Cooler having removable wheel assembly

Abstract

A cooler includes a main body which includes a base, an upper rim, and one or more cooler walls extending therebetween. The cooler in some embodiments further includes a removable wheel assembly which includes two coaxial wheels, and an axle. The two coaxial wheels are removably securable to the axle. The cooler still further comprises a wheel fastening system configured to secure the removable wheel assembly to the base of the main body which includes a mount, a clip hingedly connected to the mount, and a locking clasp configured to lock the clip into a closed position to secure the wheel assembly. The cooler yet further comprises a lid including two wheel storage recesses, each being sized and dimensioned to receive and retain one of the coaxial wheel of the wheel assembly, and an axle storage recess sized and dimensioned to receive and retain the axle of the wheel assembly.

Claims

1. A single-walled expandable and collapsible cooler, comprising: (a) a base defining a bottom portion of the cooler; (b) an upper rim defining an upper portion of the cooler; and (c) a collapsible cooler wall extending between and attached to said base and said upper rim and surrounding an interior storage space of the cooler, the cooler wall comprising a flexible elastomeric membrane that includes a plurality of hinge lines at which the membrane is configured to bend such that the membrane is transitional between a collapsed configuration and an expanded configuration; (d) wherein the cooler is transitional between different stable configurations of the cooler by bending of the membrane along said hinge lines comprising, (i) an expanded configuration for use of the cooler, (ii) a collapsed configuration during nonuse of the cooler, (iii) a first partially expanded configuration for use of the cooler, the interior storage space of the cooler when the cooler wall is in the first partially expanded configuration being greater than the interior storage space of the cooler when the cooler wall is in the collapsed configuration, but being less than the interior storage space of the cooler when the cooler wall is in the expanded configuration, and (iv) a second partially expanded configuration for use of the cooler, the interior storage space of the cooler when the cooler wall is in the second partially expanded configuration being greater than the interior storage space of the cooler when the cooler wall is in the first partially expanded configuration, but being less than the interior storage space of the cooler when the cooler wall is in the expanded configuration; and (e) wherein the membrane comprises an outer surface located on the exterior of the cooler and an inner surface located in the interior storage space of the cooler; (f) wherein the membrane defines the interior storage space of the cooler.

2. The cooler of claim 1, wherein membrane comprises peripheral portions that nest within each other when the membrane is in the collapsed configuration.

3. The cooler of claim 2, wherein the nested peripheral portions are generally arranged in a common plane.

4. The cooler of claim 1, wherein the membrane tapers outwardly in extending from the upper rim to the base, and wherein the periphery of the membrane proximate the upper rim is greater than the periphery of the membrane proximate the base.

5. The cooler of claim 1, wherein the membrane tapers inwardly in extending from the upper rim to the base, and wherein the periphery of the membrane proximate the upper rim is less than the periphery of the membrane proximate the base.

6. The cooler of claim 1, wherein the membrane tapers inwardly in extending from the upper rim, the membrane tapers inwardly in extending from the base, and a middle section of the membrane includes a periphery that is less than either of the periphery of the membrane proximate the upper rim and the periphery of the membrane proximate the base.

7. A single-walled expandable and collapsible cooler, comprising: (a) a base defining a bottom portion of the cooler; (b) an upper rim defining an upper portion of the cooler; and (c) a collapsible cooler wall extending between and attached to said base and said upper rim and surrounding an interior storage space of the cooler, the cooler wall comprising a flexible elastomeric membrane formed from silicone rubber that includes a plurality of hinge lines at which the membrane is configured to bend such that the membrane is transitional between a collapsed configuration and an expanded configuration, each hinge line of the plurality of hinge lines being generally less thick than other portions of the membrane; (d) wherein the cooler is transitional between an expanded configuration for use of the cooler, and a collapsed configuration during nonuse of the cooler, by bending of the membrane of the cooler wall along the hinge lines, each of the configurations being a stable configuration of the cooler; and (e) wherein the membrane comprises an outer surface located on the exterior of the cooler and an inner surface located in the interior storage space of the cooler; (f) wherein the membrane defines the interior storage space of the cooler.

8. The cooler of claim 7, wherein the membrane tapers outwardly in extending from the upper rim to the base, and wherein the periphery of the membrane proximate the upper rim is greater than the periphery of the membrane proximate the base.

9. The cooler of claim 7, wherein the membrane tapers inwardly in extending from the upper rim to the base, and wherein the periphery of the membrane proximate the upper rim is less than the periphery of the membrane proximate the base.

10. The cooler of claim 7, wherein the membrane tapers inwardly in extending from the upper rim, the membrane tapers inwardly in extending from the base, and a middle section of the membrane includes a periphery that is less than either of the periphery of the membrane proximate the upper rim and the periphery of the membrane proximate the base.

11. The cooler of claim 7, wherein membrane comprises peripheral portions that nest within each other when the membrane is in the collapsed configuration.

12. A single-walled expandable and collapsible cooler, comprising: (a) a base defining a bottom portion of the cooler; (b) an upper rim defining an upper portion of the cooler; and (c) a collapsible cooler wall extending between and attached to said base and said upper rim and surrounding an interior storage space of the cooler, the cooler wall comprising a flexible elastomeric membrane formed from silicone rubber that includes a plurality of hinge lines at which the membrane is configured to bend such that the membrane is transitional between a collapsed configuration and an expanded configuration, each hinge line of the plurality of hinge lines being generally less thick than other portions of the membrane; (d) wherein the cooler is transitional between an expanded configuration for use of the cooler, and a collapsed configuration during nonuse of the cooler, by bending of the membrane of the cooler wall along the hinge lines, each of the configurations being a stable configuration of the cooler; and (e) wherein the membrane comprises an outer surface located on the exterior of the cooler and an inner surface located in the interior storage space of the cooler; (f) wherein the membrane defines the interior storage space of the cooler.

13. The cooler of claim 12, wherein the membrane tapers in extending from the upper rim to the base, and wherein the periphery of the membrane proximate the upper rim is greater than the periphery of the membrane proximate the base.

14. The cooler of claim 12, wherein the membrane tapers in extending from the upper rim to the base, and wherein the periphery of the membrane proximate the upper rim is less than the periphery of the membrane proximate the base.

15. The cooler of claim 12, wherein the membrane tapers one way in extending from the upper rim, the membrane tapers another way in extending from the base, and a middle section of the membrane includes a periphery that is less than either of the periphery of the membrane proximate the upper rim and the periphery of the membrane proximate the base.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) One or more preferred embodiments of the present invention now will be described in detail with reference to the accompanying drawings, wherein the same elements are referred to with the same reference numerals.

(2) FIG. 1 is a perspective view of a preferred embodiment of a cooler having a removable wheel assembly in accordance with one or more aspects of the present invention.

(3) FIG. 2A is a perspective view of the cooler of FIG. 1 with the lid in a closed orientation.

(4) FIG. 2B is a perspective view of the cooler of FIG. 1 shown without the removable wheel assembly.

(5) FIG. 3 is a bottom view of the cooler of FIG. 1.

(6) FIG. 4 is a detailed bottom view of the cooler of FIG. 1.

(7) FIG. 5 is a detailed side view of the cooler of FIG. 1.

(8) FIG. 6 is a perspective view of the cooler of FIG. 1.

(9) FIG. 7 is a perspective view of the cooler of FIG. 1.

(10) FIG. 8 is a perspective view of the cooler of FIG. 1.

(11) FIG. 9 is a bottom view of the cooler of FIG. 1.

(12) FIG. 10A is a front perspective view of the removable wheel assembly of the cooler of FIG. 1.

(13) FIG. 10B is a front view of the removable wheel assembly of FIG. 10A.

(14) FIG. 11A is a front view of the removable wheel assembly of the cooler of FIG. 1.

(15) FIG. 11B is a side view of the removable wheel assembly of FIG. 11A.

(16) FIG. 11C is a front view of the removable wheel assembly of FIG. 11A.

