Patent Application
20210229893
Embodiments described herein relate generally to portable container, particularly for food and/or beverages and which may be a cooler or a warmer, and more particularly to latches used in the opening and closing of portable containers.
Coolers are typically in the form of an insulated container which has walls upstanding from a base to define a top opening to which a removable cover, i.e. a lid, is mounted. Thus, such coolers are typically rectangular with two sidewalls and two end walls, and have a pivotal handle assembly mounted to each end wall, or to each side wall, for carrying the cooler. However, the cooler may be formed into a different geometric or non-geometric shape. As such, conventional coolers have the lid designed to be removable from the body of the container. Generally, the lid may coupled to the body by either i) friction fit, ii) engagement with pivotally mounted locking carrying handles which selective engage and hold the lid on the container, or iii) use of one or more hinges, or latches, at one end of either a side wall or end wall and a locking mechanism or one or more latches at the opposing side of the side wall or end wall that uses the hinges, or latches.
In the embodiments where latches are used in coupling the lid to the body of a cooler, the latches are generally fabricated as a single component made of plastic. Each latch includes a top portion that is coupled to a side portion of the lid, a bottom portion that coupled to a side wall or end wall of the cooler, and an intermediate portion that extends from the top portion of the latch to the bottom portion of the latch. As mentioned above, this intermediate portion also is generally fabricated from plastic since the entire latch is a single component. This intermediate portion is thinner than the top portion and the bottom portion of the latch and is designed to allow the top portion to move between different positions when the lid is moved between an open and closed position with respect to the body of the cooler. The top portion of the latch is retained in a fixed position when the lid is opened and closed since the top portion is attached to the lid of the cooler.
The latch of the prior art used in coolers provide a certain amount of flexes before reaching a point of failure where the intermediate portion of the latch cracks and/or breaks due to stresses and fatigue. The cooler itself is still is good condition for more use; but since the latch breaks before the cooler's end of life, oftentimes, consumers either end up tossing the cooler away and purchase a new one or the consumer must find an appropriate replacement latch and replace the broken latch in order to keep using the cooler. An improved latch that provides more flexes is needed to extend the latch's life to get more use out of the cooler before having to purchase a new cooler or replace the defective latch.
The foregoing and other features and aspects of the invention are best understood with reference to the following description of certain exemplary embodiments, when read in conjunction with the accompanying drawings, which are not necessarily drawn to scale, and wherein:
The drawings illustrate only exemplary embodiments of the invention and are therefore not to be considered limiting of its scope, as the invention may admit to other equally effective embodiments.
The exemplary embodiments discussed herein are directed to various aspects (e.g., methods, systems, devices) of a portable cooler, and more particularly to latches used in the opening and closing of portable containers. In certain exemplary embodiments, the latches used in the opening and closing of portable coolers may be used in one or more of a number of different cooler sizes with various lengths, widths, heights, geometrical and non-geometrical shapes and/or capacities. Further, in certain exemplary embodiments, the portable cooler may be fabricated using different colors, accents, and/or different personalizations, such as by laser etching across one or more of its surfaces. Further, the portable coolers may include other known features including but not limited to wheels, lights, and speakers.
Exemplary embodiments of the portable cooler now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of portable coolers, and more particularly the latches are shown. The portable coolers, and more particularly the latches may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the portable coolers, and more particularly the latches to those or ordinary skill in the art. Like, but not necessarily the same, elements in the various figures are denoted by like reference numerals for consistency.
