COOLER WITH OPEN VOLUME CONTROL AND CONTENTS SECUREMENT
A cooler with an open volume minimization system suitable for use in harsh conditions with extreme motions such as an off-road vehicle. The open volume minimization system includes a contents engagement portion that may extend from a cooler sidewall and/or a lid to reduce the open volume and constrain the contents in the cooler. Manual or powered means can lower and retract the contents engagement portion. The engagement portion may be part of an expandable bladder system integrated with the cooler. Inflation of the bladder moves the engagement portion to the contents minimizing sloshing by reducing the open volume in the interior and by securing the contents. Elastomeric strap latches under tension may keep the lid securely latched.
This invention relates to enclosed or semi-enclosed containers. More specifically, the present invention relates to a cooler with adjustable open volume control and contents stabilization.
BACKGROUND OF THE INVENTIONGenerally, enclosed or semi-enclosed thermally insulated containers are used to transport, among other items, food and beverage for consumption at a user's convenience. The thermal properties of such containers allow for a target temperature to be maintained for an item for durations significantly longer than if no such container were implemented. These containers are often referred to as coolers, portable fridges, frigerators, refrigerators, fridge-freezers, portable refrigerators, cold-storage boxes, iceboxes, chillers, cold storage, or thermally insulated containers.
These aforementioned coolers are typically filled at the beginning of use with an allotment of contents of the cooler, which can include but is not limited to any combination of food stuff(s), beverage(s), or other items that a user may want to keep at a preferred temperature then later filled with an appropriate cooling medium(s), i.e. ice-block(s), ice-cube(s), ice-pack(s), or the like.
Furthermore, with the growing popularity of personal recreational vehicles such as the industry leading POLARIS RZR sold by Polaris Inc., long distance road trips, overland expeditions, and the ever-rising demand for taking a boat out on a lake, there is a further demand for coolers adapted to these vehicles and usages.
Furthermore, during extreme temperatures, it is important for a user's comfort and pleasure that their cooler maintains an appropriate temperature and containment so that they can enjoy, at their leisure, the food, beverage, or chilled item. With recent improvements in cooler technology, such as coolers like POLARIS NORTHSTAR® COOLER sold by Polaris Inc., maintaining a proper temperature within a cooler is easier than ever.
SUMMARY OF THE INVENTIONThe inventor has recognized that if a cooler is not filled to an appropriate volume, or once the contents of the cooler; food(s), beverage(s), other item(s), or ice, other cooling material(s) have been depleted and/or melted, there is unoccupied volume, extra room, within the cooler interior above the contents, so that the contents of the cooler can move, slosh, or otherwise thump around when the cooler is in motion. Particularly in the context of off-roading vehicles, the inventor has recognized this is highly undesirable to have a high open volume to contents volume in the interior of a cooler as it may cause beverage or food spillage, dented cans, broken bottles, or water-soaked Wagyu A5 steak. Moreover, in many conventional coolers, the violent movement of the contents with respect to the cooler can cause opening of the cooler lid and ejection of contents. Moreover, in cases where the cooler is large with respect to the vehicle, and carried in an open region, such as the back cargo area of a side by side recreational vehicle, or on a motorcycle, even where the cooler is well secured to the vehicle, the handling characteristics of the combination vehicle and cooler can be affected with shifting of the contents in the cooler. Where a cooler is form fit to the cargo area of a vehicle, it may be maximally sized for contents for an extending camping trip. Where the user wants to have simple beverages or food for a day trip, the ratio of open volume to contents volume may be excessively high creating a significant undesirable “sloshing” condition. The inventor has also recognized that the shifting of, sloshing of, contents in a cooler that is not well secured in a vehicle can increase the probability of the cooler shifting, moving, dislocating, and potentially exiting the vehicle. The inventor has recognized that a solution would be desirable to address these issues, in particular providing a cooler with a means to minimize the ratio of open volume to contents volume in the interior of the cooler accommodating variable contents volumes. Further, said means will ideally restrain the contents of the cooler and can accommodate variable and changing contents volume. The inventor has devised such means that renders the cooler contents generally motionless with respect to the cooler minimizing potential damage to the cooler contents and minimizing the shifting, moving, and/or potential dislocating the cooler with respect to an off road vehicle.
