Patent Grant
7367696
The present invention is directed to lanterns, and more specifically to a base for a lantern.
In general, a lantern is a portable light having a fuel source or power source. Lanterns may be used, for example, for camping, for other outdoor recreational activities, or to provide a work light in an outdoor environment.
Lanterns that burn liquid fuel or low pressure (LP) fuel are well known. Such lanterns include a burner assembly to which the fuel is delivered and one or more catalytic mantles which are mounted on the burner assembly. The fuel burns within the catalytic mantle, and the mantles incandesce and provide a bright light. The mantles are usually surrounded by a glass cylindrical globe.
More recently, lanterns that operate on batteries have become popular. For example, a lantern may utilize a rechargeable battery or one or more dry cell batteries, such as four D cell batteries. These lanterns typically use one or more fluorescent or other types of bulb.
Regardless of the type of lantern used, a stable base is needed for the lantern. This is particularly the case where a lantern may be tall, such as in models utilizing propane tanks wherein the globe is mounted over the propane tank. Such models are somewhat top-heavy, because most components for the lantern are positioned above the propane tank. The models are particularly top-heavy when the propane tank is almost empty.
The following presents a simplified summary of some embodiments of the invention in order to provide a basic understanding of the invention. This summary is not an extensive overview of the invention. It is not intended to identify key/critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some embodiments of the invention in a simplified form as a prelude to the more detailed description that is presented later.
In accordance with an embodiment of the invention, a base for a lantern is provided. The base provides a stable platform for supporting the lantern and prevents tipping of the lantern. The base may be used with fuel burning lanterns, lanterns that utilize batteries or other power sources, or other items that need a stable base.
In accordance with an embodiment, the base includes foldable feet. The feet fold out of a plane of the base for storage, for example, downward from the plane. In accordance with an embodiment, the base is turned over and the feet, when folded (in one embodiment, upward when the base is upside down), extend upward around a portion of the lantern during storage. This configuration provides convenient, compact storage of the lantern and base, so that the base may be stored with the lantern and may protect the lantern in storage.
Other features of the invention will become apparent from the following detailed description when taken in conjunction with the drawings, in which:
In the following description, various embodiments of the present invention will be described. For purposes of explanation, specific configurations and details are set forth in order to provide a thorough understanding of the embodiments. However, it will also be apparent to one skilled in the art that the present invention may be practiced without the specific details. Furthermore, well-known features may be omitted or simplified in order not to obscure the embodiment being described.
Referring now the drawings, in which like reference numerals represent like parts throughout the several views,
The lantern 20 includes a collar 24 with a fuel control knob 26 mounted thereon. A globe 28 is mounted over the collar 24. Typically, a mantle or mantles (not shown, but known in the art) are mounted within the globe and provide light for the lantern 20 in a manner known in the art. That is, fuel is provided to the mantles, and the mantles incandesce and provide a bright light. A ventilator cap 30 is mounted over the globe 28, and a bail 32 is attached to the ventilator cap.
In accordance with an embodiment, a foldable base 40 is provided for supporting the lantern 20. The foldable base 40 includes a pedestal 42 having a plurality of feet 44 attached thereto. In the embodiment shown, five feet 44 are used, but fewer or more feet may be utilized.
The pedestal 42 for the foldable base 40 is circular in configuration, but other configurations may be used. As non-limiting examples, the foldable base 40 may instead have the shape of a polygon or may be oblong. In an embodiment, the foldable base 40 is formed of plastic, but other suitable materials may be used. For example, the feet 44 may be formed of a different material than the pedestal 42, and may be provided as wire frames, as an example.
The top of the pedestal 42 includes a recess 46 that is configured and arranged to receive a bottom portion of the fuel tank 22. If alternate lanterns are supported by a foldable base, the pedestal for those lanterns may have a different configuration, such as a different sized recess or another structure, to receive a bottom portion of those lanterns. As can be understood, other lanterns may not include a fuel tank such as the fuel tank 22, or may include a fuel tank that is a different size, and thus the lantern base for those lanterns may be designed to receive a different size fuel tank, a battery or battery housing, or another portion of a lantern or other appliance structure.
The pedestal 42 includes cutouts 48 positioned around an outer circumference of the pedestal. Each of the cutouts 48 includes shoulders 50 at an upper portion.
As can best be seen in
When the feet 44 are connected to the pedestal 42, the pins 60 each fit into one of the cutouts 48 on the pedestal 42. To this end, slots 64 (
The feet 44 may fold relative to the pedestal 42 by rotation about the pins 60. When the feet 44 are in the outer position, the small protrusions 62 resist movement from this position (i.e., rotation of the feet 44) by engagement of the small protrusions with the slots 64. However, a user may apply slight force upward on the outer portions of the feet 44 (when the foldable base 40 is upside down as shown in
The slots 64 and pins 60 connection permits different feet 44 (e.g., of different lengths) to be connected to the pedestal 42. In this manner, a manufacturer may stock a single size of pedestal 42, and multiple feet sizes, so that bases for many different applications (e.g., different lanterns) may be built using the same size pedestal.