(17) FIG. 11D is a side view of the removable wheel assembly of FIG. 11A.

(18) FIG. 11E is a front view of the removable wheel assembly of FIG. 11A.

(19) FIG. 12 is a perspective view of the cooler of FIG. 1.

(20) FIG. 13 is a perspective view of a preferred embodiment of a cooler having a removable wheel assembly and a removable telescoping handle assembly in accordance with one or more aspects of the present invention.

(21) FIG. 14 is a perspective view of the cooler of FIG. 13.

(22) FIG. 15 is a perspective view of the cooler of FIG. 13.

(23) FIG. 16 is a perspective view of the cooler of FIG. 13.

(24) FIG. 17 is a perspective view of the cooler of FIG. 13.

(25) FIG. 18 is a perspective view of a cooler in an expanded configuration in accordance with one or more aspects of the present invention.

(26) FIG. 19 is a side elevational view of a membrane representative of each of the inner and outer collapsible walls of the cooler of FIG. 18.

(27) FIG. 20 is a top plan view of the membrane of FIG. 19.

(28) FIG. 21 is a cross-sectional view of the membrane of FIG. 20 taken along line 4-4.

(29) FIG. 22 is a top plan view of the cooler wall of the cooler of FIG. 18.

(30) FIG. 23A is a perspective view of the cooler of FIG. 20 in a fully expanded configuration with the lid closed.

(31) FIG. 23B is a perspective view of the cooler of FIG. 23A in a partially collapsed configuration.

(32) FIG. 23C is a perspective view of the cooler of FIG. 23A in another partially collapsed configuration.

(33) FIG. 23D is a perspective view of the cooler of FIG. 23A in a fully collapsed configuration.

(34) FIG. 24 is a perspective view of a variation of the cooler of FIG. 23A.

(35) FIG. 25 is cross-sectional view of a cooler wall and base in accordance with a second preferred embodiment of the invention.

(36) FIG. 26 is a perspective view of a cooler in accordance with a third preferred embodiment of the invention.

(37) FIG. 27 is a perspective view of a cooler in accordance with a fourth preferred embodiment of the invention.

(38) FIG. 28A is a top plan view of a cooler in accordance with a fifth preferred embodiment of the invention.

(39) FIG. 28B is a top plan view of another cooler in accordance with the fifth preferred embodiment of the invention.

(40) FIG. 29A is a perspective plan view of a cooler in accordance with a sixth preferred embodiment of the invention.

(41) FIG. 29B is a side view of another cooler in accordance with the sixth preferred embodiment of the invention.

(42) FIG. 30 is a perspective view of a cooler in accordance with a seventh preferred embodiment of the invention.

(43) FIG. 31 is a perspective view of a cooler in accordance with an eighth preferred embodiment of the invention.

(44) FIG. 31A is a perspective view of the cooler of FIG. 31 in a fully expanded configuration with the lid closed.

(45) FIG. 31B is a perspective view of the cooler of FIG. 31A in a partially collapsed configuration.

(46) FIG. 31C is a perspective view of the cooler of FIG. 31A in another partially collapsed configuration.

(47) FIG. 31D is a perspective view of the cooler of FIG. 31A in a fully collapsed configuration.

(48) FIG. 32 is a perspective view of a cooler in accordance with a ninth preferred embodiment of the invention.

(49) FIG. 32A is a perspective view of the cooler of FIG. 31 in a fully expanded configuration with the lid closed.

(50) FIG. 32B is a perspective view of the cooler of FIG. 31A in a partially collapsed configuration.

(51) FIG. 32C is a perspective view of the cooler of FIG. 31A in another partially collapsed configuration.

(52) FIG. 32D is a perspective view of the cooler of FIG. 31A in a fully collapsed configuration.

(53) FIG. 33 is a perspective view of a cooler in accordance with a tenth preferred embodiment of the invention.

(54) FIG. 34A is a perspective view of a cooler in accordance with an eleventh preferred embodiment of the invention.

(55) FIG. 34B is another perspective view of the cooler of FIG. 34A.

(56) FIG. 35A is a perspective view of a cooler in accordance with a twelfth preferred embodiment of the invention.

(57) FIG. 35B is another perspective view of the cooler of FIG. 35A.

(58) FIG. 36A is a perspective view of a cooler in accordance with a thirteenth preferred embodiment of the invention.

(59) FIG. 36B is another perspective view of the cooler of FIG. 36A.

(60) FIG. 37A is a perspective view of a cooler in accordance with a fourteenth preferred embodiment of the invention.

(61) FIG. 37B is a perspective view of the wall of the cooler of FIG. 37A.

(62) FIG. 38 is a cross-sectional view of a wall of a cooler in accordance with a fifteenth preferred embodiment of the invention.

(63) FIG. 39 is a cross-sectional view of a wall of a cooler in accordance with a sixteenth preferred embodiment of the invention.

(64) FIG. 40 is a perspective view of a cooler in accordance with a seventeenth preferred embodiment of the invention.

(65) FIG. 41 is a perspective view of a cooler in accordance with a nineteenth preferred embodiment of the invention.

(66) FIG. 42 is a front elevational view of a cooler in accordance with a twentieth preferred embodiment of the invention, wherein the cooler is in an expanded configuration.

(67) FIG. 43 is a side elevational view of the cooler of FIG. 42, wherein the cooler is in a collapsed configuration.

(68) FIG. 44 is a top plan view of the cooler of FIG. 43.

(69) FIG. 45 is a front elevational view of a cooler in accordance with a twenty-first preferred embodiment of the invention, wherein the cooler is in an expanded configuration.

(70) FIG. 46 is a perspective view of a cooler in accordance with a twenty-second preferred embodiment of the invention, wherein the cooler is in an expanded configuration.

DETAILED DESCRIPTION

(71) As a preliminary matter, it will readily be understood by one having ordinary skill in the relevant art (“Ordinary Artisan”) that the present invention has broad utility and application. As should be understood, any embodiment may incorporate only one or a plurality of the above-disclosed aspects of the invention and may further incorporate only one or a plurality of the above-disclosed features. Furthermore, any embodiment discussed and identified as being “preferred” is considered to be part of a best mode contemplated for carrying out the present invention. Other embodiments also may be discussed for additional illustrative purposes in providing a full and enabling disclosure of the present invention. As should be understood, any embodiment may incorporate only one or a plurality of the above-disclosed aspects of the invention and may further incorporate only one or a plurality of the above-disclosed features. Moreover, many embodiments, such as adaptations, variations, modifications, and equivalent arrangements, will be implicitly disclosed by the embodiments described herein and fall within the scope of the present invention.

(72) Accordingly, while the present invention is described herein in detail in relation to one or more embodiments, it is to be understood that this disclosure is illustrative and exemplary of the present invention, and is made merely for the purposes of providing a full and enabling disclosure of the present invention. The detailed disclosure herein of one or more embodiments is not intended, nor is to be construed, to limit the scope of patent protection afforded the present invention, which scope is to be defined by the claims and the equivalents thereof. It is not intended that the scope of patent protection afforded the present invention be defined by reading into any claim a limitation found herein that does not explicitly appear in the claim itself.

(73) Thus, for example, any sequence(s) and/or temporal order of steps of various processes or methods that are described herein are illustrative and not restrictive. Accordingly, it should be understood that, although steps of various processes or methods may be shown and described as being in a sequence or temporal order, the steps of any such processes or methods are not limited to being carried out in any particular sequence or order, absent an indication otherwise. Indeed, the steps in such processes or methods generally may be carried out in various different sequences and orders while still falling within the scope of the present invention. Accordingly, it is intended that the scope of patent protection afforded the present invention is to be defined by the appended claims rather than the description set forth herein.

