US20050117817A1 - Foldable insulated bag - Google Patents
Foldable insulated bag Download PDFInfo
- Publication number
- US20050117817A1 US20050117817A1 US10/958,660 US95866004A US2005117817A1 US 20050117817 A1 US20050117817 A1 US 20050117817A1 US 95866004 A US95866004 A US 95866004A US 2005117817 A1 US2005117817 A1 US 2005117817A1
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- United States
- Prior art keywords
- bag
- wall structure
- insulated
- orientation
- length
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
- A45C7/00—Collapsible or extensible purses, luggage, bags or the like
- A45C7/0059—Flexible luggage; Hand bags
- A45C7/0077—Flexible luggage; Hand bags collapsible to a minimal configuration, e.g. for storage purposes
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- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
- A45C11/00—Receptacles for purposes not provided for in groups A45C1/00-A45C9/00
- A45C11/20—Lunch or picnic boxes or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R5/00—Compartments within vehicle body primarily intended or sufficiently spacious for trunks, suit-cases, or the like
- B60R5/04—Compartments within vehicle body primarily intended or sufficiently spacious for trunks, suit-cases, or the like arranged at rear of vehicle
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- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
- A45C13/00—Details; Accessories
- A45C13/30—Straps; Bands
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- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
- A45C3/00—Flexible luggage; Handbags
- A45C3/04—Shopping bags; Shopping nets
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
Abstract
A soft sided insulated cooler bag has a base and side panels. The upper edge of the bag has a length that is as great as half the periphery of the bottom panel. The bag can be collapsed to a flat position and then panel folded to a storage position. Retainers are provided to keep the bag in the storage position. The bag has carrying members suitable to allow carriage in a first orientation or a second orientation.
Description
- This application is a continuation-in-part application of U.S. patent application Ser. No. 10/340,851, filed Jan. 13, 2003, which application is hereby incorporated herein by reference.
- This invention relates to the field of foldable insulated containers.
- Collapsible insulated containers have been known for some years. They are typically used as containers for carrying cold drinks, and other cool refreshments, but can also be used to keep foods or beverages warm or hot.
- Certain sizes and shapes of coolers are better for some purposes than others. Some collapsible coolers can be folded to a collapsed position, but the folding process may tend to require relatively strong hands, since the insulated panels may be of fair thickness and may have a resilience that tends to resist folding. These containers may tend to unfold easily, but tend to be rather more difficult to fold back into the collapsed or storage position.
- An example is provided in U.S. Des. Pat. No. 382,771. As shown therein, the front and rear walls remain generally parallel planar orientation while the bottom panel can folded up in half In doing so, the side panels are folded inward to collpase the cooler. This kind of cooler is secured in the folded position (a) by a hook-and-eye fabric strip securement between the overfolded lip of the lid portion of the cooler and the front face of the cooler and (b) by side fastening straps that retain the bottom portions of the front panel relative to the back panel, typically by wrapping at least partially around the back panel and being secured thereto with hook-and-eye strips. Coolers of this nature tend to be generally cubic in shape with rectangular sides forming, typically, a six sided box-shaped structure when unfolded. A cooler of this type may also tend to require more manufacturing steps than a more bag-like cooler, and may therefore be more costly and time consuming to produce.
- Rolling up a collapsible cooler, in the manner in which a sleeping bag is sometimes rolled up, may tend not to be particularly satisfactory in all circumstances. Users may tend to roll up the insulated material too tightly, either damaging the material, or tending to give it a permanent set. This tight rolling approach may also tend to favour persons with relatively strong hands.
- It may be that a different kind of cooler is desired that may be somewhat more convenient for rapid use, that may be more quickly and easily folded, or that may provide greater ease of manufacture that may tend to pack efficiently for shipment, or that may present a relatively easily displayed product.
- It may also be that it would be preferable to have a cooler that folds in a continuous direction, or that folds back and forth, on a folding panel basis rather than in a continuous tight roll like a sleeping bag.
- It may also be that it would be preferable to have a foldable cooler that may be carried in a first orientation to suit one type of cargo and in a second orientation to suit a different type of cargo.
- There is a need for a foldable insulated container, or bag, that may be more easily constructed than the more box-shaped type of cubic collapsible insulated container, that may tend to require fewer, or simpler, manufacturing steps, or that may tend to provide an easily displayed and relatively convenient insulated container for everyday use.