In embodiments, specific means are provided to minimize the open volume in a cooler above the contents and to restrain cooler contents, the means may be variable in size, easily or automatically adjustable, so that with a change in the volume of the stored contents during use and/or transportation, securement of the contents is continually maintained.
Embodiments of the invention are directed to a system for minimizing open volume in a rigid walled transportable cooler, that is, the non-contents open area above the contents in the storage area of the cooler, effectively minimizing the ratio of open volume to stored contents volume. The contents generally includes the beverages, food, ice, ice packs, and the like. Ice may be constantly melting during use/storage reducing the volumetric size of the contents. In embodiments, the cooler has a container portion formed of a rigid bottom and rigid side walls defining an open top. A hinged cover closes the open top. The bottom and sidewalls of the container portion generally being unitary, that is with an exterior and interior polymer surface walls and with insulating material between the exterior and interior polymer surface walls. In embodiments, the system for minimizing open volume comprises an expandable and retractable volume occupying system. In embodiments, the system for minimizing open volume comprises an inflatable and deflatable volume occupying system, for example one or more inflatable bladders or sacks. In embodiments, portions of the system are integrated with the cover and extend adjustably downward from the cover. In embodiments, the system may have an extending and retracting portion, such as a plate that is operable from exterior the closed cooler or that automatically extends as contents volume decreases. In embodiments, the inflated bladders are maintained in contact with the contents by the lid, which is securely latched utilizing elastomeric latch straps, secured under tension. In embodiments, alternate latches that do not release without operator actuation may also be utilized.
In embodiments, the cooler is specifically adapted to be used in high shock loading environments, such as in off-roading applications where the cooler is readily securable to a cargo area in a recreational vehicle, such as a RZR all-terrain vehicle or a Ranger utility vehicle. The cooler container portion may have a flange formed at the upper margins of the side walls and the lid conformingly shaped to the flanged open top. The flange and/or lid having attachment locations for tie downs or bungees for securement to the recreational vehicle. The lid latchable to the container portion with elastomeric straps which operate to maintain to the lid closed with the added lid opening forces provided by the system for maintaining minimal open volume. The container portion of the cooler having side wall recesses with which may receive pneumatic or fluid pumps and/or control means.
In embodiments, the means for minimizing open volume may be a bladder system with an expandable bladder providing minimal open volume in the cooler. The bladder system includes at least one material filled or fillable bladder, wherein at least a portion of the at least one material filled or fillable bladder remains either in contact with, or generally close to, the contents of the cooler in order to prevent unwanted motion of said contents. In embodiments, the expandable bladder system includes at least one material valve system allowing a flow of material into the material fillable bladder to expand the material fillable bladder to the appropriate size. In another embodiment of the invention, the means for minimizing open volume in the cooler is provided by a movable plate or panel member that allows a user to secure the contents of the cooler by applying a compressive pressure on the contents between the plate or panel member and the base, lid, or one of the sidewalls of the cooler. In embodiments the movable plate or panel member is combined with an expandable bladder.
In embodiments, the interior cavity of the cooler is defined interior walls that are movable inwardly and retractable. The side walls and bottom wall may be joined by flexible water impermeable sheet material that is closed at the top wall margins and the bottom wall. The interior is defined by a continuous wall of the flexible material but one or more walls have flexible portions that accommodate the inward and outward movement of the walls provide a reduction in the open volume of the container portion.
In embodiments, the material used within the expandable bladder system may be flowable material, such as fluid, such as air, or generally incompressible fluid, such as liquids, or a granular or beaded material, or a combination of these. The material may be a coolant provided at a below ambient temperature, an insulator with low heat conductivity or other flowable materials. In embodiments, the expandable bladder system may include a plurality of material fillable bladders. In embodiments, a material filling system allows a user to pass material through the material valve system into the material bladder thereby expanding the volume of the bladder. The material filling system can either be manually, electrically, hydraulically, or pneumatically operated to move the specified material from outside of the material fillable bladder to inside the material fillable bladder. The material filling system may be by operator actuation or by automatic means.
In embodiments, the expandable bladder or bladder system may be integrated into the lid, one or a plurality of the side walls, or the base of the cooler within the cooler cavity, or any combinations thereof. In embodiments, the expandable bladder system comprises a movable divider configured to divide the cavity into a plurality of compartments, for example a contents compartment and a compartment occupied by a filled bladder. Additionally, a bladder may be added above the contents in the contents compartment. The lid securely latchable to the container portion with elastomeric straps for tightly constraining the bladder system and contents in the cooler.