(74) Additionally, it is important to note that each term used herein refers to that which the Ordinary Artisan would understand such term to mean based on the contextual use of such term herein. To the extent that the meaning of a term used herein—as understood by the Ordinary Artisan based on the contextual use of such term—differs in any way from any particular dictionary definition of such term, it is intended that the meaning of the term as understood by the Ordinary Artisan should prevail.

(75) Regarding applicability of 35 U.S.C. §112, ¶6, no claim element is intended to be read in accordance with this statutory provision unless the explicit phrase “means for” or “step for” is actually used in such claim element, whereupon this statutory provision is intended to apply in the interpretation of such claim element.

(76) Furthermore, it is important to note that, as used herein, “a” and “an” each generally denotes “at least one,” but does not exclude a plurality unless the contextual use dictates otherwise. Thus, reference to “a picnic basket having an apple” describes “a picnic basket having at least one apple” as well as “a picnic basket having apples.” In contrast, reference to “a picnic basket having a single apple” describes “a picnic basket having only one apple.”

(77) When used herein to join a list of items, “or” denotes “at least one of the items.” but does not exclude a plurality of items of the list. Thus, reference to “a picnic basket having cheese or crackers” describes “a picnic basket having cheese without crackers”. “a picnic basket having crackers without cheese”, and “a picnic basket having both cheese and crackers.” Finally, when used herein to join a list of items, “and” denotes “all of the items of the list.” Thus, reference to “a picnic basket having cheese and crackers” describes “a picnic basket having cheese, wherein the picnic basket further has crackers,” as well as describes “a picnic basket having crackers, wherein the picnic basket further has cheese.”

(78) Referring now to the drawings, one or more preferred embodiments of the present invention are next described. The following description of one or more preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, its implementations, or uses.

(79) A First Preferred Embodiment

(80) FIG. 1 is a perspective view of a preferred embodiment of a cooler 10 in accordance with one or more aspects of the present invention. The cooler 10 comprises a base 20, an upper rim 30, a lid 40, and a cooler wall 50 extending between the base 20 and the upper rim 30. The cooler further comprises a removable wheel assembly 60 attached to the base 20.

(81) FIG. 2A is a perspective view of the cooler 10 of FIG. 1 with the lid 40 in a closed orientation. The top surface 42 of the lid 40 includes a plurality of recesses including two wheel storage recesses 44 and an axle storage recess 46.

(82) FIG. 2B is a perspective view of the cooler 10 of FIG. 1 with the removable wheel assembly 60 removed from the base 20. The base 20 has a generally rectangular perimeter and includes a bottom surface 22 having a U-shaped channel 24 adapted to receive the removable wheel assembly 60 therein.

(83) FIG. 3 is a bottom view of the cooler 10 of FIG. 1 including the removable wheel assembly 60 disposed within the U-shaped channel 24. The removable wheel assembly comprises two coaxial wheels 62 and an axle 64. The removable wheels assembly 60 facilitates rolling motion of the cooler 10 from one location to another and is preferably constructed of a material capable of supporting the weight of the items stored in and on the cooler 10. It is preferred that the removable wheel assembly 60 be able to support at least about ninety pounds. It is more preferred that the removable wheel assembly 60 be able to support at least about one hundred and ten pounds.

(84) As further seen in FIG. 3, the bottom 22 of the base 20 includes a wheel fastening system, including a mount 12 affixed to the bottom 22 of the base 20, a clip 14 hingedly connected to the mount 12, and a locking clasp 16. The clip 14, when in an open position, allows for the insertion and removal of the removable wheel assembly 60 from the U-shaped channel 24. The clip 14, when in a closed position, holds the removable wheel assembly 60 within the U-shaped channel 24. The clip 14 is locked into the closed position with the locking clasp 16.

(85) FIG. 4 is a detailed bottom view of the cooler 10 of FIG. 1, illustrating the wheel fastening system locked in the closed position.

(86) FIG. 5 is a detailed side view of the cooler 10 of FIG. 1, illustrating the wheel fastening system locked in the closed position.

(87) FIG. 6 is a perspective view of the cooler 10 of FIG. 1, illustrating the wheel fastening system in the closed position with the locking clasp 16 disengaged from the clip 14.

(88) FIG. 7 is a perspective view of the cooler 10 of FIG. 1, illustrating the wheel fastening system in the closed position with the looking clap 16 disengaged from the clip 14.

(89) FIG. 8 is a perspective view of the cooler 10 of FIG. 1, illustrating the wheel fastening system in the open position, permitting the removal of the removable wheel assembly 60 from the U-shaped channel 24.

(90) FIG. 9 is a bottom view of the cooler 10 of FIG. 1, illustrating the wheel fastening system in the open position and the removable wheel assembly 60 disposed within the U-shaped channel 24.

(91) FIG. 10A is a front perspective view of the removable wheel assembly 60 disengaged from the cooler 10 of FIG. 1. FIG. 10B is a front view of the removable wheel assembly 60 of FIG. 10A. The removable wheel assembly 60 includes a pair of removable wheels 62, an axle 64, and a pair of locking pins 66. The wheels 62 include a central aperture 68 adapted to receive an outer portion of the axle 64 therethrough. The axle 64 includes a central portion of a first diameter disposed between the removable wheels 62 and two outer portions each having a second diameter that is small than the first diameter. The outer portions of the axle 64 are adapted to penetrate a central aperture 68 of a wheel 62. The central portion of the axle 64 further includes two recessed portions 365 adapted to align with the clip 14 when the removable wheel assembly 60 is disposed within the U-shaped channel 24. Each outer portions of the axle 64 further includes a small opening 70 adapted for receipt of a locking pin 66. The locking pin 66 prevents the wheel 62 from sliding off the axle 64.

(92) FIG. 11A is a front view of a removable wheel assembly 60 of the cooler 10 of FIG. 1. FIG. 11B is a side view of the removable wheel assembly 60 of FIG. 11A. In FIGS. 11A and 11B, the wheel 62 is shown engaged with the outer portion of the axle 64, the outer portion of the axle 64 penetrating through the central aperture 68 of the wheel 62. The wheel 62 is locked in place with a locking pin 66 in the small opening 70 of the axle 64. FIG. 11C is a front view of the removable wheel assembly 60 of FIG. 11A. FIG. 11D is a side view of the removable wheel assembly 60 of FIG. 11A. In FIGS. 11C and 11D, the locking pin 66 has been removed from the small opening 70, thus permitting the wheel 62 to be slidably disengaged from the outer portion of the axle 64. FIG. 11E is a front view of the removable wheel assembly 60 of FIG. 11A, illustrating the wheel 62 removed from the outer portion of the axle 64.

(93) FIG. 12 is a perspective view of the cooler 10 of FIG. 1 with the removable wheel assembly 60 removed from the bottom 22 of the base 20 of the cooler 10, disassembled, and stored within the plurality of recesses on the lid 40. As shown, the wheel storage recesses 44 on the lid 40 are adapted to receive and store the wheels 62, and the axle storage recess 46 on the lid 40 is adapted to receive and store the axle 64. The plurality of recesses on the lid 40 provide for convenient storage of the removable wheel assembly 60 while not in use. Although not shown in FIG. 12, it is contemplated that the locking pins 66 may be stored within either or both of the wheel storage recesses 44 or the axle storage recess 46.

(94) A Second Preferred Embodiment

(95) FIGS. 13-17 are perspective views of a preferred embodiment of a cooler 110 with a removable wheel assembly. The cooler 110 is generally identical in structure to the cooler 10 described hereinabove with respect to FIGS. 1-12, except with respect to any changes illustrated and those changes now described.

(96) In particular, rather than having a permanently affixed and non-retractable handle, the cooler 110 includes a telescoping handle 180 that is removable from the base 120 of the cooler 110. It will be appreciated that in one or more embodiments, a cooler in accordance with one or more aspect of the present invention may include a handle that is removable and telescoping, removable and non-telescoping or telescoping and non-removable.

