Abstract:
A dispensing carton and method for dispensing beverage cans is disclosed. The carton enables end-users to easily remove cans from the carton without the common problem of additional cans inadvertently falling out. After removing tear outs, the dispenser flap is folded upon itself and then onto the lower panel to keep cans from rolling out. Optional locking tabs can be used to keep the flap folded. Optional thumb grips and added slits can make tear out removal easier and less trouble prone. The new carton uses existing size carton blanks and requires no added components and no added cost for materials or labor. Furthermore, no changes to manufacturing equipment or manufacturing processes in making carton blanks, assembling the cartons, filling the cartons or transporting the filled cartons are needed.

Description:
FIELD OF THE INVENTION 
     The present invention relates to cartons that package multiple cans of beverages and that incorporate tear out panels to permit dispensing of one can at a time. 
     BACKGROUND OF THE INVENTION 
     Cartons that package multiple cans of beverages, such as 12-pack beer cartons, and that incorporate tear out panels to permit dispensing of one can at a time are well known. The common problem of gravity causing multiple cans to fall through the dispensing opening is also well known. Prior art shows a number of attempts to solve this problem. The field is crowded due to the sizeable impact an improved carton can have on the multibillion dollar canned beverage market. For example, the introduction of the 6×2 12-pack initially labeled the FridgePack was reported by the Wall Street Journal to have increased sales of Coca-Cola&#39;s canned sodas by 10% and now the majority of soda 12-packs are 6×2. 
     U.S. Pat. No. 3,894,681 to Arneson et al. (Jul. 15, 1975) and assigned to the Federal Paper Board Company, Inc, describes a carton with tear out panel for dispensing. FIG. 4 of the &#39;681 patent shows how flap 92 extends over the cylindrical surface of can C to help prevent the force of other cans from pushing can C out of the carton. This method is still in common use for 4×3 12-packs of beer such as Coors. The problem is that the flap is bent with removal of each can and becomes weakened, and the flap is further weakened by creases or by becoming wet or humid. 
     U.S. Pat. No. 4,364,509 to Holley et al (Dec. 21, 1982) and assigned to Mead Corporation also describes a carton with tear out panel for dispensing. FIG. 4 of the &#39;509 patent shows flap 25 tucked in to close the opening to prevent dispensing, and FIG. 5 thereof shows the flap pulled out for dispensing. This method is not in common use. The problem is that multiple cans can fall through the dispenser when the flap is not tucked in and therefore, the flap needs to be opened and then tucked in again after removal of each can. 
     U.S. Pat. No. 4,396,143 to Killy (Aug. 2, 1983) and assigned to Manville Service Corporation also describes a carton with tear out panel for dispensing. FIG. 1 of the &#39;143 patent shows dispenser 50 prior to opening. FIG. 2 thereof shows the tear out panel pulled out for dispensing. Flaps 58, 60 extend down over the cylindrical surface of the visible can to help prevent the force of other cans from the pushing that can out of the carton. The problem, as with the aforementioned U.S. Pat. No. 3,894,681, is that the flaps are bent with removal of each can and become weakened, and the flaps are further weakened by creases or by becoming wet or humid. Tabs 62, 64 extend up to add further resistance to the can but they have minimal strength to do so as they are simply small tabs of thin paperboard material that are hinged at the crease of the lower corner. This method is not in common use. 
     U.S. Pat. No. 4,817,866 to Wonnacott (Apr. 4, 1989) and assigned to St. Regis Packaging Limited also describes a carton with an embodiment with tear out panel for dispensing. FIG. 4 of the &#39;866 patent shows the tear out panel pulled out for dispensing. Reinforced handle strap 20 extends down partially over the cylindrical surface of can 31 to help prevent the force of other cans from the pushing it out of the carton. This is not suitable for 4×3 12-packs because the reinforced handle strap would be centered and therefore, not in position to contact the end can on either the 4-can or the 3-can end panels. A further problem is that the reinforced handle strap is an added component that adds to packaging costs and packaging procedures. This method of preventing unwanted can dispensing is not in common use. 