The body 110 includes an outer shell 120, an inner liner (not shown) disposed within the outer shell 120, an insulation layer (not shown) disposed between the outer shell 120 and the inner liner (not shown), and one or more handles 140 for moving the portable cooler 100. The outer shell 120 is fabricated using blow molding according to some exemplary embodiments, but may be fabricated using other known fabricating techniques. The outer shell 120 may be fabricated as a single piece construction or as multiple pieces and coupled to one another. The outer shell 120 includes two oppositely positioned longitudinal sides 121, 122 and two oppositely positioned lateral ends 123, 124 that are positioned substantially perpendicular to the ends of the longitudinal sides 121, 122. Alternatively, the sides 121, 122 and the ends 123, 124 of the outer shell 120 may not be perpendicular to one another and can form a different geometric or non-geometric shape without departing from the scope and spirit of the exemplary embodiment. Further, the outer shell 120 may have greater or fewer than four total sides in some exemplary embodiments. The outer shell 120 also includes a bottom 125 that is positioned at the lower ends of each of the longitudinal sides 121, 122 and the lateral ends 123, 124 and collectively forms a cavity (not shown) therein. According to some exemplary embodiments, the outer shell 120 is formed with a recess 127 along the upper edges thereof or adjacently thereto. One or more protrusions 129 are formed within the recess 127 and is used to facilitate the coupling of the latch 180 to the body 110. In other exemplary embodiments, the protrusions 129 are formed along the upper portion of the outer shell 120 even though a recess 127 is not formed. The protrusions 129 are cylindrical in shape by can be formed in other geometric or non-geometric shapes. The outer shell 120 is dimensioned and sized such that the inner liner (not shown) is inserted into the cavity (not shown) and a space (not shown) is created between the outer surface of the inner liner (not shown) and the inner surface of the outer shell 120. The space (not shown) is filled with the insulation layer (not shown), which may be air, Styrofoam®, or some other known, either now or in the future, insulating material. Although
The liner (not shown) is fabricated using injection molding according to some exemplary embodiment, but may be fabricated using other known fabricating techniques. The liner is fabricated similarly to the outer shell 120 and is designed to be inserted into the outer shell 120. According to some exemplary embodiments, the inner liner may be a different geometric or non-geometric shape than the outer shell 120 without departing from the scope and spirit of the exemplary embodiment. Once the inner liner is disposed within the outer shell 120, the space, as mentioned above is formed therebetween.
The insulation layer (not shown) is disposed within the space formed between the outer surface of the inner liner and the inner surface of the outer shell 120. The insulation layer is fabricated either prior to the liner being placed within the outer shell 120 or is formed while the liner is already positioned within the outer shell 120. In the embodiment where the insulation layer is formed prior to the liner being placed within the outer shell 120, the insulation layer is formed using expanded polystyrene foam. Once the insulation layer is formed, the insulation layer is positioned within the outer shell 120 and is friction fitted or snapped therein. Once the insulation layer is secured to the outer shell 120, the liner is then positioned within the insulation layer and secured to the outer shell 120 along the upper edges using a lip formed along the upper edges of the inner liner or secured to the insulation layer.
Alternatively, in the embodiment where the insulation layer is formed while the liner is already disposed within the outer shell 120 and the space is formed between the outer surface of the liner and the inner surface of the outer shell 120, the insulation layer is formed by injecting a polyurethane foam into the space formed between the inner liner and the outer shell 120, thereby allowing the foam to expand and fill in the space formed between the liner and the outer shell 120. Once the polyutrethane foam dries, the insulation layer is formed and is adhered to both the outer surface of the liner and the inner surface of the outer shell 120. Although certain materials have been described in forming the two embodiments of the insulation layer, other known materials may be used that provides insulation capabilities.
The body 110 also includes one or more handles 140. According to some exemplary embodiments, the one or more handles 140 may be formed into the outer surface of the outer shell 120, as is known in the prior art. For example, one handle 140 may be formed along at least one end or side of the outer shell, while wheels are positioned at the lower opposite end or side to assist a user in carrying the portable cooler 100 at one end and rolling it along. In another example, one handle 140 may be formed along at least one end or side of the outer shell, while another handle 140 is formed along at least one opposite end or side of the outer shell allowing one or more users to carry the portable cooler 100 using the handles 140 from one location to another. According to other exemplary embodiments, the handles 140 are handle assemblies that are coupled to at least one end or side of the outer shell in lieu of the formed handles as mentioned above.
Although certain features of the body 110 have been described above, the body 110 may have additional features that have not been described, such as a drain port 112 formed at the lower portion of the body 110. The lack of description for any additional features of the body 110 is not meant to limit the scope and spirit of the present embodiments as described herein.
Although certain features of the lid 150 have been described above, the lid 150 may have additional features that have not been described, such as a ruler 156 or cup holders (not shown) that is formed along the top 155 of the lid 150. The lack of description for any additional features of the lid 150 is not meant to limit the scope and spirit of the present embodiments as described herein.
The latch 180 is fabricated using at least a thermoplastic rubber material, or TPR material. In certain exemplary embodiment, the thermoplastic rubber material includes certain ultraviolet and/or chemical resistant additives to prevent dry rotting, whereby these additives are known in the prior art. The latch 180 is fabricated in three components according to the embodiment described herein, but the latch 180 may be fabricated in grater or fewer components according to other exemplary embodiments. According to the exemplary embodiment, the latch 180 includes an upper component 182, a lower component 186, and an intermediate component 190 that couples the upper component 182 to the lower component 186.