(97) FIG. 13 illustrates the cooler 110 with the handle 180 attached to the base 120 and fully extended. FIG. 14 illustrates the cooler 110 with the handle 180 attached to the base 120 and partially retracted. FIG. 15 illustrates the cooler 110 with the handle 180 attached to the base 120 and totally retracted. FIG. 16 illustrates the cooler 110 with the handle 180 completely retracted and detached from the base 120.

(98) FIG. 17 is a perspective view of the cooler 110 of FIG. 13 with the removable, telescoping handle 180 removed from the base 120. Furthermore, FIG. 17 illustrates the lid 140 of the cooler 110 having a plurality of recesses for storage. The lid 140 includes a handle storage recess 148 adapted to receive and store the handle 180. The handle storage recess 148 provides for convenient storage of the handle 180 while the handle 180 is not in use.

(99) Although one or more telescoping handles have been illustrated, other telescoping handles that may telescope to varying degrees. i.e. that may collapse down to a smaller size, are also contemplated. Further, although one or more telescoping handles are Illustrated as having a general u-shape, in at least some implementations a telescoping handle includes only a single bar, that single bar being configured to telescope. Further, in at least some implementations, a handle may be configured to collapse into a main body of a cooler.

(100) In at least some implementations, a cooler includes a drain conduit, which may comprise a drain opening and a plug, or may comprise a spigot.

(101) A Third Preferred Embodiment

(102) FIG. 18 is a perspective view of a cooler 210 in an expanded configuration in accordance with a first of many preferred embodiments of the present invention. The cooler 210 comprises a base 20, an upper rim 30, a lid 40, and a cooler wall 50 extending between the base 20 and the upper rim 30.

(103) The base 20 includes two pairs of coaxial wheels 62, a bottom 22, and a top surface 26. The two pairs of coaxial wheels 62 are each connected to the base 20 with a conventional wheel axle. The wheels 62 facilitate rolling motion of the cooler 10 from one location to another and are preferably constructed of a material capable of supporting the weight of the items stored in and on the cooler 210. It is preferred that the wheels 62 be able to support at least about ninety pounds. It is more preferred that the wheels 62 be able to support at least about one hundred and ten pounds.

(104) The base 20 has a generally rectangular perimeter. Additionally, the base 20 is tapered such that the top surface 26 of the base 20 has a greater perimeter than the bottom 22 of the base 20. In a variation, however, the base is not tapered and, instead, includes generally orthogonal side and lateral surfaces.

(105) Preferably, a handle 180 is attached to the base 20 at a hinge such that it can be raised and lowered about the hinge. The handle 180 includes an elongate shaft portion 27 having a handle portion 29 affixed to its end, as can be seen in FIG. 18. The handle 180 may telescope and may be attachable to and readily unfastenable from the base 20. Moreover, the handle 180 may be storable under the base 20 in a similar manner as that disclosed in U.S. Patent Application Publication No. 2006/0237926, which is incorporated herein by reference.

(106) The cooler wall 50 is attached to the top surface 26 of the base 20. The cooler wall 50 includes a collapsible inner wall 52 and a collapsible outer wall 54. Preferably, one or both collapsible walls 52,54 are bonded, adhered, or cold-molded to the base 20. Each collapsible wall 52,54 comprises a flexible, elastomeric membrane 360 (see, e.g., FIG. 2). In at least one embodiment, one or more collapsible walls consists of a flexible, elastomeric membrane and nothing further that would impede the collapsibility and nesting of sections of the walls.

(107) A Fourth Preferred Embodiment

(108) FIG. 19 illustrates such a membrane 360 having a top portion 366 and a bottom portion 367. The membrane 360 has a cross-sectional perimeter taken horizontally in FIG. 2 that is generally rectangular with rounded corners along its entire extent from the top portion 366 to the bottom portion 367, but the membrane is tapered such that the top portion 366 has a greater perimeter than the perimeter of the bottom portion 367.

(109) FIG. 20 is a top plan view of the membrane 360, in which the rectangular perimeters at various elevations thereof can be clearly seen, the rectangular perimeters being concentrically arranged and, when fully collapsed, nested within each other and arranged generally within a common plane.

(110) The membrane 360 includes a first series of a plurality of hinge lines 362 and a second series of a plurality of hinge lines 362′, as can be seen in FIGS. 19 and 20. FIG. 21 is a cross-sectional view of the membrane 360 along line 4-4 of FIG. 20 and also shows the hinge lines 362,362′. The hinge lines 362,362′ are thinner, and thus more flexible and more deformable, than other portions of the membrane 360.

(111) Each hinge line 362 is defined between an upper hinge face 363 and a lower hinge face 64. The membrane 360 is configured to be bent at each hinge line 362 such that the associated upper hinge face 363 is bent downwards generally towards the associated lower hinge face 364. By bending a membrane 360 thusly, the membrane 60 can be transitioned to a collapsed yet stable state having a reduced height.

(112) The membrane 360 has both an outer surface 368 and an inner surface 369. The hinge faces 363, 364 associated with the hinge lines 362 are part of the outer surface 368. Each of the second hinge lines 362′ similarly has hinge faces 363′, 364′ associated therewith that are part of the inner surface 369. In this way, although each consecutive hinge line 362,362′ is defined in both the inner and outer surfaces 368,369, the surface 368,369 which comprises the associated hinge faces 363, 364 and hinge faces 363′, 364′ alternates.

(113) It will be understood that when membrane 360 is folded at a hinge line 362 associated with hinge faces 363, 364 of outer surface 368 (such as at 365 in FIG. 4), the membrane 360 is also folded at a complementary hinge line 362′ associated with hinge faces 363′, 364′ of the inner surface (such as at 365′ in FIG. 4).

(114) It also will be understood that membrane 360 has a fully collapsed configuration, wherein it is bent or folded at each hinge line 362,362′; a fully expanded configuration, wherein it is not bent or folded at any hinge line 362,362′; and a plurality of partially collapsed configurations, wherein it is collapsed at one or more pair of hinge lines 362,362′ but not at all of the pair of hinge lines 362,362′. Preferably, when the membrane 360 is in the fully collapsed configuration, it can be characterized as having a plurality of concentric portions all disposed generally in the same plane. Additionally, the membrane 360 is preferably configured to be stable not only in the fully collapsed and fully expanded configurations, but in one or more partially collapsed configurations as well.

(115) In addition to having hinge lines 362,362′, a membrane can also include one or more stiffening portions. An example of a membrane having such stiffening portions is disclosed in U.S. Patent Application Publication No. 2006/0096929, which publication is hereby incorporated herein by reference. In this publication the stiffening portions are characterized as “stiffening rings”, but it will be appreciated that these stiffening rings could be implemented as “stiffening portions” in one or more preferred embodiments in accordance with the present invention. Further, the membranes themselves as detailed therein could be utilized or implemented, either with or without changes or modifications, in one or more preferred embodiments in accordance with the present invention.

(116) Similarly, the membranes detailed in U.S. Patent Application Publication No. 2007/0251874, which publication is also hereby incorporated herein by reference, could be utilized or implemented, either with or without changes or modifications, in one or more preferred embodiments in accordance with the present invention.

(117) Preferably, a membrane is formed of silicone rubber, such as, for example, silicone rubber having a softness of about 25 on the Shore A scale.

(118) Returning to the cooler 210 of FIG. 18, the bottom portion of the membrane of the inner collapsible wall 52 and the bottom portion of the membrane of the outer collapsible wall 54 are each attached to the top surface 26 of the base 20. As can be seen in FIG. 22, which is a top plan view of the inner collapsible wall 52 and outer collapsible wall 54 of the cooler 210 of FIG. 18, wherein other components of the cooler 210 including the upper rim 30 have been omitted for clarity, an interior space 312 is defined by the inner collapsible wall 52 and an intermediate space 314 is defined between the inner collapsible wall 52 and the outer collapsible wall 54. Each of these spaces 312, 314 is bounded at a bottom by the top surface 26 of the base 20, which base 20 may or may not additionally define the bottom surface of such respective space 312, 314. Preferably, the interior space 312 of the cooler 210, in which food and beverages may be stored, has a volume of between approximately ten (10) quarts and seventy-five (75) quarts.

