1. Field of the Invention
The present invention relates to a piezoelectric lighter with an actuator that operates the ignition system of a cigarette or utility lighter and also contains an independent light source, i.e., a miniature lighting device commonly known as a penlight, key light, or miniature flashlight, specifically those that utilize a light emitting diode (LED) of high brightness as a light source.
2. Background of the Invention
Penlights and other miniature light devices have a wide variety of uses, from illuminating poorly lit areas and dark, narrow spaces for any number of reasons to locating keys and locks. They are often used to read documents in cars or in poorly lit areas, as well as to identify persons or things in such areas. In the absence of a flashlight or penlight, cigarette lighters are frequently used as a light source in situations where a penlight would be useful While lighters may work in some situations, there is always the danger of inadvertently starting a fire. Moreover, a cigarette lighter can be used for illumination only very briefly without the real danger of suffering a burn injury to the hand.
However, until very recently, equipping a piezoelectric lighter with a separate, reliable light source was simply impracticable because of the space requirements for the light source. The only cigarette lighters known to also contain an independent light source are those where an LED light is installed at the bottom end of the lighter, opposite to the end containing the burner and lighter actuator. In order to use such a light source, the lighter has to be reversed. This arrangement has several obvious disadvantages, especially if the light source is to be used in an unlit, dark area where the lighter may be lost or mishandled in the process of attempting to operate it. More significantly, a piezoelectric lighter with the LED light assembly at the bottom end—an assembly that requires at a minimum the LED device, a power source and a switch mechanism—will utilize almost as much space as the lighter components, which would include a piezoelectric unit, a fuel reservoir, a gas line and burner assembly, as well as an actuator to ignite the lighter. In the ordinary course of use, such a cigarette lighter would have an abbreviated life. First, because the light source is at the bottom, the LED assembly would receive many shocks since that end of the cigarette lighter would always be regarded as the base end and would be handled accordingly. Thus, the likelihood of it breaking is twice that of the ordinary lighter.
More important, however, a piezoelectric lighter with an LED light assembly at its bottom end would have to have a very small and limited fuel reservoir because of the space utilized for the LED light assembly. Thus, if such a lighter is not refillable, its usefulness as a lighter would be extremely limited, as would be its marketability. It would probably be discarded before its light source expires. On the other hand, even if it is refillable, it will have to be refilled twice as often as an ordinary refillable lighter, having half the fuel capacity. In either case, a piezoelectric lighter with a LED light assembly at the bottom end would have less commercial value than one with the LED light at the top end of the lighter. The present invention remedies those disadvantages by incorporating the LED light source into the actuator behind the burner of the lighter.
Thus there is a need for a cigarette or utility lighter with an independent light source at the same end as the lighter's burner and one that has the same fuel capacity as the ordinary, conventional lighter without an independent light source. Such features would extend the life of the lighter and make it more user friendly, and thereby more commercially viable.
The object of this invention is to provide a reliable, user friendly, independent light source that can be combined with a conventional lighter to enhance its utility as both a miniature flashlight and cigarette or utility lighter, without sacrificing its useful life and fuel capacity. Accordingly, several objects and advantages of the present invention over the prior art are:
a) To provide an actuator for a piezoelectric lighter that incorporates an LED light assembly that includes an LED, a power source, and a switch mechanism that can be operated with a simple movement of the thumb.
b) To provide an actuator for a piezoelectric lighter that incorporates an LED penlight in such a manner that the LED component will not utilize space dedicated to the lighter's fuel supply.
c) To provide a cigarette lighter with an independent light source, i.e., a penlight or miniature flashlight, that will have the same fuel capacity as the ordinary, conventional lighter without an independent light source.
d) To provide a cigarette lighter with an independent light source at the top end of the lighter, next to the lighter burner for the most convenient handling and user friendly position.
e) To provide an actuator for a cigarette lighter that incorporates an LED light assembly that is positioned next to the lighter burner at the top end of the lighter to minimize damage from handling shocks.
f) To provide an actuator for a cigarette lighter that incorporates an LED light assembly by using a simplified construction and design that integrates the LED device, the power source, and the switch mechanism in the most economical and cost effective way.
g) To provide an actuator that incorporates an LED lighting assembly that can be adapted to the greatest range of piezoelectric lighter embodiments in the art.
In this regard, the present invention provides an actuator for a piezoelectric cigarette or utility lighter which has an incorporated LED light assembly as an independent light source, commonly called a penlight. The actuator is embodied in a standard, conventional piezoelectric lighter with an elongated outer body casing defining a fuel reservoir enclosed by an inner fuel reservoir casing, and a fuel dispensing assembly consisting of a fuel line with a valve that regulates the flow of fuel to a burner atop the fuel assembly. A lighter top cap covers half of the lighter's top end, enclosing the burner and a pair of vertical arms that secure a fireproof partition across the top of the lighter. The fireproof partition separates and shields the LED light assembly incorporated in the actuator from the lighter burner. The fuel released by the burner is ignited by an electric spark generated by a piezoelectric unit that is positioned behind the fuel dispensing assembly and above a portion of the fuel reservoir. The piezoelectric unit generates a spark to the burner through a spark conductor when a smaller top member is telescoped into a larger bottom member of the unit by downward, vertical pressure on the actuator which is slidable. The slidable actuator covers the other half of the top end of the lighter and is positioned behind the lighter top cap and directly over the piezoelectric unit. The downward pressure on the actuator also releases fuel into the burner at the same time that it generates an electric spark and, thereby, creates a flame. The actuator is configured such that, when depressed, it not only causes the piezoelectric unit to emit the electric spark into the area of the burner, it also causes a gas lever to open the valve regulating the flow of gas to the burner. The gas lever extends from the gas valve on the gas line to the piezoelectric unit, where it is configured to be depressed when the actuator telescopes the top member of the piezoelectric unit, thereby causing the other end of the gas lever to open the gas valve on the gas line. A controllable flame from the burner results. When downward pressure on the actuator ceases, a spring within the piezoelectric unit providing resistance to the downward pressure forces the actuator upwards to its original position. As a result, pressure on the gas lever is relieved and the gas valve closes, extinguishing the flame.