     U.S. Pat. No. 5,228,590 to Blasko et al. (Jul. 20, 1993) also describes a carton with tear out panel for dispensing. FIG. 1 of the &#39;590 patent shows dispenser tear out panel 5 prior to opening. FIG. 2 thereof shows a separate component, a rigid article stopper 11. FIG. 3 thereof shows the tear out panel pulled out for dispensing with article stopper 11 inserted in the dispenser. The problem is that the rigid article stopper is an added component that adds to packaging costs and packaging procedures. This method is not in common use. 
     U.S. Pat. No. 5,368,194 to Oliff et al. (Nov. 29, 1994) and assigned to Mead describes a carton with tear out panel for dispensing. FIG. 7 of the &#39;194 patent shows the dispenser tear out panels prior to opening. FIG. 8 thereof shows the tear out panels pulled out for dispensing cans C1, C2, Cans are prevented from falling out due to the dispenser vertical opening being less than the OD of the can and the horizontal opening being shorter than the longitudinal length of the can. The problem is that smaller dispenser opening makes it impossible to grip both ends of the can. Furthermore, the reduced size of the opening requires twisting and prying to remove the can. Both these problems make it more difficult for the consumer to remove cans. This method is not in common use. 
     U.S. Pat. No. 5,878,947 to Hoy et al. (Mar. 9, 1999) describes a carton with tear out panel for dispensing. FIG. 1 of the &#39;947 patent shows dispenser tear out panel 50 prior to opening. FIG. 2 thereof shows the tear out panel pulled out for dispensing. After the flap is separated on its top and sides and then folded down, strips 58, 60 are connected together to form a triangle that is intended to prevent cans 52 from rolling out of the carton. One problem is that the procedure is somewhat complex and would be difficult for some consumers. The second problem is that the extended flap and the triangle need to be supported by a rigid shelf, or they will bend down and be rendered ineffective. This requires much greater shelf space, which is typically a premium in refrigerators. This method is not in common use. 
     U.S. Pat. No. 6,176,419 to Holley (Jan. 23, 2001) and assigned to Mead describes a carton with tear out panel for dispensing. FIG. 3 of the &#39;419 patent shows the dispenser open. Flaps 95, 97 extend down over the cylindrical surface of the visible can to help prevent the force of other cans from pushing it out of the carton. The problem, as with the aforementioned U.S. Pat. Nos. 3,894,681, and 4,396,143, is that the flaps are bent with removal of each can and become weakened, and the flaps are further weakened by creases or by becoming wet or humid. Flap 40 tries to solve this problem by being tucked under flaps 95, 97 to close the opening as shown in  FIG. 4 . However, this requires that the flap needs to be opened and then tucked back in after removal of each can. This method is not in common use. 
     U.S. Pat. No. 6,669,083 to Bates (Dec. 30, 2003) and assigned to Meadwestvaco Packaging Systems, LLC describes a carton with tear out panel for dispensing. FIG. 3 of the &#39;083 patent shows the dispenser open. One end of flap 140 is trapped behind panel 144 and therefore resists cans falling out. In addition, cans are prevented from falling out due to the dispenser vertical opening being less than the diameter of the can and the horizontal opening being shorter than the longitudinal length of the can. The problem as with aforementioned U.S. Pat. No. 5,368,194, is that smaller dispenser opening makes it impossible to grip both ends of the can. Furthermore, the reduced size of the opening requires twisting and prying to remove the can. The unexposed end of the can needs to be forced back against the pressure of the other cans to twist the can forward and out. Both these problems make it more difficult for the consumer to remove cans. This method is not in common use. 
     U.S. Pat. No. 6,578,736 to Spivey (Jun. 17, 2003) and assigned to Riverwood International Corporation, describes a carton with tear out panel for dispensing. FIG. 2 of the &#39;736 patent shows the dispenser being opened.  FIG. 3  thereof shows the dispenser open with the tear out section becoming a cradle for one can. The dispenser opening extends from the end panel onto the top panel and both side panels. This does not work for 4×3 12-pack cartons that dispense cans from the bottom (to enable a free flow of cans to the dispenser opening). Furthermore, the cradle takes up more shelf space in already crowded refrigerators. 
