any reason. [0006] In addition candles, are used to heat up some materials such as portable foods. Nowadays candles with volatiles are very common in providing fragrance, aromas, pesticides, and even anti-microbial compounds into the atmosphere for a wide variety of reasons. In addition to brightness of burning candle flame, fragrances and aromas from a candle are used to improve the feel or mood of a location and are often used to improve an original emotional response room and also aid in the development of a specific emotional response. [0007] In addition, biologically active compounds, such as pesticides and pest repellants are delivered by using candles. Candles are still preferred because of their portability and cost mood performance in many occasions. [0008] However, one of the drawbacks of candles is that a part of a solid candle wax is liquefied (to melting wax) while it is burning; wherein the melting wax pool gradually becomes a rather large pool, and the melting wax often times drips from the top of the candle; wherein the candle becomes messy and ugly, and in some case the melting wax even cause damages such as on furniture surfaces. Accordingly there is a need for a system that controls the dripping of melted wax and minimizes surface damage. [0009] In particular, candles including oils such as fragrance oils possibly cause more damage than non-fragrance candles, to furniture surfaces. To avoid this kind of drawback due to the melting wax, either a candle unified with a container or a candle sitting in a container (or holder) while burning, are getting more and more popular to avoid such dripping followed by damages. [0010] As an additional advantage, a highly decorated container enhances more atmospheric mood than only a candle itself. Instead of using a container, some people use a plate or a tray to avoid such damage with better burning of the candle because the candle is always exposed to the fresh air ("open-candle"), but dripping of the melting wax almost always takes place; wherein not only the amount of wax is being significantly lost for a long period of time without burning due to wasting dripped wax, but also the dripped melting wax again is solidified and it looks very ugly and makes bad atmospheric mood. [0011] Furthermore, as in a worst scenario, the spread melting wax on the tray occasionally starts to vigorously burn (from combustion) even without a wick and may becomes a serious fire hazard. Finally, performance of open-candle is poorer than a candle in a container (`closed-candle`) because the melting wax pool is occasionally broken and the wax drips to give inconsistent fragrance dispersion. [0012] Accordingly, a candle in a bottle-like container (or holder) (`closed-candle`) is preferred by many consumers. Unfortunately, burning of a closed-candle is generally not very good because of its structural drawback to supply fresh air (oxygen supply) compared to an open-candle. [0013] To improve burning, formulation wax, type of wax and kinds of wick have been newly modified and developed. However none of these modifications can substantially improve the supply of fresh air to the foot of burning wick and the top surface of candle, which is a significant advantage for open-candles. Therefore an appropriate fragrance formula for scented candle in a container is very critical to maintain good burning due to rather shortage of the fresh air supply after burning for a while. In general, the longer period of time of candle burning, the poorer quality of candle burning because the candle's height and the wick gradually shorten and sinks into the bottom of container and in contrast the wax pool becomes larger and deeper, and as a result the supply of the fresh air to the foot of the burning wick and top surface of candle becomes gradually less and less. [0014] No system is in the market or literature that effectively, economically, or continuously supplies fresh air directly to the foot of the burning wick and candle. [0015] Referring now to FIG. 1A and FIG. 1B, a conventional burning candle container 11 includes a candle wax 12 having a top level 15, a candle wick 13, a wax pool 14 (see FIG. 1B), and a candle flame 16. [0016] Candle wax 12 may contain various components such as fragrances, essential oils, insect repellents, insecticides, and anti-microbial compounds. During initial operational use, shown at the beginning in FIG. 1A, initial outside air flows A1a are drawn to the candle container on all sides and spread to the upward air flows A2a and the downward air flows A3a; wherein the upward air flows A2a is warmed and combined with the updraft air flows A5a. In contrast the downward air flows A3a passes to the foot of the burning wick 13 and into the candle flame 16. [0017] Candle flame 16, as hot as hot as 2000.degree. C., warms air flows A2a in combination with the combined pressure from surrounding air flows A3a of the container 11; and creates a broad and strong hot airflow as updraft A5a. [0018] At the beginning of the candle burning (FIG. 1A) the top level 15 of the candle wax 12 is close enough to the upper edge of the container's wall to get a fresh air from the outside the container 11, but as shown in FIG. 1B after burning for a while, the top level 15 of the wax 12, or shown as the wax pool 14, gradually sinks in the container. [0019] Accordingly, after burning for some time (as shown in FIG. 1B) the burning wick is farther from the fresh air and in addition the fresh air supply becomes poorer because the stronger updraft A5b takes the fresh air A1b via upward air flow A2b and disperses as a greater percentage to the air before the branched fresh air A3b reaches to the foot of the burning wick 13 area. Unfortunately, as if it is contradictive, over time the better burning the candle, the poorer the fresh air supply to the foot of the burning wick. Accordingly to these air flows the candle flame 16 becomes smaller over time (via lack of air supply, etc.) which means poor burning, and poor volatility of the desirable volatiles from the wax pool 14 resulting in poor volatiles' performance. This phenomenon can be observed when the flame becomes smaller and the candle is repositioned, the flame becomes bigger and brighter with more air. [0020] Unfortunately, as a result of the multiple disadvantages inherent with conventional delivery candle systems, manufacturers have been forced to respond by: (1) changing the wax base material to a more expensive substance; (2) changing the wick material to a more expensive material having a lower temperature of combustion;(3) improving the thermal resistance of the active volatiles placed in the base material; (4) increasing the of volatile components within the base material to an expensive and unnecessarily high concentration; and (5) placing hoods above the wick in attempts to wick minimize wick flare-ups and re-radiate heat downward to minimize irregular molten pool shapes. [0021] As a further unfortunate circumstance, available commercial candle-base systems are only positioned to protect the candle flame from being blown out or for pleasing decoration or design purposes. Many candle hoods substantially decrease volatile performance because of inadequate design and use. There is not such a simple and feasible system to be able to supply the fresh air to the lower inside part of the candle container. [0022] A candle hood, as disclosed in U.S. Pat. No. 6,190,439, is narrower at the top than bottom and the candle is retained within walls extending above the molten pool level. Consequently, volatiles that escape from the molten pool are forced into a narrow cone containing the hot combustion gasses, and are thermally consumed. Volatiles that do escape the hot combustion gasses experience the additional turbulence resulting from the pressure gradient between the wide bottom and narrow top openings of the hood. In addition, the disclosed invention does not improve any air supply to the inside of candle container. Continue reading... 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