- In an aspect of the invention, there is a foldable insulated bag comprising an insulated wall structure defining an insulated space therewithin. The wall structure has a closure member operable to govern access to the insulated space. The wall structure includes a carrying member attached thereto, wherein the carrying member is moveable between a first position for carrying the bag in a first orientation and a second position for carrying the bag in a second orientation. A securement member is attached to the wall structure for engaging the carrying member in the second position. The wall structure, when empty, is movable to a first, flattened position. The wall structure is foldable from the first flattened position to a folded, storage position. The wall structure is securable in the folded, storage position.
- In an additional feature of that aspect of the invention, the bag has a bottom region and a top region. The carrying member is mounted to the bag near the top region and the securement member is mounted to the bag near the bottom region. In another additional feature of that aspect of the invention, the securement member is a strap having a proximal end and a distal end, with a first releasable fastening member mounted at the proximal end and a second releasable fastening member mounted at the distal end. The first releasable fastening member is arranged for mating engagement with said second releasable fastening member. In yet another additional feature the first and second releasable fastening members are mating hook-and-eye-fabric strip portions.
- In an additional feature of the of the invention, the bag has a length, a breadth and a through thickness. The through thickness is small relative to both the length and the breadth. When the bag is carried in the first orientation the length and breadth are oriented in an up-and-down orientation and when the bag is carried in the second orientation, the length and breadth are oriented in a flat-wise orientation.
- In another aspect of the invention, there is a foldable insulated bag comprising an insulated wall structure defining an insulated space therewithin. The wall structure has a closure member operable to govern access to the insulated space. The wall structure has a length, a breadth and through thickness wherein the through thickness is smaller than either the length or the breadth. The wall structure has a face defined by the length and the breadth and the face has an upper margin and a lower margin. A carrying member is secured nearer to the upper margin than to the lower margin for carrying the face in an up-and-down orientation. A securement member is mounted closer to the lower margin than the upper margin and is operable to engage and secure the carrying member for carriage of the face in a flat-wise orientation. The wall structure, when empty, is movable to a first, flattened position. The wall structure is foldable from the first flattened position to a folded storage position and is securable in the folded storage position.
- These and other aspects of the invention may be more readily understood with the aid of the illustrative Figures and detailed description included hereinbelow.
- In the illustrative Figures of an example, or examples, embodying the various aspects of the invention, provided by way of illustration, but not of limitation of the present invention:
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FIG. 1 shows a perspective view of an example of a foldable insulated bag of an embodiment of the present invention as carried by a user; -
FIG. 2 shows a perspective view of the bag ofFIG. 1 as installed in the trunk of an automobile; -
FIG. 3 a shows a perspective view of the bag ofFIG. 1 as folded; -
FIG. 3 b shows a front view of the bag ofFIG. 3 a in a fully folded condition; -
FIG. 3 c shows a rear view of the bag ofFIG. 3 a in the fully folded condition; -
FIG. 3 d shows an end view of the bag ofFIG. 3 a in the fully folded condition; -
FIG. 3 e shows the opposing end view of the bag ofFIG. 3 a in the fully folded condition as compared toFIG. 3 d; -
FIG. 3 f shows a top view of the bag ofFIG. 3 a in the fully folded condition; -
FIG. 3 g shows a bottom view of the bag ofFIG. 3 a in the fully folded condition; -
FIG. 3 h shows the bag ofFIG. 3 c with an alternate hang loop orientation; -