     U.S. Pat. No. 7,475,777 Fung et al. (Jan. 13, 2009) and assigned to Graphic Packaging International shows in FIG. 10 another variant of a carton that employs a can stop that extends outside the normal footprint of the carton. A problem is that the extended stop needs to be supported by a rigid shelf or it will bend down and be rendered ineffective. This requires greater shelf space, which is typically a premium in refrigerators. An additional problem is that the extended stop is the only means to prevent unwanted ejection of cans. Furthermore, the extended stop enables one can to sit partially out of the carton and this creates pressure on the can from the cans on top of it and behind it. This pressure puts greater force on the extended stop, increases its likelihood of failing, and causes a forceful ejection of cans from the carton when the extended flap fails. 
     U.S. Pat. Appl. Pub. No. 20040089671 to Miller (May 13, 2004) and assigned to C.W. Zumbiel Company describes a carton with tear out panel for dispensing. FIG. 4 of the &#39;671 patent application shows the dispenser being opened. FIG. 5 thereof shows the dispenser flap tucked back into top panel 16 of the carton. The purpose for tucking the flap up onto the top panel is to enable the opening to be closed for future transport and to preserve advertising or promotional messages on the outside of the carton. The dispenser opening is on the top panel and the end panel. This does not work for 4×3 12-pack cartons that dispense cans from the bottom (to enable a free flow of cans to the dispenser opening). 
     The following patents and patent applications represent prior art cartons with tear out panels for dispensing that are either similar to the aforementioned patents or that are further removed from the present invention. 
     U.S. Pat. No. 4,216,861 to Oliff (Aug. 12, 1980) is assigned to Mead. FIG. 6 thereof shows large tear out 54 on the side panel. 
     U.S. Pat. No. 4,577,799 to Oliff (Mar. 25, 1986) is also assigned to Mead. FIG. 2 thereof shows a large tear out on the side panel. FIG. 1 thereof also shows end panel 11 that has tabs 47 and 48 to lock together with end panel 7 instead of using glue. 
     U.S. Pat. No. 5,505,372 to Edson et al. (Apr. 9, 1996) and assigned to Graphic Packaging Corporation, shows in FIG. 2 a 24-pack carton with three large tear outs on multiple panels. 
     U.S. Pat. No. 7,467,713 to Harrelson (Dec. 23, 2008) and assigned to Graphic Packaging International, shows in FIG. 6 and FIG. 7 another variant of a 24-pack carton with a large tear out on both a side panel and an end panel. 
     U.S. Pat. Appl. Pub. No. 20030150759 to White (Aug. 14, 2003) is the last cited prior art and shows in FIG. 4 a variant of a 12-pack carton with large tear out on what is commonly used as the top panel. 
     None of the prior art shows a carton that packages multiple cans of beverages, such as a 4×3 12-pack carton, that incorporates a tear out panel that is effective at permitting the easy dispensing of one can at a time and at the same time prevents multiple cans from falling through the dispensing opening and that accomplishes this without incurring higher production costs or increasing the shelf space needed when the carton is opened. 
     SUMMARY OF THE INVENTION 
     The object of the present invention is to eliminate a common problem of cartons that package multiple cans of beverages which incorporate tear out panels to permit dispensing of one can at a time, specifically preventing multiple cans from inadvertently falling through the dispenser opening. 
     Another object of the present invention is to eliminate the common problem without adding another component to the packaging. 
     Another object of the present invention is to eliminate the common problem without increasing the shelf space needed when the carton is opened. 
     Another object of the present invention is to eliminate the common problem without adding to the size of the blank needed to construct the carton. 
     Another object of the present invention is to eliminate the common problem without adding to the material cost of the carton. 
     Another object of the present invention is to eliminate the common problem without adding to the production cost of the carton. 
     Another object of the present invention is to eliminate the common problem without requiring any change to the carton manufacturing equipment. 
     Another object of the present invention is to eliminate the common problem without requiring any change to the beverage packaging equipment. 
     Another object of the present invention is to eliminate the common problem without requiring any change to the size of the carton. 
     Another object of the present invention is to eliminate the common problem without requiring any change to distribution equipment. 
     Another object of the present invention is to eliminate the common problem without requiring any change to the retail shelf space or storage. 
     Another object of the present invention is to enable the can to be grasped by both its top and bottom surfaces to facilitate removal of the can from the carton. 
     Another object of the present invention is to eliminate the common problem without requiring any change to the carton manufacturing equipment. 
     Another object of the present invention is to eliminate the common problem and enable the carton to be substantially re-closed to facilitate transportation after opening. 