The upper component 182 and lower component 186 are molded components but can be fabricated in other manners. The upper component 182 and lower component 186 are fabricated using polypropylene, but may be fabricated using other materials, preferably of a durable material and which can be coupled to the intermediate component 190, such as a blended or some other material. The upper component 182 is a thin rectangular shape and is smaller in size than the lower component 186, which is a wider rectangular or square-shaped component. However, in other exemplary embodiments, the upper component 182 and lower component 186 may be a different shape and size and may also be sized where the upper component 182 is larger in size than the lower component 186. The upper component 182 has two apertures 183 formed therein separated a distance apart from one another, where the apertures 183 are dimensioned to receive a screw 184 or other fastener for fixedly coupling the upper component 182 to the lid's 150 longitudinal side 151. According to other exemplary embodiments, the number of apertures 183 may be greater or fewer than two. The lower component 186 has an opening 187 formed therein that is dimensioned to receive the respective protrusion 129 for removably coupling the lower component 186 to the body's 110 longitudinal side 121. Hence, a user can release the lower component 186 from the protrusion 129, thereby opening the lid 150 from the body 110. According to other exemplary embodiments, the number of openings 187 may be greater than one, but generally corresponds to the number of protrusions 129 used for coupling the lower component 186 to the body's 110 longitudinal side 121. In certain other exemplary embodiments, the upper component 182 may be coupled to the lid's 150 longitudinal side 151 using an opening and complementary protrusion that may be formed into the lid 150, similar to how the lower component 186 is coupled to the body 110 without departing from the scope and spirit of the exemplary embodiments.
The intermediate component 190 is fabricated using a thermoplastic rubber material, which is durable and is flexible. Although the intermediate component 190 is fabricated using thermoplastic rubber material, other materials including, but not limited to, thermoplastic elastomer (TPE), silicone, or other similar flexible materials, may be used. This intermediate portion 190 is more easily seen with respect to
To unlock the latch 180, a user pulls the lower component 186 such that the lower component pulls away from the protrusion 129 in a direction away from the outer shell 120. The lower component 186 can continue to move away from the outer shell 120 as the intermediate component 190 goes into a more stressed state. The lower component 186 can continue to move away from the outer shell 120 until a portion of the intermediate component's 190 second portion 396 comes into contact with a portion of the intermediate component's 190 first portion 392. Once the intermediate component's 190 second portion 396 comes into contact with a portion of the intermediate component's 190 first portion 392, the latch is in a maximum open position 320. This intermediate component's 190 second portion 396 coming into contact with the intermediate component's 190 first portion 392 is a built-in auto stop feature of the latch 180 that prevents over stretching of the intermediate component 190, or in more particular, prevents the over stretching of the intermediate component's 190 middle portion 394. When in the maximum open position 320, the intermediate component's 190 middle portion 394 is curved and in a maximum stressed state. By having the auto stop feature and preventing over stretching of the intermediate component 190, the latch 180 will have many more times that the latch 180 can be open and closed without the middle portion 394 of the intermediate portion 190 breaking.
The auto stop feature of the latch 180 can be designed by manipulating the thickness of either or both of the first portion 392 and the second portion 396 of the intermediate component 190. The maximum angle 398 occurs when the latch 180 is in the maximum open position 320. This maximum angle 398 is designed to be about fifty degrees. In other exemplary embodiments, the maximum angle 398 is designed to be in a range from about thirty degrees to about sixty degrees. In yet other exemplary embodiments, the maximum angle 398 is designed to be in a range from about twenty-five degrees to about sixty-five degrees. In further exemplary embodiments, the maximum angle 398 is designed to be in a range from about fifteen degrees to about eighty degrees. Although this angle has been provided in several different ranges, the auto stop maximum angle can at any angle greater than five degrees without departing from the scope and spirit of the exemplary embodiments. Further, in some exemplary embodiments, the upper component 182, the lower component 186, and the intermediate component 190 can be provided in a vast variety of colors, where all of the upper component 182, the lower component 186, and the intermediate component 190 are the same color or where at least one of the upper component 182, the lower component 186, and the intermediate component 190 is a different color from at least one of the others 182, 186, 190,
Accordingly, many modifications and other embodiments set forth herein will come to mind to one skilled in the art to which insulated coolers pertain, and more specifically to the latches of the coolers, having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that these insulated coolers are not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of this application. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
The present application claims priority under 35 U.S.C. § 119 to U.S. Provisional Application No. 62/967,199, entitled “Cooler Latch”, filed on Jan. 29, 2020, the entirety of which is incorporated by reference herein.
| Number | Date | Country | |
|---|---|---|---|
| 62967199 | Jan 2020 | US |