FIG. 4 a shows a perspective view of the unfolded bag ofFIG. 1 . -
FIG. 4 b shows a front view of the bag ofFIG. 4 a in a fully unfolded condition; -
FIG. 4 c shows a rear view of the bag ofFIG. 4 a in the fully unfolded condition; -
FIG. 4 d shows an end view of the bag ofFIG. 4 a in the fully unfolded condition; -
FIG. 4 e shows the opposing end view of the bag ofFIG. 4 a in the fully unfolded condition as compared toFIG. 4 e; -
FIG. 4 f shows a top view of the bag ofFIG. 4 a in the fully unfolded condition; -
FIG. 4 g shows a bottom view of the bag ofFIG. 4 a in the fully unfolded condition; -
FIG. 5 shows a cross sectional view of the bag ofFIG. 1 , taken abeam of the handles (with the handles not shown); -
FIG. 6 a shows a front view of the bag ofFIG. 1 in a partially folded condition; -
FIG. 6 b shows a rear view of the bag ofFIG. 6 a; -
FIG. 6 c shows an end view of the bag ofFIG. 6 a; -
FIG. 6 d shows the opposing end view of the bag ofFIG. 6 a as compared toFIG. 6 c; -
FIG. 7 a shows a perspective view of the bag ofFIG. 1 in an open condition with a liner thereof in an inverted position to facilitate washing thereof; -
FIG. 7 b shows a perspective view of the bag ofFIG. 1 in an open condition; -
FIG. 8 shows a developed view of panels of the bag ofFIG. 1 prior to assembly; -
FIG. 9 a shows a developed view of a bottom panel for an alternate embodiment of the foldable insulated bag ofFIG. 1 ; -
FIG. 9 b shows a developed view of a side panel and a single side panel for an alternate embodiment of the foldable insulated bag ofFIG. 1 ; -
FIG. 10 a shows an isometric view of a single fold, alternate insulated bag to that ofFIG. 1 ; -
FIG. 10 b shows a front view of the insulated bag ofFIG. 10 a in a folded condition; -
FIG. 10 c shows a rear view of the insulated bag ofFIG. 10 a in a folded condition; -
FIG. 10 d shows an end view of the insulated bag ofFIG. 10 a; -
FIG. 10 e shows an opposing end view of the insulated bag ofFIG. 10 a as compared toFIG. 10 d; -
FIG. 10 f shows a top view of the insulated bag ofFIG. 10 a; -
FIG. 10 g shows a bottom view of the insulated bag ofFIG. 10 a; -
FIG. 11 a shows a partially unfolded front view of a triple fold, alternate insulated bag to that ofFIG. 1 ; -
FIG. 11 b shows a front view of the insulated bag ofFIG. 11 a in a folded condition; -
FIG. 11C shows a rear view of the insulated bag ofFIG. 11 a in a folded condition; -
FIG. 11 d shows an end view of the insulated bag ofFIG. 11 a; -
FIG. 11 e shows an opposing end view of the insulated bag ofFIG. 11 a as compared toFIG. 11 d; -
FIG. 11 f shows a top view of the insulated bag ofFIG. 11 a; -
FIG. 11 g shows a bottom view of the insulated bag ofFIG. 11 a. -
FIG. 12 a shows a perspective view of an alternative insulated bag to that ofFIG. 1 in the unfolded condition; and -
FIG. 12 b shows a right side view of a detail of the bottom portion of the bag ofFIG. 12 a looking in the direction of arrow “12 b”, with hand strap removed. - The description that follows, and the embodiments described therein, are provided by way of illustration of an example, or examples, of particular embodiments of the principles of the present invention. These examples are provided for the purposes of explanation, and not of limitation, of those principles and of the invention. In the description, like parts are marked throughout the specification and the drawings with the same respective reference numerals. The drawings are not necessarily to scale and in some instances proportions may have been exaggerated in order more clearly to depict certain features of the invention.
- For the purposes of this description, the largest panels of the bags herein described are arbitrarily designated as the front and rear sides, faces, or portions of the bag. Similarly, the closure member, or opening of the bag is arbitrarily designated as being at the top, and the base panel is designated as being at the bottom. It should also be understood that, within the normal range of temperatures to which human food and human touch is accustomed, although the term cooler, or cooler container, or cooler bag, may be used, such insulated structures may generally also be used to keep food, beverages, or other objects either warm or hot as well as cool, cold, or frozen.