     Another object of the present invention is to eliminate the common problem without requiring any complicated procedures by the consumer. 
     The present invention provides a beverage carton that militates against multiple cans from inadvertently falling through the dispensing opening while minimizing the number of components and minimizing a cost of the carton. Furthermore, it does this without requiring changes to the separate pieces of industrial equipment needed for producing the carton blanks, assembling the cartons, filling the cartons or transporting the filled cartons. In addition, the procedure for opening the dispenser is easily understood and easily performed by the consumer. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWING 
       The above, as well as other advantages of the present invention, will become readily apparent to those skilled in the art from the following detailed description of a preferred embodiment when considered in the light of the accompanying drawings—in which: 
         FIG. 1A  is a perspective view of the present invention as a blank for a 12-pack carton prior to being folded and glued into a carton. The reference numbers in  FIG. 1A  correspond to the same components in  FIG. 1B . 
         FIG. 1B  is a perspective view of the present invention in a 12-pack carton after being folded and glued into a carton but prior to the dispenser being opened. 
         FIG. 2A  is a fragmentary perspective view of the present invention with the dispenser partially opened. 
         FIG. 2B  is a fragmentary sectional side elevational view of the present invention with the dispenser flap folded upon itself and cans completely within the carton. 
         FIG. 2C  is a fragmentary sectional side elevational view of the present invention with the dispenser flap folded upon itself and one can raised up on the folded flap as the can is moving out of the carton. 
         FIG. 2D  is a fragmentary sectional side elevational view of the present invention with the dispenser flap folded upon itself and one can raised upon the folded flap as it is moving farther out of the carton and pressing against the carton at the upper side of the dispenser opening. 
         FIG. 2E  is a fragmentary sectional side elevational view of the present invention with the dispenser flap folded upon itself and cans completely within the carton to illustrate the geometry of the dispenser flap dimensions. 
         FIG. 2F  is a fragmentary sectional side elevational view of another embodiment of the present invention with a shorter dispenser flap folded upon itself and one can abutting the dispenser flap. 
         FIG. 3A  is a fragmentary perspective view of another embodiment of the present invention with locking tabs with the dispenser partially opened. 
         FIG. 3B  is a fragmentary perspective view of the embodiment of the present invention shown in  FIG. 3A  with the dispenser partially opened and the dispenser flap folded upon itself and secured by locking tabs. 
         FIG. 3C  is a fragmentary sectional side elevational view of the embodiment of the present invention shown in  FIG. 3A  and  FIG. 3B . 
         FIG. 3D  is a fragmentary sectional side elevational view of the embodiment of the present invention shown in  FIGS. 3A-3C  with the dispenser flap folded upon itself and then folded down to the bottom surface of the carton and secured by locking tabs. 
         FIG. 4A  is a fragmentary sectional side elevational view of another embodiment of the present invention with a short dispenser flap that is not folded upon itself but is tucked under a can. 
         FIG. 4B  is a fragmentary sectional side elevational view of the embodiment of the present invention shown in  FIG. 4A  with a short dispenser flap folded down to the bottom surface of the carton and secured by locking tabs. 
         FIG. 5A  is a fragmentary perspective view of another embodiment of the present invention with a locking tab with the dispenser partially opened. 
         FIG. 5B  is a fragmentary sectional side elevational view of the embodiment of the present invention shown in  FIG. 5A  with a dispenser flap that is partially folded, tucked under a can, and secured by locking tab to the bottom surface of a carton. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     The following detailed description and appended drawings describe and illustrate various exemplary embodiments of the invention. The description and drawings serve to enable one skilled in the art to make and use the invention, and are not intended to limit the scope of the invention in any manner. In respect of the methods disclosed, the steps presented are exemplary in nature, and thus, the order of the steps is not necessary or critical. 
       FIG. 1A  illustrates components of the present invention as a blank for a 12-pack one-piece carton  100 .  FIG. 1B  illustrates components of the present invention as the 12-pack carton  100  assembled into a hollow carton and filled with storage cans of a beverage or the like (not shown). A right side panel  1 A is hingedly attached to a lower panel  8  (not shown in  FIG. 1B ), as is a left side panel  1 B (not shown in  FIG. 1B ). The upper structure is made from an upper right flap  8 A and an upper left flap  8 B. 