(119) The top portion 366 of the respective membrane of the inner collapsible wall 52 and the outer collapsible wall 54 (of which membrane 360 is representative) is attached to the upper rim 30. The upper rim 30 includes a rigid inner rim wall 32 and a rigid outer rim wall 34, as illustrated in FIG. 18. Each of the rim walls 32,34 has a generally rectangular perimeter with rounded corners and is preferably tapered such that a top portion of each rim wall 32,34 has a greater perimeter than a bottom portion of each rim wall 32,34. In variations, however, one or more of the rim walls may not be tapered and, instead, may include generally orthogonal side and lateral surfaces. The inner rim wall 32 is attached at its bottom portion to the inner collapsible wall 52, and the outer rim wall 34 is attached at its bottom portion to the outer collapsible wall 54.

(120) The upper rim 30 includes a plurality of connectors 33 that secure the inner rim wall 32 and the outer rim wall 34 to one another in a spaced apart relationship (i.e., the inner rim wall 32 and the outer rim wall 34 are preferably spaced apart), as can be seen in FIG. 18. The connectors 33 resemble spokes extending between the rim walls 32,34. Because the connectors 33 are spaced apart from one another, peripheral openings 39 are defined between the rim walls 32,34 and the connectors 33. The peripheral openings 39 each provides access to the intermediate space 314. An inner opening 38 defined by the inner rim wall 32 provides access to the interior storage space 312 of the cooler 210

(121) A lid 40 is attached to a first side of the upper rim 30, and more specifically to the outer rim wall 34, by hinges 80. The lid 40 can be lowered about the hinges 80 into a closed position in which it fully covers both the inner opening 38 and the peripheral openings 39, thereby sealing both the interior space 312 and the intermediate space 314, as illustrated in FIG. 23A. The lid 40 preferably includes a raised peripheral portion 48 sized and positioned to abut the inner and outer rims 32,34 in covering relation to the peripheral openings 39 when the lid 40 is in the closed position.

(122) The lid 40 includes a male fastening insert 78 configured to mate with a female fastening slot 79, located on a second side opposite the first side, such that the lid 40 is retained in a closed position.

(123) It will be understood that because the collapsible walls 52,54 each comprise a membrane, such as, for example, membrane 360 described hereinabove, each of the walls 52,54 can be transitioned between a fully expanded configuration, a fully collapsed configuration, and one or more partially collapsed, intermediate configurations. Further, because both of the collapsible walls 52,54 are attached to the upper rim 30, the collapsible walls 52,54 generally collapse and expand together. Thus, by transitioning the collapsible walls 52,54 from one configuration to another, the cooler 210 itself is transitioned between a fully expanded configuration, which can be seen in each FIGS. 18 and 23A; a plurality of partially collapsed configurations, two of which can be seen respectively in FIGS. 23B,23C; and a fully collapsed configuration, which can be seen in FIG. 23D. The collapsible walls 52,54 are configured such that the cooler 210 will be stable in all three expanded configurations (FIGS. 23A,23B,23C), and will also be stable in the completely collapsed configuration (FIG. 23D).

(124) It will be understood from the above description that the cooler 210 has a plurality of configurations that may be utilized. Various examples utilizing these configurations will now be described, although it will be appreciated that many other uses that are not described do exist and also lie within the scope of the present invention.

(125) A user wishing to keep items cooled or chilled utilizes the cooler 210 in either the fully expanded configuration, or one of the partially collapsed configurations. It will be understood that the interior space 312 will be larger, and thus the volume of items that can be stored will be greater, when the cooler is in the fully expanded configuration.

(126) To store items in the cooler 210, a user first disengages the male fastening insert 78 from the female fastening slot 79. The user then lifts the lid 40, thereby exposing the inner opening 38 and the peripheral openings 39. The user inserts ice through the peripheral openings 39 into the intermediate space 314 of the cooler wall 50, and places the items to be chilled or otherwise kept cool within the interior storage space 312 of the cooler 210. The ice in the intermediate space 314, which is separated by the collapsible inner wall 52, surrounds the interior space 312 and chills the interior space 312. The lid 40 can be lowered and the male fastening insert 78 engaged with the female fastening slot 79, thus retaining the lid in the closed position.

(127) The handle 180 can be grasped and the cooler 210 rolled from its current location to another location, where the cooler 210 can be opened to provide access to the chilled items. The handle 180 also is pivotably connected to the base by a hinge 31 (shown in dashed lines in FIGS. 18 and 23A), and the handle 180 rotates relative to the base 20 (as shown by the arrow in FIG. 23A), whereby the handle 180 itself may be retracted and rotated to under the base 20 when the cooler 210 is not being pulled.

(128) A variation of the cooler 210 is illustrated in FIG. 24, wherein cooler 210′ is identical in structure to cooler 210 and further includes bracket members 43. The bracket members 43 are preferably located at the corners of the cooler 210′ and extend between and interconnect the base 20 and the upper rim 30. Each bracket member 43 may be removably attached to each of the base 20 and rim 30, or alternatively, may be removably attached to one of the base 20 and rim 30 and pivotably attached to the other of the base 20 and rim 30, whereby the bracket members 43 may be retracted within a corresponding recess within the base 20 or rim 30 when not used. The bracket members 43 further may telescope between various locked extents so as to support the cooler 210′ in more than one of its stable configurations for use. Alternatively, different sets of bracket members may be removably attached to the base 20 and rim 30 for support of the cooler 210′ in its various expanded configurations for use.

(129) The bracket members 43 serve to convey tensional forces between the base 20 and the upper rim 30 if and when the cooler is lifted by the upper rim 30. The bracket members 43 are preferably included in the cooler 210 if the cooler is not otherwise constructed so as to be able to withstand the tensional forces in one or both of the collapsible walls 52,54 when the fully loaded cooler 210 is in the fully expanded configuration and is lifted from the upper rim 30, as opposed to lifted from the base 20.

(130) Further plurality of additional preferred embodiments are now described hereinbelow.

(131) A Fifth Preferred Embodiment

(132) A cooler base 220 and cooler wall of a cooler 150 in accordance with a second preferred embodiment is now described with reference to FIG. 25. The cooler is generally identical in structure to the cooler 210 described hereinabove with respect to FIGS. 18-24, except with respect to any changes illustrated and those changes now described regarding the cooler base 220 and cooler wall 150.

(133) In particular, rather than having collapsible inner and outer walls 52,54 both attached to a top surface 26 of a base 20, the cooler wall 150 has only a collapsible outer wall 154 that is attached to a top surface 126 of a base 220. Rather than being so attached, a collapsible inner wall 152 instead extends upward from a bottom wall 151, which is integrally formed with the collapsible inner wall 152. FIG. 25 is a cross-sectional view illustrating the cooler wall 150 and base 220. In FIG. 25, the base 220 has been simplified, and other components have been omitted, to improve clarity.

(134) It will be understood that, the intermediate space 114 includes not only the space defined between the collapsible inner and outer walls 152,154 but additionally includes the space defined between the bottom wall 153 and a top surface 126 of a base 220. Consequently, ice placed within the intermediate space 114 will cool the interior storage space not only from the sides thereof, but also from the bottom area of the intermediate space 114.

(135) It will further be understood that, because the collapsible walls 152,154 are not coupled or otherwise joined to one another at their respective bottom portions, the respective expanding and collapsing of the walls 152,154 are not necessarily dependent upon one another. More specifically, the cooler 150 is capable of transitioning to a configuration wherein the collapsible inner wall 152 is collapsed to an extent that is equal to or greater than the collapsed extent of the outer wall 154 (i.e., the inner wall 152 must be collapsed as much as the outer wall 154, but may be collapsed to a greater extent than the outer wall 154 since the two collapsible walls are not directly jointed together). As such, the inner collapsible wall 152 may be transitioned between different collapsed states independent of the outer collapsible wall 154 thus increasing or decreasing a volume of space defined between the bottom wall 151 and the top surface 126 of the base 220.