In embodiments, the rigid cooler can have rigid exterior walls and have an interior or cavity defined in part by one or more movable interior walls that can minimize the non-contents volume of the cooler. The movable walls can be the side walls or a wall movable from the top of the cooler, as part of the lid. In embodiments, the fillable bladders may have open cell compressible foam as a material or other compressible material such that evacuating the air in the bladder reduces the volumetric size of the bladder. Such bladders then can be “inflated by reducing the vacuum on the bladder, for example allowing the air pressure in the foam to return to atmospheric air pressure in the previously compressed material thereby allowing the compressed material to expand filling the non-contents volume of the cooler. Rather than using a compressor to inflate the fillable bladders, a suction or vacuum pump is utilized to deflate the fillable bladders.
In embodiments, the expandable bladder system includes a means to allow for continuously monitoring and pressurizing the material fillable bladder during use or operation which may allow the minimization of open volume to occur automatically as the volume of the contents diminishes, for example as ice melts. In embodiments, as the contents volume contracts and the open volume increases, a bladder with a specific fixed volume that fills the otherwise open volume above the contents,
In embodiments, the open volume minimization system is one or more plate-like members. The plate like member applies a compressive force between the plate-like member and one or a plurality of the sidewalls, lid, or base of the cooler. In such an embodiment, a translation member may be utilized to help direct the motion of such a plate-like member to move in a desired fashion. The plate like member may seat on the contents thereby minimizing the open space above the contents. In embodiments, the positioning of the plate like member and downward movement may be facilitated by gravity. The plate like member may be placed at the top of the cooler contents when it is filled and as the volume of the contents decreases, such as from ice melting, the plate like member may move downward by gravity such as by sliding or by linkages. The mechanisms supporting the plate like member can have a impediment to the retraction of the plate, such as a ratchet mechanism, that upward movement of the plate like member during transport is precluded or inhibited. The mechanism may be configured such that the rough ride of the vehicle into which the cooler is placed and/or mounted, facilitates the downward movement of the plate towards the bottom of the cooler.
In embodiments, an open volume minimization system is an expandable bladder system capable of being used in many instances outside of coolers, in uses such as shipping and receiving, use in semi-trucks refrigerated or otherwise, or any situation where you do not want items to move within a cavity.
A feature and advantage of embodiments of the invention is that the open volume above the contents of the cooler as the contents are reduced in volume by usage, ice melting, compacting of the contents, is minimized, securing the contents therein, minimizing sloshing and movement, protecting the contents from damage.
A feature and advantage of embodiments is that with the minimization of the open volume above the contents, particularly with air bladders, the efficiency of the cooler is improved by minimizing air flow and conduction between the chilled contents and the lid and sidewall interior surfaces.
A feature and advantage of the invention is that coolers with the means for securing the contents are highly suitable for use in coolers anchored within off road vehicles. Moreover, such coolers typically have high integrity latching systems, for example, coolers that are “bear proof” due to the strength of the cooler walls and the robust latching systems with elastomeric strap latches. These are highly suitable for using open volume minimization systems, such as inflatable bladders, in that bladders may be inflated in the latched cooler and even where there is force being exerted on the inside surface of the lid of the cooler, due to inflation of the bladder, the cooler remains closed and the cooler contents secured. In embodiments, systems providing open volume minimization systems may utilize subsystems of the off road vehicle for providing power for operating the open volume minimization systems.
In embodiments, a cooler having open volume minimization means comprises a container portion and a hinged lid with a latch, the container portion having sidewalls with an interior polymer wall and an exterior polymer wall and foam insulation therebetween and having an empty open volume from 12 quarts (11.4 liters) to over 400 quarts (378.6 liters). In embodiments, the cooler having an empty open volume of 30 quarts (28.4 liters) to 100 quarts (94.6 liters). In embodiments, the cooler having an empty open volume of from 40 quarts (37.9 liters) to 55 quarts (52.0 liters). In embodiments, the cooler having an empty open volume of less than to 55 quarts (52.0 liters). “Empty open volume” when used herein means with the cover or lid closed and the cooler empty. In embodiments, the open volume minimization means may reduce the open volume of the cooler by at least 50%. In embodiments, the open volume minimization means may reduce the open volume of the cooler by at least 70%. In embodiments, the open volume minimization means may reduce the open volume of the cooler by at least 80%. In embodiments, the open volume minimization means may reduce the open volume of the cooler by at least 90%.