     The rear end closure structure is formed from five overlapping flaps: a rear upper right flap  83 R hingedly attached to the upper right flap  8 A, a rear upper left flap  82 R hingedly attached to the upper left flap  8 B, a rear right flap  3 R hingedly attached to the right side panel  1 A, a rear left flap  2 R hingedly attached to the left side panel  1 B, and a rear lower flap  6 R hingedly attached to the lower panel  8 . Each of the five flaps forming the rear end closure structure is affixed to at least one of the other flaps in the rear end closure structure. 
     The front end closure structure is formed from five overlapping flaps: a front upper right flap  83  hingedly attached to the upper right flap  8 A, a front upper left flap  82  hingedly attached to the upper left flap  8 B, a front right flap  3  hingedly attached to the right side panel  1 A, a front left flap  2  hingedly attached to the left side panel  1 B (not shown in  FIG. 1B ). and a front lower flap  6  hingedly attached to the lower panel  8 . 
     A can dispenser opening is formed from removing a right side tear out section  15   a  on the right side panel  1 A, a left side tear out section  15   b  on the left side panel  1 B (not shown in  FIG. 1B ), a tear out  35  on the front right flap  3 , and a tear out  25  on the front left flap  2 . When the tear outs  15   a ,  15   b ,  35 ,  25  are removed, a single beverage can is grasped by its ends and is removed from the bottom of the carton  100 . 
     The right side panel  1 A has a linear array of serrations  11 A to enable the right side tear out section  15   a  to be easily separated from the right side panel  1 A. Similarly, the front right flap  3  has a linear array of serrations  31  to enable the tear out section  35  to be easily separated from the front right flap  3 , and the front left flap  2  has a linear array of serrations  21  to enable the tear out section  25  to be easily separated from the front left flap  2 . The left side panel  1 B has a linear array of serrations  118  (not shown in  FIG. 1B ) to enable the left side tear out section&#39;s  5   b  (not shown in  FIG. 1B ) to be separated from left side panel  1 B similar to removal of tear out section  15 A from the right side panel  1 A. 
     Removal of the tear out  25  on front left flap  2  is made easier by a tab that extends downwardly from the lower corner of front left flap  2  to form a thumb tab  22  which is not glued to the underlying tear out section  35  or to the front lower flap  6 . After removal of the tear out  25 , removal of the tear out  35  is made easier by a thumb tab  32  on the lower corner of front right flap  3 , Thumb grip  32  is not glued to the underlying front lower flap  6 . 
     Alternately, a finger tab  16 A is separated from the right side panel  1 A by a cut-through  12 A that is pushed inwardly to allow gripping of the right side tear out section  15 A and thereby facilitates removal of the tear outs  15 A,  35 ,  25 ,  15 B ( 15 B not shown in  FIG. 1B ). The finger tab  16 A works optimally when it is over the bottom of the beverage can because the bottom surface of the beverage can is typically concave and that permits finger tab  16 A to be pushed further into the carton making tear out  15 A more easily grasped. A similar finger tab can be employed on the left side tear out section. 
     Removal of the tear out  25  is further made easier by a slit  28  that is longer than the other cuts in the serrations  21  and which extends from an edge  29  of front left panel  2  at corner  27 . The extended slit  28  helps insure that the carton  100  is torn in the proper location on the serrations  21 , and not torn in an unwanted area. 
       FIG. 2A  illustrates the present invention with the tear outs  25 ,  35  removed, and exposes slit  38  and a corner  37 . Removal of the tear out  35  is made easier by the slit  38  which is longer than the other cuts in the serrations  31 , and can extend to the outward edge  39  (shown in  FIG. 1B ) of front right flap  3  at corner  37 . 
     An adhesive or glue  9  applied under the flap  2  near the corner  27  adheres to the flap  3  and strengthens a bond therebetween at this location. This also helps insure that the carton  100  is torn in the proper location, on the serrations  31  and is not torn in an unwanted area. 
     The application of the glue  9  is minimized or eliminated on the overlapping surfaces of the tear out  25  (not shown in  FIG. 2A ) and the front lower flap  6 , and on the overlapping surfaces of the tear out  35  and the front lower flap  6 . This facilitates removal of the tear outs  25 ,  35  (not shown in  FIG. 2A ) and minimizes the chance of tears in the front lower flap  6 . 