To store the lantern 20 with the base 40, the fuel tank 22 is removed from the lantern and the base. The base 40 is then turned over, and each of the feet 44 is folded upward against the resistance of the engagement of the smaller protrusions 62 within the slots 64. With pressure by the user, the smaller protrusions 62 move out of the slots 64, and the feet 44 are rotated. In the embodiment shown in the drawings, the feet 44 are folded to a position that is perpendicular to the pedestal 42, but more or less folding may be provided.
In accordance with an embodiment, the foldable base 40 in the storage position is positioned around and underneath the collar 24, so that the pedestal 42 is located underneath the collar and the feet 44 extend upward around and against the collar. This position is shown in
In accordance an embodiment, the feet 44 are arranged and positioned so that when the feet are folded upward, the fuel control knob 26 may be received between two of the feet. This feature provides more compact storage of the lantern 20.
In accordance with an embodiment, because the feet 44 are not stored within the pedestal 42, the feet 44 may be provided in any desired length, including lengths longer than the pedestal. As an example, the feet 44 may extend upward in the storage position to cover some of, or the entire, globe 28. In accordance with an embodiment, the feet 44 are of sufficient length to prevent most tipping of the lantern 20 when the base 40 is attached to the lantern 20. To this end, the feet 44 may be of sufficient length to prevent tipping at an angle, for example, of 20 degrees or greater. In one embodiment, when the feet 44 are extended outward from the pedestal 42, a tangent across two of the feet 44 is spaced at least 4½ inches from a center point of the pedestal 42. This spacing will change due to the height of the item being supported and weight distribution on the item.
To mount the lantern 20 on the base 40, the base is removed from the bottom of the collar 24, and each of the feet 44 is folded outward to the position shown in
When folding the feet 44 outward, the user is provided feedback on full extension of the feet by locking of the smaller protrusions 62 into the slots 64. The resistance to rotation of the feet 44 ends when the smaller protrusions 62 enter the slots 64. In addition, the shoulders 50 prevent further rotation outward of the feet 44. The shoulders 50 provide stability for the feet 44 in the outer position, thus providing a stable base for the lantern 20. The smaller protrusions 62 prevent the feet 44 from freely rotating when the base 40 is lifted, and also provide some stability for the feet 44 in the outer position.
If desired, in accordance with an embodiment of the invention, the feet 44 may be adjusted and fixed at a variety of different angles relative to the pedestal 42. A mechanism for providing such multiple adjustments is disclosed in U.S. Pat. No. 4,925,137. Other mechanisms may be provided for locking one or more of the feet 44 in a position other than the completely outward positions shown in
In the embodiment shown, the feet 44 fold downward relative to the pedestal 42. In an alternate embodiment, the feet 44 may fold upward relative to the pedestal 42. In one such an embodiment, the shoulders 50 may be removed, and the smaller protrusions 62 may provide locking of the feet 44 in the outer positions. Other mechanisms may be used for locking the feet 44 in this outer position.
One of the cost and aesthetic advantages of the folding base 40 is that no tools are required to assemble it, and fasteners are not required to make it functional. For example, the base 40 does not utilize screws, nuts, shafts, washers, separate hinges, e-rings, springs, or other fasteners or associated hardware.
Other variations are within the spirit of the present invention. Thus, while the invention is susceptible to various modifications and alternative constructions, a certain illustrated embodiment thereof is shown in the drawings and has been described above in detail. It should be understood, however, that there is no intention to limit the invention to the specific form or forms disclosed, but on the contrary, the intention is to cover all modifications, alternative constructions, and equivalents falling within the spirit and scope of the invention, as defined in the appended claims.
All references, including publications, patent applications, and patents, cited herein are hereby incorporated by reference to the same extent as if each reference were individually and specifically indicated to be incorporated by reference and were set forth in its entirety herein.
The use of the terms “a” and “an” and “the” and similar referents in the context of describing the invention (especially in the context of the following claims) are to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context. The terms “comprising,” “having,” “including,” and “containing” are to be construed as open-ended terms (i.e., meaning “including, but not limited to,”) unless otherwise noted. The term “connected” is to be construed as partly or wholly contained within, attached to, or joined together, even if there is something intervening. Recitation of ranges of values herein are merely intended to serve as a shorthand method of referring individually to each separate value falling within the range, unless otherwise indicated herein, and each separate value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., “such as”) provided herein, is intended merely to better illuminate embodiments of the invention and does not pose a limitation on the scope of the invention unless otherwise claimed. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the invention.
Preferred embodiments of this invention are described herein, including the best mode known to the inventors for carrying out the invention. Variations of those preferred embodiments may become apparent to those of ordinary skill in the art upon reading the foregoing description. The inventors expect skilled artisans to employ such variations as appropriate, and the inventors intend for the invention to be practiced otherwise than as specifically described herein. Accordingly, this invention includes all modifications and equivalents of the subject matter recited in the claims appended hereto as permitted by applicable law. Moreover, any combination of the above-described elements in all possible variations thereof is encompassed by the invention unless otherwise indicated herein or otherwise clearly contradicted by context.
This application claims the benefit of U.S. Provisional Application No. 60/583,241, filed Jun. 25, 2004, and incorporated herein by reference.
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