Referring to
The contents 148 may be canned beverages, food, ice, ice packs, coolant packs and the like. The actuation portion 150 may be a pneumatic or fluid pump, or other material pump as described below, or may be a mechanical mechanism powered by a motor or manually operated, that extends and retracts the engagement portion 146. The actuation portion may be exteriorly mounted on the cooler, may be within the lid, or sidewalls, or may be in the interior. The power and/or control unit 151 may be an air pump, have control and processing circuitry, may have a user interface, and have batteries or connection means for external power. A sensor 153 or sensors may be positioned in the interior of the cooler, for example in association with the actuation portion, to detect the status of the contents restraint system and/or status of the contents, for example the position of the engagement member 146, the pressurization of an actuator portion configured as a pressurized bladder, the existence of motion in the cooler interior, and/or temperature. The sensor 153 may have a connection, such as by wiring 154, to the power and/or control unit to provide data to display, cause a response such as further actuation of the actuator portion and movement of the contents engagement portion 146. The lower engagement portion 146 can be part of a bladder, a plate, a movable wall or a combination of same as described below. Also, connection means 160 may be provided for connecting to vehicle power or other external power and means 164 for connecting to vehicle compressed air or other source of air pressure or other media, including orally blown-in air, may be provided. See, in particular,
Referring to
Referring to
The material fillable bladder 320, particularly when filled, such as by inflation with air, may be of any shape and size suitable to fill the open space 201 with the cooler. The material fillable bladder 301 may be circular, spherical, rectangular prism, cuboid, cylindrical, pyramid, or any other three-dimensional shape. Ideally the material fillable bladder 320, when filled, would have a shape similar to that of the cooler cavity 101 in which it is to be used. It is also contemplated that the material fillable bladder 301 is able to expand to at least the volume within the cooler 101 when no contents 203 are in the cooler 100.
This multi-bladder 360 system allows a user to make minute adjustments to the first 366 or second bladders 368 as the contents within the cooler changes. In embodiments, if the multi-bladder 600 system was placed inside a portable powered refrigerator which were to be fitted and wired in the back of a user's off road vehicle, the system could allow for a transfer of circulated coolant through one or the other of the first or second material bladders 601, 603 via the coolant system already existing within the refrigerator.
The bladders of
In another embodiment, the multiple material fillable bladders 510, 512, 514, 516 can be connected to an air pressure source, which may either be part of a vehicle which is carrying the cooler or can be an accessory. In embodiments, the air pressure source may be attached to the cooler or an integral part of the cooler. See
Referring to
Referring to
Material fillable bladders of the expandable bladder systems 400, 506, 608, 707, 841, may be filled with fill material through a variety of methods depending upon the configuration of the material valve system. The expandable bladder system's material valve system 305 may include an oral inflation valve, which allows a user to blow air directly into the bladder through a user's lungs, or through use of a pump.
The plate or panel member 930 of
Referring to
All of the above patents and patent publications are incorporated herein by reference in their entirety for all purposes, except for express definitions and patent claims contained therein.
The invention is not restricted to the details of the foregoing embodiment (s). The invention extends to any novel one, or any novel combination, of the features disclosed in this specification (including any incorporated by reference references, any accompanying claims, abstract and drawings), or to any novel one, or any novel combination, of the steps of any method or process so disclosed. The above references in all sections of this application are herein incorporated by references in their entirety for all purposes.
While the aforementioned particular embodiments of the present invention have been shown and described, it will be obvious to those skilled in the art that, based upon the teachings herein, that changes and modifications may be made without departing from this invention and its broader aspects. Therefore, the appended claims are to encompass within their scope all such changes and modifications as are within the true spirit and scope of this invention. It will be understood by those with skill in the art that if a specific number of an introduced claim element is intended, such intent will be explicitly recited in the claim, and in the absence of such recitation no such limitation is present. For non-limiting example, as an aid to understanding, the following appended claims contain usage of the introductory phrases “at least one” and “one or more” to introduce claim elements. However, the use of such phrases should not be construed to imply that the introduction of a claim element by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim element to inventions containing only one such element, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an”; the same holds true for the use in the claims of definite articles.