(136) A Sixth Preferred Embodiment

(137) A cooler 211 in accordance with a sixth preferred embodiment is now described with reference to FIG. 26. The cooler 211 is generally identical in structure to the cooler 210 described hereinabove with respect to FIGS. 18-24, except with respect to any changes illustrated and those changes now described.

(138) In particular, rather than having peripheral openings 39 defined between inner and outer rim walls 32,34 of rim 30, the cooler 211 includes an upper rim 230 having a closed top surface 235 without any peripheral opening 39 defined therein, as can be seen in FIG. 26. It will be understood that in the cooler 211, no access is provided to the intermediate space defined between the collapsible inner and outer walls 252,254.

(139) A Seventh Preferred Embodiment

(140) A cooler 310 in accordance with a seventh preferred embodiment is now described with reference to FIG. 10. The cooler 310 is generally identical in structure to the cooler 10 described hereinabove with respect to FIGS. 18-24, except with respect to any changes illustrated and those changes now described.

(141) In particular, the cooler 310 includes one or more drain conduits 372, as illustrated in FIG. 27. In this respect, a drain conduit 372 comprises a passageway (preferably cylindrical) providing fluid communication between an exterior of the cooler 310 and the intermediate space 314 that is defined between the inner and outer walls 352,354, whereby fluid (such as melted ice) may be drained from the intermediate space 314. In a variation, the drain conduit 372 provides fluid communication between the exterior of the cooler 310 and the interior space 312, whereby fluid may be dispensed or drained from the interior space 312.

(142) Furthermore, in another variation of this embodiment of the invention, a cooler includes both a first drain conduit in fluid communication with the intermediate space, and a second drain conduit in fluid communication with the interior space. Each drain conduit may be located on the exterior of the cooler either along a side or along a bottom of the cooler, and preferably includes a plug, valve, or spigot for selectively opening and closing the drain conduit and thereby control flow of liquid through the drain conduit.

(143) In at least one preferred variation of this embodiment of the invention, a cooler is a water cooler adapted to receive and retain water or other liquid therein for dispensing via a spigot comprising a drain conduit. Preferably, the water cooler has a generally circular perimeter and is configured to hold between approximately five (5) gallons and approximately ten (10) gallons of fluid.

(144) An Eight Preferred Embodiment

(145) A cooler 410 in accordance with an eight preferred embodiment is now described with reference to FIGS. 28A-28B. The cooler 410 is generally identical in structure to the cooler 10 described hereinabove with respect to FIGS. 18-24, except with respect to any changes illustrated and those changes now described.

(146) In particular, the cooler 410 includes at least one gripping handle 436 comprising portions of an upper rim 430 which extend outward on opposite lateral sides of the upper rim 430, beyond a lid 440, when the lid 440 is in a closed position. Each gripping handle 436 is defined by a generally rectangular or trapezoidal aperture 431 in the upper rim 430, as can be seen in FIG. 28A, which is a top view of the cooler 410. In use, a gripping handle 436 is grasped by a user and utilized to lift a respective end of the cooler 410 on which the gripping handle 436 is attached.

(147) The cooler 410 is shown having a single gripping handle 436 in FIG. 11B and having two gripping handles 436 in FIG. 28A. In still yet another embodiment of the invention (not shown per se), a gripping handle 436 is located on a side of the cooler 210 of FIGS. 18-24 that is opposite to the side on which the handle 180 is located. Of course, in other embodiments of the invention, a cooler may have no handle 436 or handle 180. In still yet other embodiments of the invention (not shown per se), one or more gripping handles 436 may be located in a similar manner on the base 20 rather than on the upper rim 30.

(148) A Ninth Preferred Embodiment

(149) Two coolers 510a,510b in accordance with a ninth preferred embodiment are now described with reference to FIGS. 29A-29B. Each of the coolers 510a,510b is generally similar (but not identical) in structure to the cooler 210 described hereinabove with respect to FIGS. 18-24, except with respect to any changes illustrated and those changes now described.

(150) In particular, rather than including two pairs of coaxial wheels 62, a base 520a,520b of the respective coolers 510a,510b includes only a single pair of coaxial wheels 522a,522b, as can be seen in FIGS. 29A and 29B. Preferably, the wheels 522a,522b are larger than in embodiments utilizing two pairs of coaxial wheels, and more specifically are preferably large enough to easily roll across terrain such as sand on a beach, or grass in a park, as can be seen in FIG. 29B. The wheels 522b preferably are about ten inches in diameter with a tread width of about three inches.

(151) A Tenth Preferred Embodiment

(152) A cooler 610 in accordance with a tenth preferred embodiment is now described with reference to FIG. 30. The cooler 610 is generally similar in structure to the cooler 10 described hereinabove with respect to FIGS. 18-24, except with respect to any changes illustrated and those changes now described. In particular, the cooler 610 includes one or more cup holders 649 defined in a lid 640 of the cooler 610, as illustrated in FIG. 30.

(153) An Eleventh Preferred Embodiment

(154) A cooler 710 in accordance with an eleventh preferred embodiment is now described with reference to FIGS. 31 and 31A-31D. The cooler 710 is generally similar (but not identical) in structure to the cooler 10 described hereinabove with respect to FIGS. 18-24, except with respect to any changes illustrated and those changes now described.

(155) In particular, the cooler 210 generally tapers from its top to its bottom, in that the membrane of each collapsible wall 52,54 is tapered such that its top portion has a greater perimeter than its bottom portion; the base 20 is tapered such that its top surface 26 has a greater perimeter than its bottom 22; and the upper rim 30 is tapered such that a top portion of each rim wall 32,34 has a greater perimeter than a bottom portion of each rim wall 32,34. It will thus be appreciated that the upper rim 30 has a substantially greater perimeter than the base 20.

(156) In contrast, the cooler 710 tapers from its bottom to its top. For example, in FIG. 31A, the cooler 710 is illustrated in a fully expanded configuration, in FIG. 31B, the cooler 710 is illustrated in a partially collapsed (or partially expanded) configuration; in FIG. 31C, the cooler 710 is illustrated in another partially collapsed configuration; and in FIG. 31D, the cooler 710 is illustrated in a fully collapsed condition. As will be appreciated from these figures, a membrane of each of the collapsible walls of the cooler 710 is tapered such that its bottom portion has a greater perimeter than its top portion; a base is tapered such that its bottom has a greater perimeter than its top surface; and an upper rim is tapered such that a bottom portion of each rim wall has a greater perimeter than a top portion of each rim wall. It will also be appreciated that in the cooler 710, the base 720 has a substantially greater perimeter than the upper rim.

(157) A Twelfth Preferred Embodiment

(158) A cooler 810 in accordance with a twelfth preferred embodiment is now described with reference to FIGS. 32 and 32A-32D. The cooler 810 is generally similar (but not identical) in structure to the cooler 210 described hereinabove with respect to FIGS. 18-24, except with respect to any changes illustrated and those changes now described.

(159) In particular, rather than tapering simply from its top to its bottom or from its bottom to its top, the cooler 810 instead tapers from both its top and its bottom towards a middle of the cooler 810, as can be seen in FIG. 32A, in which the cooler 810 is illustrated in a fully expanded configuration; in FIG. 32B, in which the cooler 810 is illustrated in a partially collapsed configuration; in FIG. 32C, in which the cooler 810 is illustrated in another partially collapsed configuration; and in FIG. 32D, in which the cooler 810 is illustrated in a fully collapsed condition. In the cooler 810, a base 820 is tapered such that its bottom 824 has a greater perimeter than its top surface 826; an upper rim 830 is tapered such that a top portion of each rim wall 832,834 has a greater perimeter than a bottom portion of each rim wall 832,834; and, a membrane of each collapsible wall 852,854 is tapered such that its bottom portion 872 and its top portion 874 each have a greater perimeter than a middle portion 876 thereof. It will be appreciated that in the cooler 810, the base 820 has a perimeter generally equal to that of the upper rim 830, and that the base 820 and the upper rim 830 abut one another when the cooler 810 is in the fully collapsed configuration (FIG. 320).

