GB2214631A

GB2214631A - Thermal storage vessels

Info

Publication number: GB2214631A
Application number: GB8811741A
Authority: GB
Inventors: Keith Barnwell
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-02-02
Filing date: 1988-05-18
Publication date: 1989-09-06
Anticipated expiration: 2008-05-18
Also published as: GB2214631B; GB8811741D0

Description

FIELD OF THE INVENTION The present invention relates to a cup or cup like receptacle for receiving and heat treating, either by way of heating or cooling, a beverage container such as a can or bottle of beer.

BACKGROUND OF THE INVENTION To date, there is very little available in the way of bottle or can insulating jackets. One product that is available in the market place is in the form of a styrofoam cup which can be slid over the bottom of a can or bottle. However, this cup has no direct heating or cooling effect on the beverage in the can or bottle and provides an insulating effect only.

Very recently a new refrigeratable beverage container holder has been introduced to the market place.

This particular product includes a interior refrigeratable liquid for providing a cooling effect on a container, typically a beer can, fitted in the holder. Descriptions of this product as well as methods of manufacturing of the product are found in United States Patents 4,163,374, 4, 183, 226,4,299,100 and 4,378,625 all owned by Freezesleeves of America Inc.

The above patents describe a number of different holder designs. However, each of these designs is based on the standard styrofoam cup as earlier described with the dead air space between the styrofoam cup and the beer can being filled by refrigerant or a refrigerant lining physically engaging the beer can. In use, it has been found that if the refrigerant is truly effective it cannot touch the beer can in as much as this may result in freezing of the can contents.

Another difficulty found in the Freezesleeve design where, as shown for example in Figure 4 of United States Patent 4,163,374, the refrigerant is simply trapped between an inner lining and the styrofoam cup is to provide a seal which will not allow leakage of the refrigerant. According to United States Patent 4,163,374 this is achieved by physically embedding a part of the lining into the styrofoam cup. However, again it has been found that in use this type of sealing is not entirely effective because of the weakness of the styrofoam which tends to crack and break resulting in the refrigerant leaking between the lining and the cup.

United States patent 4,183,226 shows in Figures 2 and 3 two other embodiments of the Freezesleeve's holder.

Each of these embodiments comprises a totally independent refrigerant lining again designed to circumferentially engage the beer can. Although these two linings do not suffer from the same leakage problem described above, they are difficult and expensive to manufacture and do not present any surface for positive engagement with the outer styrofoam cup.

SUMMARY OF THE PRESENT INVENTION The present invention provides a heat treatment receptacle for a beverage container. The receptacle comprises an outer insulating cover and an insert within the insulating cover which is temperature settable for influencing the temperature of the beverage container.

The insert is in the form of inner and outer cup-like members each of which comprises an opened top closed bottom, generally cylindrical, body and an outwardly extending flange or shoulder around the open mouth of each cylindrical body. The two cup-like members are telescopically interfitted with one another having bottom to bottom and flange to flange contacts with the cylindrical body on the inner cup-like member being of reduced diameter to that of the outer cup-like member defining a wall gap in the insert. A temperature conditionable liquid preferably in the form of a freezer gel is trapped in the wall gap.

The two flanges on the cup-like members with the flange on the inner cup overlapping the flange on the outer cup extend outwardly over the upper edge of the insulating cover with the insert and the cover then being locked together by means of a snap fitted ring at the mouth of the receptacle. This ring includes an inwardly directed lip of lesser interior diameter than the insert with substantial overhang above the insert for gripping on the container and for preventing its contact with the insert when the container is fitted into the receptacle.

BRIEF DISCUSSION OF THE DRAWINGS The above, as well as other advantages and features of the present invention, will be described in greater detail according to the preferred embodiments of the present invention in which: Figure 1 is a perspective view showing a beverage can fitted into a cooler cup according to a preferred embodiment of the present invention; Figure 2 is a partially sectioned perspective view showing only the cooler cup of Figure 1; Figure 3 is an enlarged sectional view of one side of the cooler cup and fitted beverage can of Figure 1; . Figure 4 is a view similar to Figure 3 with the beverage can removed and showing the removal of the sleeve insert from the outer insulating cover; Figure 5 is a sectional view showing a beverage can fitted into a cooler cup according to a further preferred embodiment of the present invention; and Figure 6 is an exploded perspective view of the cooler cup of Figure 5.

Figure 7 is a partially assembled sectional view of the gel containing insert of the cooler cup of Figure 5.