     Removal of the tear outs  25 ,  35  enables the can to be grasped by both its top and bottom surfaces to facilitate removal of the can from the carton. 
     A height of the tear out  15 A is substantially the same as a diameter of the beverage can to enable easy extraction of the cans from the carton  100 . The lower corner  27  of the front left flap  2  and the lower corner  37  of the front right flap  3  extend farther down than the cut out  15 A, and thereby provide additional resistance to cans inadvertently falling out. 
       FIG. 2A  illustrates the dispenser of the present invention after removal of the previously described tear outs  15 A,  35 ,  25 ,  15 B. A seam  81  is a line formed by the hinged attachment of the front lower flap  6  to the lower panel  8 . In conventional cartons, the seam  81  is typically partially serrated so that the front lower flap  6  can be removed along with the tear outs  15 A,  35 ,  25 ,  15 B. In the present invention, the seam  81  does not have to be serrated, and the front lower flap  6  is not removed. 
     Instructions or other indicia  63  can be printed on the front lower flap  6 , or anywhere on the exterior of the carton  100 . The instructions  63  can be text, diagrams or both. 
     On the front lower flap  6 , a lower half  60  abuts an upper half  65  along a fold line  69 . Fold line  69  is made of a line of serrations or is a linear indentation to facilitate bending.  FIG. 2B  illustrates the upper half  65  folded inward and down onto the inner surface of the lower half  60  to form a folded flap  600 , and then the folded flap  600  is folded down onto the lower panel  8 . Fold line  69  is located at a substantially midpoint between an upper edge  61  of front lower flap  6  and the line formed by the hinged attachment of the front lower flap  6  to the lower panel. 
     The fold line  69  abuts a cylindrical outer surface  201  of a can  200  and prevents the can  200  from inadvertently rolling out of the carton  100  in the same manner as a wheel chock prevents a wheel from rolling. It is in effect a wheel chock with a height of at least twice a thickness of a paperboard from which the carton  100  is produced. In practice, the effective height of the double folded flap is substantially greater than twice the thickness of the paperboard. A double-folded flap of 0.020 inch paperboard can create an effective height exceeding 0.125 inches. 
     Removal of the can  200  from the carton  100  also requires that the can  200  move up over the two layer folded flap, as illustrated in  FIG. 2C . This upward movement requires forcing a can  210  and a can  220  upward, both of which are located above the can  200 . By this required action, the present invention thereby creates a second means to prevent inadvertent ejection of cans. 
     As the can  200  is pulled out through the dispenser opening, as illustrated in  FIG. 2D , the additional height of the can  200  as it rolls over the double-folded flap  6  requires greater deflection of the dispenser opening at its lowest edge identified by the extended slit  38 . The present invention thereby creates a third means to prevent cans from inadvertently falling out. 
       FIG. 2E  illustrates the geometry of the preferred dispenser flap dimensions. The dimension from a center  206  of the can  200  to the flap fold line  69  is a radius of the can  200 , as is the dimension from a center  206  of the can  200  to the bottom surface of lower panel  8  at a point of contact  801 . A distance from the seam  81  to the fold line  69  when added to triangle opposite side S also equals the radius of the can  200 . As noted hereinabove, the effective height of the double-folded flap  6  is approximately 0.125 inches for a paperboard that is 0.020 inches thick. When the radius of a can is 1.25 inches, the dimension for the triangle opposite side S is computed by the Pythagorean theorem to be approximately 0.55 inches. Subtracting this value from radius value 1.25 inches provides an approximate dimension of 0.70 inches for the length from the seam  81  to the fold line  69 . The amount subtracted from the radius can also be expressed as the square root of the following: the diameter of the can times the effective height of the folded flap minus the square of the effective height of the folded flap. In practice, the paperboard material and the clearance of cans inside a carton can provide reason to increase or decrease this dimension. 
     In the embodiment shown, the double-folded flap  6  is sufficiently long so that it holds the can  200  at a position completely within the carton  100 . When the can  200  is fully within the carton  100 , the can  210  and the can  220  are stacked in vertical alignment above the can  200  and the mass of the cans  210 ,  220  is nearly balanced. 
     Therefore, there is little or no force upon the can  200  biasing it toward the dispenser opening. This is a fourth means by which the present invention prevents inadvertent ejection of cans. 
