Lighter with a tinted flame, a tinting composition therefor, and

Details Lighter with a tinted flame, a tinting composition therefor, and Lighter with a tinted flame, a tinting composition therefor, and

1996-11-05

1999-11-16

Dority, Carroll

Combustion

Heated line section feeds flame holder

Flame enclosure comprises, or conducts heat to heated section

431126, 431277, F23D 1144

Patent

active

059846690

DESCRIPTION:

BRIEF SUMMARY
The present invention relates to the field of lighters producing a tinted flame.
Two methods of tinting the flame of a lighter are known.
The first consists in spraying a tinting agent onto the flame, e.g. a metal dissolved in an alcohol solution, which solution is contained in a specific tank separate from the tank containing the liquid fuel.
The second consists in directly mixing the tinting agent in the liquid fuel that is used to produce the flame of the lighter. This method is more difficult to implement than the first, particularly if it is desired for the liquid fuel to be a flammable volatile liquid that is stored under pressure, since it is necessary to ensure simultaneously that the tinting agent is properly mixed in the flammable volatile liquid used and also that the tinting agent is entrained properly and regularly out from the lighter, in particular while avoiding premature dissociation of the mixture as it expands since that can lead to problems of the burner clogging or of the flame being irregularly tinted.
Japanese publication JP-A-63 058 021 describes a lighter containing in its tank both a tinting composition and a liquefied gas forming a phase that is distinct from the tinting composition and that overlies it.
In a first aspect, the present invention provides a novel lighter enabling the flame to be tinted by using a tinting agent mixed with a flammable volatile liquid stored under pressure in the same tank as the tinting agent.
According to a first advantageous characteristic of the invention, the mixture of tinting agent and of flammable volatile liquid forms only one liquid phase in the tank.
According to another advantageous characteristic of the invention, the lighter includes a porous filter suitable for expanding the flammable mixture delivered to the outside of the tank at least partially in the liquid state for burning and means for feeding said porous filter with said mixture in the liquid state. Preferably, at least one capillary tube is disposed in series with the porous filter.
The use of a porous filter fed with the flammable mixture in the liquid state, and preferably associated with at least one capillary tube, makes it possible to bring the mixture at least partially in the liquid state to the outside of the tank, thereby making it possible to avoid the above-mentioned problems by ensuring that the tinting agent is properly entrained outside the tank.
In a preferred embodiment of the invention, the mixture expanded by the porous filter is delivered into a vaporization duct situated outside the tank and subjected while the lighter is in use to the heat given off by the flame.
In some embodiments of the invention, the lighter includes a capillary tube extending downstream from the porous filter to deliver the mixture to the outside of the tank after it has passed through the porous filter. Advantageously, the inside diameter of the capillary tube extending downstream from the porous filter lies in the range 0.25 mm to 0.4 mm.
In an embodiment of the invention, the vaporization duct is formed by a vaporization duct tube connected end to end with one end of the capillary tube extending downstream from the porous filter, said vaporization duct tube having an inside diameter greater than the inside diameter of the capillary tube. The vaporization duct tube preferably has a curvilinear portion extending upwards around the axis of the flame and a free end opening out on the axis of the flame. Advantageously, between its free end and said curvilinear portion, the vaporization duct tube has a downwardly inclined portion such that said free end is situated below a plane perpendicular to the axis of the flame and tangential to said curvilinear portion. Advantageously, the inside diameter of the vaporization duct tube lies in the range 0.5 mm and 1 mm.
In another embodiment of the invention, the vaporization duct is integrated in a part forming a flame guard. Advantageously, the vaporization duct is formed between two assembled together stamped metal sheets of the part forming the

REFERENCES:
patent: 3152460 (1964-10-01), Piffath
patent: 3439993 (1969-04-01), Neufeldt
patent: 3523005 (1970-08-01), Piffath et al.
patent: 4375954 (1983-03-01), Trudel
patent: 4895511 (1990-01-01), Schmid.

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