Figure 8 is an enlarged sectional view of the ring of the cooler cup of Figure 5.

DETAILED DESCRIPTION ACCORDING TO THE PREFERRED EMBODIMENTS OF THE PRESENT INVENTION Figures 1 and 2 show a heat treatment cup and in particular a cooler cup generally indicated at 1 for receiving a beverage container. Although the drawings show a beverage can, it is to be appreciated that a bottle or even a glass can also be used with the heat treatment cup of the present invention.

The cooler cup comprises an internal sleeve 3 and an external insulating cover 5. The sleeve, which has a hollow construction, is filled with a non-toxic freezer gel 4 sealed within the sleeve. In order to temperature condition the cup, ie. bring it down to a cold temperature, it is simply placed in a refrigerator or freezer to lower the temperature of the gel in the sleeve which will then remain at its lowered temperature because of the insulating properties of cover 5. Also, the sleeve is isolated from any outside warming influences when the beverage can itself is fitted in position because the mouth of the cup, defined by inwardly extending ring 7, tightly grips on the beverage container and the container, when fully inserted, seats on the bottom portion 11 of the insulating cover. Accordingly, because there is no travel of air into or out of the cooler when the beverage container is in position, a dead air space 6 is trapped between the container and the cooling sleeve. Therefore, the container acts as a sealing member and the insert is subject to very little heat pick up while providing a cooling effect on the beverage container. As will be seen in Figures 1 and 3, the height of the cup is dimensioned to provide very little exposure of the container to keep heat pick up of the container from the ambient air to a minimum.

The insert itself can be reduced to a temperature where gel 4 actually freezes and although the purpose of the insert is to provide a cooling effect, it should not come into contact with the container which might otherwise freeze the beverage in the container. Accordingly, ring 7 of the insulating cover not only grips the can but provides the required spacing element for keeping the container and the insert out of contact with one another as shown in Figure 3.

The ring itself while being bendable under force is stiff enough to grip the container, preferably a beer can, to the extent that if the can is lifted the entire heat treatment cup remains positively engaged with the can. Furthermore, under a non-can engaging position, the ring projects inwardly with substantial overhang above the insert ensuring a large gap between the can and the insert. In its relaxed condition, the interior diameter of the ring is slightly less than the diameter of a standard beer can while the interior diameter of the insert is substantially greater than that of a beer can.

In the preferred form of the present invention, sleeve 3 comprises a molded plastic insert removable from the outer insulating cover which is preferably made from a closed cell soft foam material. The softness of the foam allows positive hand hold on the cup and also allows some stretching of the cover for fitting over the insert. In order to facilitate removal of the insert, ring 7, which is preferably a resilient plastic material, is provided with a plurality of slits 9 which substantially ease the upward bending of the ring to pull the insert out of the insulating cover. This split ring arrangement also eases the tight fitting of the container into the cup.

According to the-preferred construction described immediately above, both the cover and the sleeve are replaceable independently of one another if required.

However, it should be noted that there is no need to remove the sleeve from the cover during the temperature conditioning as, for example, placing the assembled structure in the refrigerator or freezer.

Figures 5 and 6 show a further cooler cup generally indicated at 21. This cooler cup comprises an outer insulating cover 23 and an insert 25 fitted within the insulating sleeve. Figure 7 shows details of the insert and Figure 8 shows details of the ring defining the mouth of the cup.

The insert itself is formed by a pair of hard plastic cup like members 27 and 31, with member 31 being telescopically fitted within member 27. Each of these cup like members comprises a main cylindrical body with a closed bottom as indicated at 28 on-cup like member 27 and at 32 on cup like member 31. Further, each of the cup like members is provided with outwardly extending lips as indicated at 29 and 33 on cups 27 and 31 respectively.

Receptacle 21, and in particular insert 25, has been designed for efficiency of manufacturing and structural integrity of the receptacle. This is achieved through the cup within a cup formation of the insert. As can be well seen in Figure 5, the cylindrical body on cup 27 is larger in diameter than that of cup 31 providing a hollow sidewall in the insert. This hollow sidewall is of consistent gapping completely around the insert due the provision of centering means to center cup 31 within cup 27. This centering means is in the form of a series of small outwardly extending centering fins 34 provided around the upper end of inner cup 31 and inwardly extending centering fins 30 provided around the lower end of cup 27. Therefore, when the two cups are interfitted with one another centering fins 34 on cup 31 abut the interior sidewall of cup 27 while centering fins 30 on cup 27 abut the exterior wall on cup 31 around the insert to ensure proper centering of the two cups and as mentioned above a uniform gap in the sidewall around the insert.