(160) A Thirteenth Preferred Embodiment

(161) A cooler 910 in accordance with an thirteenth preferred embodiment is now described with reference to FIG. 33. The cooler 910 is generally similar (but not identical) in structure to the cooler 210 described hereinabove with respect to FIGS. 18-24, except with respect to any changes illustrated and those changes now described.

(162) In particular, rather than having a generally rectangular perimeter with rounded corners, the cooler 910 has a base 920, an upper rim 930, inner collapsible wall (not shown), and outer collapsible wall 954. The cooler 910 is shown in an expanded configuration, with the arrows indicating the direction of collapsibility. The inner and outer collapsible walls each have a generally elliptical perimeter and, in particular, a generally circular perimeter, as illustrated in FIG. 33. Additionally the base 920 of cooler 910 includes four rotating wheels 923 attached thereto such that each wheel is independently rotatable in any direction, similar to those commonly disposed on the bottom of a dolly, such as, for example, the dolly disclosed in U.S. Pat. No. 3,608,921, which patent is hereby incorporated herein by reference. In a variation, the base 920 includes only three such rotating wheels 923, which preferably are disposed in a triangular arrangement rather than a rectangular arrangement.

(163) The cooler 910 further may include one or more drain conduits in fluid communication with the intermediate space between the inner and outer walls and/or in fluid communication with the interior storage space of the cooler 910.

(164) In another variation of the cooler 910, the wall of the cooler includes only a single membrane, and does not include both inner and outer walls, and further includes a drain conduit that is located proximate a bottom of the cooler and that is disposed in fluid communication with the interior space of the cooler. Such a cooler could be utilized, for example, in dispensing Gatorade®, or other beverage to athletes at a sports event, wherein the beverage is actually mixed within the interior space of the cooler.

(165) A Fourteenth Preferred Embodiment

(166) A cooler 1110 in accordance with a fourteenth preferred embodiment is now described with reference to FIGS. 34A-34B. The cooler 1110 is generally similar in structure to the cooler described hereinabove with respect to FIGS. 18-24, except with respect to any changes illustrated and those changes now described.

(167) In particular, rather than having a handle 180 attached to a base 20, the cooler 1110 has a handle 1128 attached to an upper rim thereof at opposite sides of the upper rim 1130, as illustrated in FIG. 17A. Preferably, the handle 1128 is attached to the upper rim and is configured for pivoting movement relative thereto, and may be attached for pivoting about an axis via a hinge mechanism 1132. In such an arrangement, the handle 1128 may be configured to swivel over a top of the cooler 1110 from one side to another. The handle 1128 preferably includes a grip portion 1129. Additionally, the handle 1128 is preferably configured to lock at one or both sides of the cooler 1110. It will be understood that if so locked, the handle 1128 will be disposed in substantially the same plane as the inner collapsible wall (not show) and the outer collapsible wall 1154 of the cooler 1110, when the cooler 1110 is in a fully collapsed configuration, as illustrated in FIG. 34B. The cooler 1110 is shown in an expanded configuration in FIG. 34A, with the arrows indicating the directions of collapsibility and expansion; and the cooler 1110 is shown in a fully collapsed configuration in FIG. 34B.

(168) Alternatively, the handle is fixedly attached to the upper rim 1130 such that the handle is not movable relative to the upper rim 1130 of the cooler 1110.

(169) A Fifteenth Preferred Embodiment

(170) A cooler 1210 in accordance with a fifteenth preferred embodiment is now described with reference to FIGS. 35A-35B. The cooler 1210 is generally similar in structure to the cooler described hereinabove with respect to FIGS. 18-24, except with respect to any changes illustrated and those changes now described.

(171) In particular, the cooler 1210 is configured such that its upper rim 1230 engages with and locks into its base 1220 when the cooler 1210 is in a collapsed configuration. Preferably, the upper rim 1230 includes a snap fastener 1237 adapted to mate with a snap fastener 1225 of the base 1220, as can be seen in FIG. 35A. FIG. 35B illustrates the cooler 1210 secured in a fully collapsed configuration by the snap fasteners 1225,1237.

(172) A Sixteenth Preferred Embodiment

(173) A cooler 1310 in accordance with a sixteenth preferred embodiment is now described with reference to FIGS. 36A-36B. The cooler 1310 is generally similar in structure to the cooler 210 described hereinabove with respect to FIGS. 18-24, except with respect to any changes illustrated and those changes now described.

(174) In particular, the cooler 1310 is configured such that its outer collapsible wall 1354 is generally unexposed and thereby protected when the cooler 1310 is in a fully collapsed configuration, as shown in FIG. 36B. More specifically, a portion of the base 1320 and a portion of the upper rim 1330 each extend at least partly over the outer collapsible wall 1354, which is received with a respective space or recess thereof. These portions of the base 1320 and upper rim 1330 are shaped and dimensioned to mate with one another when the cooler is transitioned to a collapsed configuration. In contrast to the fully collapsed configuration of FIG. 36B, the cooler 1310 is depicted in an expanded configuration in FIG. 36A.

(175) A Seventeenth Preferred Embodiment

(176) A cooler 1410 in accordance with a seventeenth preferred embodiment is now described with reference to FIGS. 37A-37B. The cooler 1410 is generally similar in structure to the cooler 210 described hereinabove with respect to FIGS. 18-24, except with respect to any changes illustrated and those changes now described.

(177) In particular, the cooler 1410, rather than having a generally rectangular perimeter, has a perimeter with a generally arcuate portion and a generally linear portion, as Illustrated in FIG. 37A. In this respect, the upper rim 1430 of the cooler generally resembles the outer periphery of a toilet seat. Additionally, rather than having a lid that is permanently attached to or otherwise fastened to an upper rim 1430, such as at hinges, the cooler 1410 includes a lid 1440 removably secured to an upper rim such that it can be completely removed and detached from the upper rim. This can be accomplished in various ways that are well known to the Ordinary Artisan. The collapsible cooler wall 1450 of the cooler 1410 in FIG. 37A is further shown in FIG. 37B.

(178) An Eighteenth Preferred Embodiment

(179) A cooler in accordance with a eighteenth preferred embodiment is now described with reference to FIG. 38, wherein a cooler wall 1550 is shown. The cooler is generally identical in structure to the cooler 210 described hereinabove with respect to FIGS. 18-24, except with respect to any changes illustrated and those changes now described regarding the cooler wall 1550.

(180) In particular, rather than having collapsible inner and outer walls 52,54 both attached to a top surface 26 of a base 20, the cooler wall 1550 has a collapsible inner wall 1552 extending upward from an inner bottom wall 1551, which is integrally formed with the collapsible inner wall 1552; and a collapsible outer wall 1554 extending upward from an outer bottom wall 1553, which is integrally formed with the collapsible outer wall 1554. Both walls 1552,1554 are attached to the upper rim of the cooler in accordance with the eighteenth preferred embodiment.

(181) It will be understood that in the cooler wall 1550, the intermediate space 1514 defined between the inner and outer walls 1552,1554 includes not only the space defined between the collapsible inner and outer walls 1552,1554 but additionally includes the space defined between the inner bottom wall 1551 and the outer bottom wall 1553.

(182) It will further be appreciated that, because the collapsible walls 1552,1554 are not coupled to one another in any fashion at bottom portions of their respective membranes, the collapsible walls 1552,1554 can be independently collapsed or expanded. More specifically, the cooler including the cooler wall 1550 is capable of transitioning to a configuration wherein the collapsible inner wall 1552 is collapsed to the same or to a greater extent than the collapsible outer wall 1554 (e.g., to a first expanded state with the outer wall in a second expanded state), thus increasing the volume of space defined between the inner bottom wall 1551 and the outer bottom wall 1553.