Claims
1. A cooler with an open volume minimization system, the cooler comprising: a container portion with a plurality of insulated sidewalls an insulated bottom wall defining an upper opening, an insulated lid hinged to the container portion, and a latch that secures the lid to the container portion in a closed position, the insulated sidewalls comprising a polymer exterior wall, a polymer interior wall and a foam insulative material therebetween, the closed lid and container portion defining an open interior with a volume in the range of 30 quarts (28.4 liters) to 100 quarts (94.6 liters), the volume minimization system comprising:
- an expandable bladder system attached to at least one of the lid and a sidewall of the cooler, the expandable bladder system comprising at least one material fillable bladder and at least one valve system for controlling material entering and exiting the bladder,
- wherein the at least one material fillable bladder is positioned within the open interior of the cooler, and
- wherein the at least one material fillable bladder is configured to expand and retract within the open interior.
2. The cooler with the open volume minimization system of claim 1, wherein the at least one material fillable bladder and valve system are configured for using air as the material for expansion and contraction of the bladder.
3. The cooler with the open volume minimization system of claim 2, comprising a plurality of bladders.
4. The cooler with the open volume minimization system of claim 3, wherein the cooler has interior wall surfaces with hook and loop material thereon and the plurality of bladders each have cooperating hook and loop material thereon for attachment of each of the plurality of bladders to the interior wall surfaces of the cooler.
5. The cooler with the open volume minimization system of claim 1, wherein the expandable bladder system comprises a panel that is urged toward the bottom wall of the cooler for engagement of contents in the cooler.
6. The cooler with the open volume minimization system of claim 1, wherein the open volume minimization system may reduce the open volume of the cooler by at least 50%.
7. A cooler with an open volume minimization system comprising:
- a cooler comprising a lid; a plurality of sidewalls; and a base, the cooler having an open interior;
- an expandable bladder system comprising at least one bladder attached to one of the lid and container portion, the bladder inflatable and deflatable;
- the bladder having at least one panel positioned to engage contents in the cooler when the bladder is inflated; and
- inflation means are mounted to or extend from cooler.
8. The cooler with the open volume minimization system of claim 7, wherein the inflation means comprises an air pump attached to the cooler, wherein the air pump is one of manually or electrically operatable.
9. The cooler with the open volume minimization system of claim 8, wherein the expandable bladder system may reduce the open volume of the cooler by at least 50%.
10. The cooler with the open volume minimization system of claim 8, further comprising a sensor for monitoring air pressure in the bladder.
11. The cooler with the open volume minimization system of claim 8, further comprising a plurality of additional bladders that are inflatable by the air pump.
12. The cooler with open volume minimization system of claim 11, wherein the expandable bladder system includes a plurality of plates or panels, at least one plate or panel associated with each bladder.
13. The cooler with open volume minimization system of claim 7, wherein the plates or panels and bladders are configured to provide an open interior that when the bladders are inflated the open interior that tapers upwardly.
14. A cooler with open volume minimization system comprising:
- a cooler comprising a lid; a plurality of sidewalls; and a base, all defining an open interior with an open and closable top, the cooler having a capacity of from 12 quarts (11.4 liters) to over 400 quarts (378.6 liters), the cooler having means; and
- a contents securement system comprising a plate member;
- an extendable and a retractable portion attached to the lid and the plate member.
15. The cooler with open volume minimization system of claim 14, wherein the plate member has a stowed position at the lid.
16. The cooler with open volume minimization system of claim 14, further comprising a manual crank and the extendable and retractable portion is configured as a screw and nut mechanism connected to the manual crank.
17. The cooler with open volume minimization system of claim 14, comprising an electric motor connecting to the extendable and retractable portion.
18. The cooler with open volume minimization system of claim 14, comprising a manual air pump and wherein the extendable and retractable portion is a bladder operative connected to the manual air pump.
19. The cooler with open volume minimization system of claim 14 having apertures at an upper rim of the container portion for securement of the cooler to a vehicle.
20. The cooler with open volume minimization system of claim 14, wherein the open volume minimization system may reduce the volume of the cooler by at least 50%.
21-46. (canceled)
Type: Application
Filed: Sep 19, 2022
Publication Date: Mar 23, 2023
Inventor: James J. Endrizzi (Plymouth, MN)
Application Number: 17/947,532