The instant invention is a lighter actuator with an incorporated LED light assembly which will provide a reliable, user friendly, independent light source in addition to igniting the lighter. The actuator is generally in two parts. The first part is an integrally molded, helmet shaped, LED top cap constructed so as to slidably fit on top of the lighter behind the lighter top cap and burner, separated by a fireproof partition. The helmet shaped, LED top cap includes a back wall and two opposite side walls extending downward from a top wall, all of which define a cavity that receives the second part of the actuator. The second part of the actuator is the upper portion of the LED light assembly, which includes an LED bulb with two contact leads on an LED platform which has a battery holder for three or less batteries attached. The top wall of the LED top cap has an aperture through which the light beam from the LED shines. The aperture is defined by a round heat guard that extends downwards from the opening and is sized to receive the LED bulb when the LED top cap is assembled with the LED light assembly to complete the actuator. Two abbreviated flanges extending from the top of the open end of the LED top cap are configured to slidably connect the LED top cap to the lighter body by articulating with connecting channels on the vertical arms extending from the top of the lighter body. Fitting within the vertical connecting channel, the flanges provide a slidable means for the depression of the actuator. The back wall of the LED top cap has a small bore for a LED pressure light switch. And, on the inside of the LED top cap are slight, molded vertical ribs in the back and front to provide a means for connecting and stabilizing the LED light assembly when inserted. At the open end of the LED top cap, the free ends of the two vertical side walls are configured to provide a seal with the folded edges of the lighter cap when the LED top cap is fitted to the lighter.
The LED assembly consists of a LED bulb of suitable size and type with two contact leads, one short and the other long, extending therefrom. The LED bulb rests atop of and is adhered to a LED platform that includes a flat, horizontal base bisected by a longitudinal, vertical post on which the LED bulb is positioned. The horizontal base provides a solid floor to the LED top cap and a surface to depress the piezoelectric unit's top member to activate the lighter. The LED assembly also includes a power source consisting of three flat, cell batteries contained in a battery holder, attached at a right angle to the underside of the LED platform base at the end next to the back wall of the LED cap when the actuator is assembled. The effect of the LED bulb and platform fitting within the LED cap, along with the perpendicular, flatten battery holder as the power source is to utilize the least amount of space for an independent light source. The three (3) cylindrical, flat cell batteries, of sufficient voltage to power the LED, inserted in three (3) vertically aligned battery compartments on the battery holder requires less space than the piezoelectric unit. In fact, the battery holder utilizes unused space within the lighter body because it fits within the unused space between the outer casing and the piezoelectric unit.
The operation of the penlight feature of the lighter is a simple matter of turning the lighter in the direction one wants the light beam to illuminate and pressing the light switch located on the outside of the back wall of the LED top cap. The short lead on the LED bulb runs to the area of the light switch, adjacent to, but not touching a flexible conductive plate that runs from the negative terminal of the first cell battery on the battery holder. The conductive plate is flexible to a degree that when the light switch is pressed inward against it, the conductive plate flexes and makes contact with the short lead, thereby closing a circuit and powering the LED penlight. The electric circuit also consists of the long lead extending down from the LED bulb, along the back side of the battery holder where it makes contact with the positive terminal of the third battery through a bore in its battery compartment. On its opposite side, the negative terminal of the third battery makes contact with the positive terminal of the second battery by means of a conductive plate clipped to the surface of those two batteries. The negative terminal of the second battery is similar linked to the positive terminal of the first battery by a conductive plate in their adjoining battery compartments. This simple, elegant arrangement of 3 flat, cell batteries linked by conductive plates sets up an electric circuit which is closed and powers up the LED bulb when the light switch is depressed. As with the lighter flame and the actuator, the LED light is extinguished when pressure on the light switch is removed.
Although a specific embodiment of the present invention will now be described with reference to the drawings, the following description is only one example of a variety of specific embodiments representative of the principles of the present invention. Various changes and modifications obvious to one skilled in the art pertaining to the present invention are deemed to be within the spirit, scope and contemplation of the present invention as further defined in the appended claims.
Two vertical arms, one of which 40 can be seen in cross section on
The exploded, cross-section view of the actuator in
It is clear from the foregoing description of the structure and operation of the LED penlight actuator for a piezoelectric lighter in a preferred embodiment that the instant invention provides a simple and elegant construction of a lighter with a Led penlight actuator. The LED penlight actuator is not only cost efficient and simple to operate (by the simple movement of the thumb), it can be adapted to greatest range of piezoelectric lighter embodiments in the art. Moreover, the invention enhances the commercial appeal of the ordinary lighter since the actuator adds the independent light source at the top of the lighter without sacrificing fuel capacity. Although this invention has been disclosed and illustrated with reference to a particular embodiment, the intention is not to limit the scope of the present invention. It will be apparent to those skilled in the art that various equivalent modifications in structure, features, assembling, and rearrangements of the parts may be made without departing from the spirit and scope of the underlying inventive concepts indicated by the appended claims.
Number | Name | Date | Kind |
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6520658 | Chen | Feb 2003 | B2 |
Number | Date | Country | |
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20070259297 A1 | Nov 2007 | US |