When the insert is fully assembled, as shown in Figure 5, the bottom wall 32 of cup 31 sits atop the bottom wall 28 of cup 27. Also, because the two cups are of generally identical height lip 33 of cup 31 sits flushly atop and is sealed to lip 29 of cup 27. Also note that outwardly projecting lip 33 is longer than lip 29 so that the two lips terminate at the same outer edge with lip 33 being lengthened inwardlyto span the hollow sidewall to the cylindrical body of cup 31.

The actual loading of the gel into the cup-like insert is achieved in the following manner. The gel is initially loaded directly into cup 27 following which cup 31 is then located in position. The gel itself is quite dense with very little flow characteristic necessitating not only a pushing together of the two cups but also a spinning of one cup relative to the other to displace the gel from the bottom of cup 27 up into the gap in the insert sidewall. In particular, cup 27 is rotated relative to cup 33 with the small fins 30 in the bottom of cup 27 acting in an impeller-like fashion to agitate the gel and cause it to move upwardly along the outside of cup 31 which is slowly being forced down into the rotating cup 27. Therefore, fins 30 not only provide a centering means at the bottom of the two cup-like members but in addition provide a means for proper dispersing of the gel during assembly of the insert itself.

After the gel is loaded, the bottom of cup 31 pushes down onto the bottom of cup 27 generally free of gel between the bottom walls of the two cups.

Accordingly, there is very little, if any, gel at the bottom of the insert where the can sits directly on the inner cup bottom wall 32.

Figure 7 shows the two cup-like members after loading the insert with gel and just prior to sealing the two cup-like members to one another. The gel after loading is prevented from escaping upwardly out of the insert by sonically welding lips 29 and 33 of the two cup-like members to one another. To assure a complete weld around the insert, lip 33 is provided with a continuous downwardly extending meltable plastic bead 36 while lip 29 is provided with a continuous upwardly extending similar bead 28. During the sonic welding these two beads melt to seal the lips to one another. The reason for providing two beads inwardly and outwardly surrounding one another is that should one of the beads not properly seal at any point around its periphery the other bead provides a second seal to cover any possible gaps and prevent leakage of the gel from the cup.

Another feature provided by the cup in a cup insert construction is that it again simplifies the construction of the outer insulating cover which is nothing more than a hollow cylindrical sleeve of relatively stretching foam material. The bottom of the cooler cup is provided by the bottom wall of the insert itself rather than the insulating cover. The insert being formed by a relatively hard plastic and having the double thickness of bottom walls 32 and 28 is much more durable and resistant to damage than for example a styrofoam bottom as found in the prior art. In addition, by making the bottom of the insert the bottom of the cup this allows the molding of a hard plastic sweat bead 36 on the bottom of insert cup 27. This sweat bead eliminates a full contact of bottom wall 28 with any supporting surface on which the cooler cup is placed providing a condensation guard to prevent both moisture marking of and sticking to the supporting surface.

As described above, one of the unique features of the present invention is in the gripping of the upper ring of the cooler cup onto the container or beer can with no contact between the gel filled sidewall of the insert and the can. Figures 5 and 6 show cooler cup 21 as being provided with an upper ring 35 specific details of which are shown in Figure 8 of the drawings.

Ring 35 comprises an outer sidewall 38 having an inwardly directed undercut portion 39, a top ring portion 40 and a series of inwardly directed gripping portions 37. The undercut portion 39 on the outer ring sidewall snap fits over the insert flange which extends slightly outwardly beyond the insulating cover 23 to provide an interlock surface between the undercut ring and the insert. Although there is also a slight grip of ring sidewall 38 on outer cover 23, this is not the force holding the outer cover in position over the insert.

Rather, the cover remains in position due to its stretch fitting over the insert.

The top ring wall 40 which extends across the top of the gel filled insert includes a reinforcing rib 41 just outwardly of the container or can grip portions 37 of the ring. These portions 37 are preformed with a slight downward bend as best seen in Figure 8 of the drawings for easing the tight fitting of the can down through the ring. However, the preset down bending of the ring portions 37 has the opposite affect when attempting to pull the can out of the ring and therefore provides a very tight grip on the can. In fact, the tightness of this grip is such that there is essentially no movement of the lower end of the can which might otherwise result in its coming into contact with the gel filled walls of the insert.