- As seen in the Figures, an example of a portable, collapsible soft sided, insulated wall structure is identified as a foldable
cooler tote bag 20. This structure can be referred to as an insulated bag, an insulated container, a cooler, or the like. As shown inFIGS. 1-4 , the basic structure ofbag 20 includes a first side panel, or wall, or sidewall, arbitrarily designatedfront panel 22, a second side panel, or wall, or sidewall, designated arbitrarily asrear panel 24, and a third panel or wall identified as a bottom, orbase panel 26. As described more fully below, these panels are joined together to form a pouch, or bag, having an enclosedinternal space 25 surrounded by insulated walls (seeFIG. 5 ). The enclosed volume ofinternal space 25 varies with the condition of the bag. That is, while the bag is in a folded (that is, collapsed) condition or position, or is lying flat, the internal volume is negligibly small, if not zero. However, whenbag 20 is in an unfolded condition, or expanded position, it may tend to take on a shape to accommodate objects placed within the internal space, and it may assume a suitably capacious internal volume. - When
bag 20 is in use, access to the internal volume, namelyinternal space 25 thereof, is governed by aclosure member 28. In the illustrated example,closure member 28 may be a linear tracked closure device in the nature of azipper assembly 30 mounted between the upper margins of the side wall panels, namely front andrear panels - While
bag 20 can be made water-tight by other means, it is preferred to provide aliner 32 shown inFIG. 7 a that can be either sewn in place, or may be removable, or it may be wholly or partially invertible. A liner that is at least partially invertible, or removable, is preferred, since this may facilitate washing. - When the bag is not in use, it may tend to be readily foldable. First, the bag is collapsed by lying it flat and folding
front sidewall panel 22 near its bottom margin such thatbase panel 26 lays in a more or less flat orientation relative to the rear sidewall panel, 24, as seen inFIGS. 6 a and 6 b. In this, collapsed, generally flattened, position, theupward edge 36 of base panel 26 (namely the edge that is folded towardfront sidewall panel 22 and hence toward what would normally be the upper parts ofbag 20 generally) acts as a former, or form, for bending the body ofbag 20 to define a first fold by rotating the folded part of the bag in the direction of arrow ‘A’ (seeFIGS. 6 c & d) (counter-clockwise in the Figures, but arbitrary since it would be clockwise if viewed from the other direction, andbag 20 can be made with either a left handed or right handed fold). This permits one portion ofbag 20 to fold over on another portion, in the manner of folding a page over on itself. - When page-folded in the direction of arrow ‘A’,
bag 20 will arrive at the folded position shown inFIGS. 3 a-3 g, in which position it is held by a securement member, or retainer, identified as 34 inFIG. 46 , which may take the form of a pair of mating securement strips such as hook-and-eye velcro (t.m.) strips 38 and 40 mounted, respectively, to the upper body portion offront side panel 22 adjacent the upper margin thereof, and to the distal margin region ofbase panel 26 that is distant from the forming edge ofbase panel 26, such that whenbase panel 26 is overfolded in the direction of arrow ‘A’ strips 38 and 40 are brought into mating contact in a single relatively uncomplicated, and possibly quite swift motion. The result is a soft sided insulated container that has been collapsed, and then panel-folded over on itself (i.e., not scrunched into a tight roll) to a flat folded position, or flat folded condition, such as may be suitable, for example, for stacking, transport, display or storage. Display and storage is facilitated by asuspension member 42, in the nature of ahang loop 44, mounted generally centrally along the upper margin offront panel 22. To the extent thatloop 44 is mounted higher than the center of gravity ofbag 20 more generally,bag 20 will tend to hang with the upper margin offront panel 22 in a generally horizontal orientation. An alternate hang loop location is shown inFIG. 3 h, in which hangloop 44 is located at an end edge such that, when displayed for sale,bag 20 may tend to hang in a vertical, or substantially vertical orientation, namely with the long dimension (as folded) running up and down, i.e., more or less vertically. - Unfolding may tend to be a similarly uncomplicated and convenient procedure: the
retainers 38 & 40 are released, the bag is unfolded and it is ready to accommodate objects that need to stay cool or warm. When unfolded, lifting members in the nature of handles, or straps 46, 48 that extend from the upper regions of the sidewall panels, namelypanels bag 20, and may, as illustrated inFIG. 1 , be found suitable for carrying over a person's shoulder. Alternatively, or additionally, as illustrated inFIG. 2 ,bag 20 is provided withauxiliary securement devices Securement devices bag 20 from tipping over when travelling, such as when bringing cold items home from the grocery store, or such as when transporting refreshments to a campsite, picnic site, playing field, or arena. - Considering the construction of
bag 20 in greater detail, reference is made to the developed views ofpanels FIG. 8 . In the developed views shown in the example ofFIG. 8 , the side panels, namely insulated front andrear panels marginal edges -