(183) A Nineteenth Preferred Embodiment

(184) A cooler in accordance with a nineteenth preferred embodiment is now described with reference to FIG. 39, wherein a cooler wall 1650 is shown. In particular, the cooler wall 1650 is similar to the cooler wall 1550, but rather than having inner and outer bottom walls 1551,1553 like the cooler wall 1550, the cooler wall 1650 has a single bottom wall 1653 from which collapsible inner and outer walls 1652,1654 extend upwards.

(185) A Twentieth Preferred Embodiment

(186) In a twentieth preferred embodiment, a cooler 1710 illustrated in FIG. 40 generally is comprised of the cooler wall 1650; as will be appreciated, the cooler 1710 thus does not include an upper rim or base. The cooler 1710 includes an inner collapsible wall 1752 and outer collapsible wall 1754 with a single bottom wall 1753. Ice is shown disposed within the intermediate space between the inner collapsible wall 1752 and outer collapsible wall 1754, with a top of the outer collapsible wall 1754 extending above a top of the inner collapsible wall 1752. Additionally, in a variation of cooler 1710, connectors or spokes are provide that extend between and join together the inner and outer collapsible walls of the cooler. Preferably, the connectors are rigid or semirigid and can be integrally formed (such as in a co-molding manufacturing process) with the inner collapsible wall and/or the outer collapsible.

(187) A Twenty-First Preferred Embodiment

(188) In a twenty-first preferred embodiment, rather than including collapsible inner and outer walls, a cooler includes only a single collapsible wall. Such a cooler preferably includes a base and an upper rim, but in alternative embodiments lacks one or both of these features.

(189) A Twenty-Second Preferred Embodiment

(190) A cooler 1908 in accordance with a twenty-second preferred embodiment is now described with reference to FIG. 41. The cooler 1908 is generally identical in structure to the cooler 210 described hereinabove with respect to FIGS. 18-24, except with respect to any changes illustrated and those changes now described. In particular, rather than having collapsible inner and outer walls 52,54 each comprising a single membrane as disclosed, for example, with regard to the cooler 210 described above, the cooler 1908 includes collapsible inner wall (not shown) and outer wall 1954, each of which comprises a plurality of membranes. Preferably, each respective group of membranes are joined together by reinforcing, rigid portions 1982 forming one of the collapsible walls of the cooler 1908. Each membrane of an intermediate section is preferably attached to the immediately adjoining portions 1982.

(191) A Twenty-Third Preferred Embodiment

(192) FIG. 42 is a front elevational view of a cooler 2000 in accordance with a Twenty-Third preferred embodiment of the invention, wherein the cooler 2000 is shown in an expanded configuration. FIG. 43 is a side elevational view of the cooler 2000, wherein the cooler 2000 is shown in a collapsed configuration, and FIG. 44 is a top plan view of the cooler 2000. The cooler 2000 is generally similar (but not identical) in structure to the cooler 1110 described hereinabove with respect to FIGS. 34A-34B, except with respect to any changes illustrated and those changes now described. In particular, rather than having a handle 1128 attached to an upper rim 1130 at opposite sides thereof, as illustrated in FIG. 34A, the handle 2028 of cooler 2000 is attached to the base 2020 and is configured for pivoting movement relative thereto, and may be attached for pivoting about a pivot axis via a hinge mechanism 2022. In such an arrangement, the handle 2028 may be configured to swivel over a top of the cooler 2000 from one side to another. The handle 2028 preferably includes a grip portion 2029. When collapsed, as shown in FIG. 43, the handle 2028 is disposed in substantially the same plane as the inner collapsible wall (not show) and the outer collapsible wall 2054 of the cooler 2000.

(193) A Twenty-Fourth Preferred Embodiment

(194) FIG. 45 is a front elevational view of a cooler 2100 in accordance with a twenty-fourth preferred embodiment of the invention, wherein the cooler 2100 is in an expanded configuration. Like cooler 810, the inner and outer walls of the cooler 2100 each tapers from both the rim 2130 of the cooler 2100 and the base 2120 of the cooler 2100 towards a middle of the cooler 2100. Furthermore, like cooler 1908, each of the inner and outer walls of the cooler 2100 includes a plurality of membranes. In this respect, each of the inner and outer walls of the cooler 2100 includes upper and lower membranes separated by intermediate rigid portion 2199. In particular, the upper membrane is attached to and extends between the upper rim 2130 and the intermediate rigid portion 2199, and the lower member is attached to and extends between the base 2120 and the intermediate rigid portion 2199. Accordingly, the upper member is expandable and collapsible independent of the expansion or contraction of the lower member, and vice-versa. Moreover, handle 2128 is attached to the intermediate rigid portion 2199 and is configured for pivoting movement relative thereto, and may be attached for pivoting about an axis via a hinge mechanism 2122. The handle 2128 preferably is configured to swivel over a top of the cooler 2100 from one side to another, as indicated in FIG. 45.

(195) A Twenty-Fifth Preferred Embodiment

(196) FIG. 46 is a perspective view of a cooler 2200 in accordance with a twenty-fifth preferred embodiment of the invention, wherein the cooler 2200 is in an expanded configuration. The cooler 2200 preferably includes a drinking spout 2297. In one implementation, the collapsible walls are about eight (8) inches in length when fully expanded and the cooler 2200 is used as a personal cooler for containing a beverage. As illustrated, the cooler 2200 includes a pivoting handle and a base with feet.

(197) Transportable Cooler Apparatus

(198) In variations of some of the foregoing embodiments in which the cooler includes a wheeled platform (such as wheeled platform 1990 of cooler 1908), the portion of the cooler defining the interior storage space (including the lid and collapsible wall) may include a base and may be removably coupled to the wheeled platform and can be coupled and uncoupled therefrom. Such wheeled platform is preferably durable and rigid and is formed in one or more molding processes. Moreover, as used herein, “molding” may include injection molding, rotational molding, and/or blow molding. Furthermore, the wheeled platform may be integrally formed as a single piece or may be separately formed as multiple pieces and, thereafter, connected or joined together.

(199) The cooler portion may be coupled to the wheeled platform by coupling components. When the cooler is coupled to the wheeled platform, the coupling components preferably are disposed in interlocking engagement with one another, whereby the cooler is securely coupled to the wheeled platform for safe transportation on the wheeled platform, i.e., the cooler is protected from falling off of the wheeled platform during transport over rough terrain such as grass or a sand dune. The coupling components may comprise snap components and/or hook and loop fastening components.

(200) Portable coolers that may be removably coupled to a wheeled platform are further described in, for example, Vanderberg U.S. Pat. No. 7,387,305, which is incorporated herein by reference.

(201) Other Embodiments of the Invention

(202) Additional features that may be incorporated into coolers of the present invention and that fall within the scope of the present invention are disclosed in the incorporated Vanderberg references. Such incorporated feature may be utilized together in combination with the aspects and/or one or more features disclosed herein.

(203) Based on the foregoing description, it will be readily understood by those persons skilled in the art that the present invention is susceptible of broad utility and application. Many embodiments and adaptations of the present invention other than those specifically described herein, as well as many variations, modifications, and equivalent arrangements, will be apparent from or reasonably suggested by the present invention and the foregoing descriptions thereof, without departing from the substance or scope of the present invention. Accordingly, while the present invention has been described herein in detail in relation to one or more preferred embodiments, it is to be understood that this disclosure is only illustrative and exemplary of the present invention and is made merely for the purpose of providing a full and enabling disclosure of the invention. The foregoing disclosure is not intended to be construed to limit the present invention or otherwise exclude any such other embodiments, adaptations, variations, modifications or equivalent arrangements, the present invention being limited only by the claims appended hereto and the equivalents thereof.