Figure 8 shows another feature of the ring where it will be clearly seen that the gripper portions 37 are of decreasing material thickness from reinforcing rib 41 inwardly to their free inner ends. Again, this feature enables a slight downward bending of the inner end of the gripper portions for easing the can fitting through the ring with increased outward resistance to bending of the gripper portions which are further strengthened against bending at the reinforcing rib 41. This feature provides a centering of the can by the ring in the insert with the ring being resistant to collapsing which might otherwise allow the can to shift into contact with the gel packed wall of the insert.

As will be clearly apparent from Figure 5, although gripper portions 37 do resist downward bending, they will, if pushed sufficiently hard, bend downwardly to a point overlapping the interior wall of the gel insert.

Therefore, in both a relaxed as well as a fully down bent position, gripper portions 37 define the minimum interior diameter of the entire cup once again preventing can or container contact with the insert sidewalls.

The description immediately above relates primarily to a cooler cup however, It is to be appreciated that the term"heat treatment cup"and"temperature conditionable"includes heating as well as cooling of the cup and the present invention is also applicable to heating as well as cooling of a beverage container.

Furthermore, it is to be noted in both cases that the cup not only has insulating properties but, in addition, has the capacity to either lower or raise the temperature of a container fitted therein.

Although various preferred embodiments of the present invention have been described herein in detail, it will be appreciated by those skilled in the art, that variations may be made thereto without departing from the spirit of the invention or the scope of the appended claims.

Claims

CLAIMS 1. A heat treatment receptacle for a beverage container, said receptacle comprising an outer insulating cover and an insert within said insulating cover, said insert being temperature settable for influencing the temperature of the beverage container and comprising inner and outer cup-like members each of which comprises a main body having a closed bottom and an upper end flange, the body on said inner cup being of reduced diameter to the body of said outer cup thereby defining a hollow sidewall in said insert, said hollow sidewall containing a temperature conditionable liquid trapped in said insert by sealing said flange on said inner cup to said flange on said outer cup.
2. A heat treatment receptacle as claimed in Claim 1, including a bottom to bottom contact between said inner and outer cup-like members.
3. A heat treatment receptacle as claimed in Claim 1, wherein said temperature conditionable liquid comprises a dense gel substantially filling said hollow sidewall of said insert.
4. A heat treatment receptale as claimed in Claim 1, wherein said flanges of said cup-like-members sit immediately atop said outer insulating cover and extend slightly outwardly therebeyond, said receptacle further including a top plastic ring having an undercut portion snap fitted on said flange portions.
5. A. heat treatment receptacle as claimed in Claim 4, wherein said top plastic ring includes inwardly directed gripping portions which when bent downwardly define the minimum interior diameter of said receptacle for preventing beverage container contact with said insert.
6. A heat treatment receptacle as claimed in Claim 5, wherein said gripper portions decrease inwardly in thickness and are bent slightly downwardly-inwardly, said ring being provided with a reinforcing rib running around said gripper portions.
7. A heat treatment receptacle as claimed in Claim 1, wherein said insulating cover comprises a hollow opened sleeve, said closed bottom of said outer cup-like member of said insert providing a bottom wall for said receptacle.
8. A cup within a cup refrigerant insert for use in a beverage container cooler, said insert comprising an inner cup and an outer cup, both of said cups having closed bottoms and upper end outwardly extending flanges, said inner cup being of reduced diameter to that of said outer cup and being telescopically fitted therein to define a hollow wall region, said hollow wall region containing a freezable gel trapped in said insert by a flange to flange seal contact between said inner and outer cups.
9. A cup within a cup refrigerant insert as claimed in Claim 8, including upper and lower sets of centering fins between said cups, said lower set of centering fins providing agitation means during assembly of said insert for moving the freezable gel up into said hollow sidewall region, said closed bottoms of said cups abutting one another to substantially eliminate the presence of said gel therebetween.
10. An insert as claimed in Claim 8, including a double-sonic weld between said flanges of said cups.
11. A receptacle as claimed in Claim 10, wherein said double-sonic weld is formed from a first bead on said inner cup and a second bead on said outer cup, said beads being radially spaced and facing in opposite directions relative to one another between said flanges of said cups.
12. A heat treatment receptacle for a beverage container, substatially as herein described with reference to the accompanying drawings.
13. A cup within a cup refrigerant insert for use in a beverage container cooler, substatially as herein described with reference to the accompanying drawings.