Insulated base panel 26 is also generally rectangular, having a long dimension measured alonglong edges - The width ‘w’ of
base panel 26 may also be related to the overall height ‘y’ ofbag 20 when unfolded. That is, it is preferred thatretainer strip 40 on the off-side ofbase panel 26 mate withretainer element 38 onfront panel 22 ofbag 20 at a region close to theupper edge 70 ofbag 20 generally, to yield a neatly folded bag for efficient packing, shipping and display. To that end, with allowance for a bend radius, it is preferred that the height ofbag 20 be within +/−20%, and more preferably within +/−10%, of an integer multiple of the width ofbase panel 26. It is also preferred thatbag 20 be a double or triple folded bag. While bags with a greater number of folds are possible, the benefits of ease of manufacture, ease of folding, and ease of use may not necessarily tend to be as marked for a larger number of folds. - The upper edge, i.e., upper
marginal edge 54, of each of theside panels base panel 26, such that when theclosure member 28 is secured,bag 20 may tend to have an upwardly broadening profile when viewed from the side, and an upwardly narrowing profile when viewed from the end. In the embodiment ofFIG. 8 , the periphery ofbase panel 26 is equal to 2(2a1+b). Each of the side wall panels, namely front andrear panels bottom edges 56 extends about one half of the periphery ofbase panel 26, having a central portion of length ‘b’ and two opposite end portions, each of length ‘a1’, or thereabout. In this instance, whenbag 20 is collapsed, andbottom panel 26 is laid flat as inFIG. 6 a, a triangular end fold will be created, made up of the triangular folds 72 of the bottom corners of the side wall panels, those triangular portions being indicated astriangular regions 74 onFIG. 8 , and being bounded byfold lines - When assembled, front and
rear panels edges bottom edges 56 are sewn to the long sides, or edges 62, 64 ofbase panel 26, and the end portions are sewn to the half-width portions of end edges 66, 68 ofbase panel 26. Theclosure member 28 has the form ofzipper assembly 30 as noted above. As shown inFIG. 5 ,zipper assembly 30 has afirst side region 84, asecond side region 86, and azipper 87.Side region 84 has an outboard, or distal edge seamed intofront panel 22, and an inboard edge, or margin, to which one set of teeth ofzipper 87 is mounted.Side region 86 has an outboard, or distal edge that is seamed intorear panel 24, and an inboard edge along which the other set of teeth ofzipper 87 is mounted. In the usual manner, motion ofzipper car 91 along the track defined by the zipper teeth controls the opening and closing of the zipper assembly, and hence controls access to the enclosedspace 25 ofbag 20 more generally, thereby permitting objects to be introduced into, or to be drawn out of,bag 20.Side regions web member inner wall member inner wall members space 25 ofbag 20 so that the reflective surface is oriented toward objects contained in bag 20) surface, and may preferably be made of THERMOFLECT™ material. In another embodiment,inner wall members zipper assembly 30 occurs at a height downset from the very edge of the side wall panels by a distance δ1 roughly equal to the half width δ2 ofzipper assembly 30 such that whenbag 20 is folded,side regions - The overall width of the web-like region, or panel formed by
zipper assembly 30 is less than, if not significantly less than, the width ‘w’ ofpanel 26 such that the through thickness ofbag 20 at the elevation ofclosure member 28 is small, if not very small, relative to the length ofclosure member 28, and relative to the length of uppermarginal edge 54. It is preferred that the overall width of the closure member be less than 60% of the width of the base, and, in a particular example, is about half the width. As such, the ratio of through thickness to bag length may be about a2/(2a2+b). This value may typically lie in the range of 1:5 to 1:8 and more narrowly in the range of 1:6 to 1:7½. The closure member is mounted between the upper margins of the side wall panels, namelypanels - The sidewall construction is as shown in
FIG. 5 . Each ofsidewall panels web 80, that may be made of a sheet or woven webbing fabric, such as woven nylon, canvas, or other suitable cloth. Each ofsidewall panels web 82, that may function as a water proof lining, and may be made of a sheet of extruded plastic of the types of polymers that include vinyl (t.m.) or nylon (t.m.), or sheets of monolithic extruded vinyl (t.m.) or nylon (t.m.) sewn together. - An insulating
layer 89 is trapped between the inner andouter webs layer 89 may preferably be a closed cell polyurethane foam, but could be an open cell insulating foam, or other type of insulating layer, or it may include more than one insulating layer. - As above, in one embodiment the inner sidewall web member may either be made of a reflective material, such as THERMOFLECT™ sheeting, or may have a reflective surface oriented to face toward objects contained within
bag 20. Alternatively,inner web 82 member may be made of a water proof extruded nylon or vinyl sheet, or seamed sheets, to discourage leakage of liquids frombag 20. - Optionally, as shown in
