Combustion – Candle – e.g. – taper – etc. – Having structure additional to wax and wick
Reexamination Certificate
2000-06-26
2001-09-18
Price, Carl D. (Department: 3754)
Combustion
Candle, e.g., taper, etc.
Having structure additional to wax and wick
C431S288000, C431S325000, C431S126000
Reexamination Certificate
active
06290489
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to candles and in particular inclusion candles which for aesthetic purposes include an inflammable inclusion such as a botanical.
As the use of candles antedates the use of electricity to provide illumination, the candle art is well developed and well known with regard to its utilitarian aspects (that is, the production of illumination). Nowadays candles are more frequently used for their aesthetic aspects. To this end, inclusion candles typically incorporate foreign material in or on the candle surface. Where this material is botanical in nature (such as a leaf, bark, flower or grass), the inclusion candle is frequently referred to as a “botanical candle.” Most of the inclusions contained in a botanical candle are inflammable and easily ignitable during burning of a candle, thereby introducing not only a further fire hazard (above and beyond that of the burning candle wick itself) but also the production of extremely unaesthetic odiferous and malodorous scents. To prevent or reduce the likelihood of ignition of an inflammable inclusion (such as a botanical), it is known to place a solid surface sleeve as a physical barrier between the flame of the wick and the inclusion or inclusions.
Such an inclusion candle comprising an inner core formed of wax and a wick and an outer annulus formed of wax and an inflammable inclusion. A solid surface sleeve is disposed intermediate the core and the annulus, the sleeve being formed of material of low thermal conductivity to preclude ignition of the inclusion during burning of the core.
The known inclusion candles have not proven to be entirely satisfactory from either the point of view of production or use. In particular, the candle exhibits slight to severe surface cracking during temperature changes between room temperature (about 75° F.) to cold temperatures (about 45° F.) The change from room temperature to cold temperature typically occurs during candle manufacture. The resultant surface cracking has a negative aesthetic impact and makes the candle appear to be defective and hence frequently unsaleable.
Accordingly, it is an object of the present invention to provide an inclusion candle which is a solid unit devoid of visible cracking.
Another object is to provide a method of making an inclusion candle without creating cracking of the outer surface during candle formation.
SUMMARY OF THE INVENTION
It has now been found that the above and related objects of the present invention are obtained in an inclusion candle comprising an inner core, an outer annulus, and a mesh sleeve disposed intermediate the core and the annulus. More particularly, the core is formed of wax and a wick, while the annulus is formed of wax and an inflammable inclusion. The mesh sleeve defines interstices therethrough, the wax of the core and the wax of the annulus binding together through the interstices of the sleeve. The sleeve is formed of material having a coefficient of thermal expansion similar to the wax of the annulus to preclude cracking of the annulus during candle formation and during burning of the core.
Preferably the inclusion is a botanical. Typically the sleeve is annular, the core is a solid cylinder, and the annulus is a hollow cylinder, the sleeve, annulus and core being coaxial.
In a preferred embodiment, the sleeve material is nylon and the sleeve has about 53% open area, has a thickness of about 1 mm., and defines mesh openings of at least 0.03″ sufficient to enable binding of the waxes of the core and the annulus.
REFERENCES:
patent: 1462601 (1923-07-01), Hohmann
patent: 1863416 (1932-06-01), Root
patent: 2229131 (1941-01-01), Root
patent: 2310019 (1943-02-01), Hamblet
patent: 2354343 (1944-07-01), Webber et al.
patent: 3438363 (1969-04-01), Milbrandt
patent: 3475531 (1969-10-01), Roden
patent: 3898039 (1975-08-01), Lin
patent: 3983677 (1976-10-01), Lundbom
patent: 4983119 (1991-01-01), Lin
patent: 5395233 (1995-03-01), Karp
patent: 5597300 (1997-01-01), Wohl et al.
patent: 5927964 (1999-07-01), Fawcett
patent: 5967769 (1999-10-01), Thompson
patent: 900739 (1972-05-01), None
Amster Rothstein & Ebenstein
Price Carl D.
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