     By comparison,  FIG. 2F  illustrates a double folded flap  6  that is shorter than the embodiment described hereinabove. Because the double folded flap  6  is shorter, the can  200  rolls partially out of the carton  100  until it contacts the fold line  69 . In this position, the can  210  and the can  220  are stacked above and behind the can  200 . The weight of the cans  210 ,  220  is off the vertical centerline of the can  200  and the cans  210 ,  220  are therefore, no longer balanced on the can  200 . This results in some forces upon the can  200  biasing it toward the dispenser opening. 
       FIG. 3A  illustrates another embodiment of the present invention. The front lower flap  6  has a flap lower half  60  abutting a flap upper half  65  along a fold line  69 . A cut  68  through front lower flap  6  outlines a fold line locking tab  62 . When the flap upper half  65  is folded inward and downward onto the inner surface of the flap lower half  60 , edge locking tabs  66  are inserted into slots  67  located on seam  81  to assist holding it in the folded position, as illustrated in  FIGS. 3B and 3C . 
       FIG. 3D  illustrates the flap lower half  60  after it is folded inward and downward onto the lower panel  8 . The fold line locking tab  62  is inserted through a lower panel slot  87  in the lower panel  8  to assist holding the folded flap in position abutting lower panel  8 . 
       FIG. 4A  illustrates another embodiment of the present invention. The height of the front lower flap  6  is less than the radius of the beverage can  200 . The front lower flap  6  is folded inward toward the lower panel  8  and tucked under the can  200  without being folded in half. In other embodiments of the present invention, the front lower flap  6  can be folded upon itself more than once, or it can be rolled up upon itself into a substantially cylindrical shape. 
       FIG. 4B  illustrates the embodiment of  FIG. 4A  with the fold line locking tab  62  to hold the front lower flap  6  in position against the lower panel  8 . The front lower flap  6  is folded inward and downward and tucked under the can  200  without being folded in half. The height of the front lower flap  6  from the seam  81  to the edge locking tab  62  is less than the radius of the beverage can  200 . 
       FIG. 5A  illustrates another embodiment of the present invention with the tear outs removed. A flap upper half  65  has an edge locking tab  62  and adjoins a flap lower half  60  along a fold line  69 . 
       FIG. 5B  illustrates the embodiment of  FIG. 5A  with the edge locking tab  62  inserted through the lower panel  8  at a lower panel slot  87 . The flap upper half  65  in combination with the flap lower half  60  produce a tent-like profile similar to a wheel chock to prevent the can  200  from inadvertent ejection from the carton  100 . The dimensions of the flap upper half  65 , the flap lower half  60 , and the location of the slot  87  are chosen so that the can  200  is held completely within the carton  100 . Therefore, the carton  100  and the dispenser take up no more room in a refrigerator than an unopened carton. In addition, the cans are balanced in vertical alignment, and therefore, further prevent inadvertent ejection. In practice, the flap upper half  65  can be biased into a concave surface by the pressure of the cylindrical surface  201  of the can  200 . Also in practice, the flap lower half  60  can be biased into a convex surface by the pressure of the can  200 . The upper and lower sections of flap  6  have been described as flap upper half and flap lower half for ease of visualization but they do not have to be equal in their dimensions. 
     The diagrams illustrate various embodiments of the present invention. There is a long recognized need to prevent cans from inadvertently falling through the dispensing opening of common beverage cartons. The prior art shows a number of attempts to solve this problem and overcome the long recognized need. The present invention discloses a new and effective solution to this well known problem. The present invention accomplishes this without requiring an increase in cost of the carton or of the packaging process. Furthermore, the present invention does not require changes in the design or procedures of the many separate expensive industrial machines that create the carton blanks, assemble the cartons, fill the cartons and transport the filled cartons. 
     This invention is clearly new and useful. Moreover, it was not obvious to those of ordinary skill in this art at the time it was made. 
     It will thus be seen that the objects set forth above, and those made apparent from the foregoing description, are efficiently attended. Since certain changes may be made in the foregoing construction without departing from the scope of the invention, it is intended that all matters contained in the foregoing construction or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense. 
     It is also understood that the following claims are intended to cover all of the generic and specific features of the invention herein described, and all statements of the scope of the invention which, as a matter of language, might be said to fall there between.