FIG. 7 a water-proof liner 32 may be included, in addition to the internal sidewall web sheet, namely,web 82. Where the inner sidewall surface is reflective, the liner may preferably be translucent, or clear, to permit the reflective surface of the inner wall to be seen. Although the liner can be rigidly sewn in place to prevent the liner from being inverted, it is preferable for the liner to be either removable, or to be sewn in at its upper peripheral edges, thus permitting at least partial inversion of the liner as shown inFIG. 7 a, and hence to facilitate washing. Theoptional liner 32 may be made from a single polymer sheet, have afirst side region 88 and asecond side region 90. The side regions are heat welded along their side margins to form a pouch, or pocket, commensurate with the general size and shape of the inside ofbag 20, and have their upper margins seamed into the side-walls ofbag 20 at the juncture with the side regions ofzipper assembly 30.Bag 20 will then tend to be water-proof to a height corresponding to the height ofclosure member 28. It is advantageous, and desirable, for a soft sided insulated wall assembly for use as a cooler, such asbag 20, to be generally leak resistant, if not even more preferably, water-proof. - The cross-sectional structure of
base panel 26 is generally similar to the cross-sectional structure of the sidewall panels, having an inner wall skin, or panel orweb 114 that is of consistent construction to the inner wall sheet orweb 82, and an outer wall skin, orweb 116 that is of consistent construction toouter web 80. It may be noted that theouter web 80 may not be the same colour asouter web 116, and may not be of the same weave or fabric. It may have a heavier, more wear resistant fabric, or coarser, more wear resistant weave, sincebase panel 26 may tend to be placed in contact with the ground, or other underlying surface whether a paved roadway, concrete, rocks, earth, flooring, or some other support surface against which it may be expected to be slid, or to rub, in the course of use. -
Base panel 26 may also have an insulated layer, 118, captured betweenwebs base panel 26 has a stiffenedform member 120, that may be in the nature of a rectangular, hardplastic sheet 100 of modest thickness located between insulatinglayer 118 andouter web 116.Sheet 100, in plan view, has dimensions that are the same as, or roughly the same as, dimensions ‘b’ and ‘w’.Form member 120 serves two functions, the first being to provide a stiffened base upon whichbag 20 can tend preferentially to stand, and which may tend to aid in discouragingbag 20 from tipping over as easily as it might otherwise do. The second is to provide a forming edge to base 26 by which to pre-determine the fold line, or lines, at whichbag 20 will tend to want to bend when being folded up. This may tend to discourage the tight-rolling ofbag 20, and to encourage repeatable panel folding to and from the convenient folded form shown inFIGS. 3 a-3 g. -
Form member 120 need not be a continuos monolithic panel. It could be an open frame, or a peripheral member sewn in place to provide a reinforced edge. In one embodiment, even withoutform member 120, the seaming at the edge ofinsulated base panel 26 may tend to yield a natural fold location at whichbag 20 may tend to prefer to bend or fold. The inclusion ofmember 120 may tend to strengthen or to enhance this tendency. Modestly sized feet, stand offs, or pads, 102, may optionally be provided to the underside ofpanel 26. Further,form member 120 may, by itself, tend to have a greater flexural stiffness that the adjacent layer of insulated material, and when taken together the resultant bi-laminar, or possibly multi-layered assembly, has a combined flexural stiffness that may tend to be significantly stiffer than any other portion ofbag 20. - Lifting members, or carrying members, in the nature of straps, or
web bands side wall panels bottom panel 26 and theside wall panels bands central portion FIG. 1 . - Auxiliary securement straps 50, 52 shown in
FIGS. 1, 2 and 6 a and 7 b have a root end sewn into the upper region of the seam betweenpanels closure member 28 The distal ends ofstraps bear velcro patches 110, suitable for securing in to the trunk fabric of an automobile (or, alternatively, mating velcro patches can be mounted inside the automobile for this purpose). When not in use, the ends ofstraps mating velcro patches 112 located on the outward face offront side panel 22.Straps rear panel 24. - In the alternate embodiment of
FIG. 9 a, an alternateinsulated base panel 126 has the same structural and thermal properties asbase panel 26 in general, but differs in that rather than being rectangular in plan view,base panel 126 has a length, or long dimension, indicated as ‘b2’ and a width indicated as ‘w’. These dimensions need not be the same as ‘b’ and ‘w’ indicated above, but may be. In this case the ends ofpanel 126 are not squared, but rather are mitred at an angle α relative to the perpendicular to the long edges. The length along each of the mitred edges is then given as ‘a2’. In this case the half width ofbase panel 126 is not a2, but rather a2 cos α. The periphery ofbase 126 is 2(b 230 2a2). - The adjoining side panels are again taken to be ‘X’ wide, and ‘Y’ high, and to be of the same general insulated construction as
side wall panels FIG. 5 . The length of thelower margin 124 of each of the adjoining side panels 132 is then (b2+2a2). Each panel will then have a “large fold” 128 and a “small fold” 130.Large fold 128 is a nominal indication of where there would be a fold in the side wall of the bag in the fully unfolded condition ready for filling with diverse objects, if a sharp crease were made. In actual use, the corner will not be creased, but rather will tend to take on a more rounded, or radiused form, and the bag will tend to conform to the shape and bulkiness of objects placed in it, so the actual corner of the bag may have a bulging appearance rather than a sharp corer.Small fold 130 indicates the actual location of a fold that is made when the bag is in a collapsed state and folded for storage. - The angle β1 of
small fold 130, when the bag is folded for storage, will then tend be roughly equal to the bisector of the angle between the extension of the horizontal fold line defined by the edge ofbase 126 and the mitred edge, namely ½(90−α). -
Base panel 126 need not necessarily be a straight sided polygon, as arebase panel 26, but could have somewhat rounded, oval or irregular ends. However, in such a case the end fold may tend to be puckered, and may tend not to lie as flat as might otherwise be considered desirable or preferable. However, a straight sided polygon is advantageous, and a square-cornered (i.e., rectangular) end is preferred since it may tend to facilitate manufacture and efficient use of materials and reduced waste cuts. -
Bag 20 is a “double fold” bag. That is,base panel 26 is folded flat at a first fold (the offside edge of base panel 26), and then sidepanels - An example of a
single fold bag 140 is shown inFIGS. 10 a-10 g, the views corresponding generally to the views ofdouble fold bag 20 shown inFIGS. 3 a-3 g respectively. Except as otherwise indicated,bag 140 has the same general construction asbag 20, having insulatedside wall panels insulated base panel 146, with asimilar closure member 148 and optional liner similar toliner 32.Bag 140 differs frombag 20 in being a single fold bag, rather than a double fold bag, and has changes in dimension and aspect ratios accordingly. In place of the arrangement ofretention member 40, aretention member 150 would might tend to be mounted near the lower margin of thefront panel 142, and another, mating,retention member 152 would be mounted near the upper edge of the front panel, the two mating when the base panel is moved to a collapsed position in which it is laid over againstside panel 142. - An example of a
triple fold bag 160 is shown inFIGS. 11 a-11 g.FIG. 11 a showstriple fold bag 160 in a collapsed, or flattened condition immediately prior to folding into the storage position (or, alternatively and equivalently, immediately after being unfolded, and before filling).Bag 160 is presented as being symbolic of not only a bag having three folds. In general, for a bag, such asbag 160, having three or more folds, theretention member 178 would be located on therear face 164 roughly the width of two folded panel regions below the upper edge of the front face with thesecond retention member 174 being mounted near or at the upper edge, such that, when folded the twoparts FIG. 10 a. An example of a triple fold bag is shown inFIG. 1 a. - In the alternate embodiment of
FIGS. 12 a and 12 b, anadditional securement member 188 is mounted near the bottom margin offront sidewall panel 22.Securement member 188 may include a fastening that may be employed releaseably to engagestrap 46. When engaged bysecurement member 188,strap 46 may be used to carry thebag 20 in a second orientation which may be generally perpendicular to the first orientation shown inFIG. 1 . The second orientation may be a flat-wise orientation, such as may be suitable for carrying objects such as a pizza box, when it would be desirable to maintain the pizza in a substantially horizontal position during transport.Securement member 188 may be in the form of astrap 190 mounted near the bottom margin of thefront sidewall panel 22,strap 190 havingreleasable fastening members 192 arranged to allow the formation of a releasable loop.Securement member 188 may have aproximal root end 194 sewn into the seamed junction betweenbottom panel 26 andfront sidewall panel 22 and may have adistal end 196 that may be free to loop over the proximal end.Releasable fastening members 192 may include a pair of mating securement strips such as hook-and-eye flexible fabric strips sometimes identified as VELCRO™, mounted at respective ends thereof. Thereleasable fastening members 192 may be spaced sufficiently far apart to allow thestrap 190 to loop over thestrap 46, in a manner which engages thefastening members 192 to each other and secures thestrap 46 in the region of the bottom margin of thesidewall panel 22. Other kinds ofreleasable fastening members 192 such as, for example, snaps, could be used. Althoughsecurement member 188 is shown mounted tofront sidewall panel 22, it is possible to mountsecurement member 188 torear sidewall panel 24 to engagestrap 48. When so engaged, the bail, or hand grab portion ofstrap 46 when carried as inFIG. 1 , becomes the root of one side of a double strap handle, the twoportions 198 then being in a position to be grasped in one hand as the bails of an auxiliary handle. The placement ofsecurement member 188 may be such that the span ofportions 198 passes above the center of gravity ofbag 20, as loaded, for example, with a pizza, and by holdingportions 198 together over the center of gravity,bag 20 may tend to be carried in a generally flat, or horizontal orientation. - In the examples discussed so far, the upper edge of a bag having rectangular sidewall panels is Li=2(a1)+(bi), whether i is 1 or 2. As shown in
FIG. 9 b, the side panels ofbag 20 need not be made from rectangular sheets, but could be made from sheets that are of a different shape, such as the trapezoidalside panel sheets 180. In this case, theresultant bag 182 would tend to have anupper edge 184 for which the length L2 would tend to be greater than the sum of the b+2ai, or, put generically, where Li is greater than half the total periphery of thebase panel 186. This may tend to yield a more flared appearance when the bag is seen in an unfolded side view, and may tend to yield a larger access opening, such as may permit objects of greater relative size to be introduced into the insulated spaced. - Although the embodiments illustrated and described above are preferred, the principles of the present invention are not limited to these specific examples which are given by way of illustration. It is possible to make other embodiments that employ the principles of the invention and that fall within its spirit and scope of the invention. Since changes in and or additions to the above-described embodiments may be made without departing from the nature, spirit or scope of the invention, the invention is not to be limited to those details, but only by the appended claims.
Claims (6)
1. A foldable insulated bag comprising:
an insulated wall structure, defining an insulated space therewithin;
said wall structure having a closure member operable to allow access to said insulated space;
a carrying member attached to said wall structure, said carrying member being moveable between a first position for carrying said bag in a first orientation, and a second position for carriage of said bag in a second orientation;
a securement member attached to said wall structure, said securement member being operable to engage said carrying member attached to said wall structure in the second position;
said wall structure, when empty, being movable to a first, flattened position;
said wall structure being foldable from said first, flattened position to a folded storage position; and
said wall structure being securable in said folded storage position.
2. The foldable insulated bag of claim 1 wherein said bag has a bottom region and a top region, said carrying member is mounted to said bag near said top region and said securement member is mounted near said bottom region.
3. The bag of claim 2 wherein said securement member is a strap having a proximal end and a distal end, with a first releasable fastening member mounted at the proximal end and a second releasable fastening member mounted at the distal end, said first releasable fastening member arranged for mating engagement with said second releasable fastening member.
4. The bag of claim 3 wherein said first and second releasable fastening members are mating hook-and-eye-fabric strip portions.
5. The bag of claim 1 wherein said bag has a length, a breadth and a through thickness, said through thickness being small relative to both said length and said breadth; in said first orientation said length and breadth are oriented in an up-and-down orientation when carried and, in said second orientation said length and breadth are oriented in a flat-wise orientation when carried.
6. A foldable insulated bag comprising:
an insulated wall structure, defining an insulated space therewithin;
said wall structure having a closure member operable to govern access to said insulated space;
said wall structure having a length, a breadth and through thickness, said through thickness being smaller than either said length or breadth;
said wall structure having a face defined by said length and said breadth, said face having an upper margin and a lower margin;
a carrying member secured nearer to said upper margin than to said lower margin, for carrying said face in an up-and-down orientation;
a securement member mounted closer to said lower margin than said upper margin, operable to engage and secure said carrying member for carriage of said face in a flat-wise orientation;
said wall structure, when empty, being movable to a first, flattened position;
said wall structure being foldable from said first flattened position to a folded storage position; and
said wall structure being securable in said folded storage position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/958,660 US20050117817A1 (en) | 2003-01-13 | 2004-10-06 | Foldable insulated bag |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/340,851 US7682080B2 (en) | 2003-01-10 | 2003-01-13 | Foldable insulated bag |
US10/958,660 US20050117817A1 (en) | 2003-01-13 | 2004-10-06 | Foldable insulated bag |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/340,851 Continuation-In-Part US7682080B2 (en) | 2003-01-10 | 2003-01-13 | Foldable insulated bag |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050117817A1 true US20050117817A1 (en) | 2005-06-02 |
Family
ID=46303035
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/958,660 Abandoned US20050117817A1 (en) | 2003-01-13 | 2004-10-06 | Foldable insulated bag |
Country Status (1)
Country | Link |
---|---|
US (1) | US20050117817A1 (en) |
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