Patent Publication Number: US-5833112-A

Title: Pouring spout attachment

Description:
This is a continuation of application Ser. No. 08/464,338, filed on Jun. 5, 1995 now abandoned. 
    
    
     TECHNICAL FIELD 
     This invention relates generally to pouring devices for containers and, more particularly, to spout attachments for liquid-carrying cartons. 
     BACKGROUND ART 
     Heretofore, pouring spout attachments have been used on liquid-carrying containers. Such attachments mounted on an outside carton surface are shown and described in U.S. Pat. Nos. 5,088,643; 4,813,578; and 4,964,562. Attachments having flanges secured on inside surfaces and extending out through openings in a container panel include U.S. Pat. Nos. 4,948,015; 4,795,065; and 4,669,640, each of which includes a pull tab. U.S. Pat. Nos. 5,292,025 and 4,600,127 disclose attachments having rotatable members having tapered ends for breaking rupturable, tapered panel segments when rotated and depressed. 
     Push-in tabs for breaking weakened panel zones in order to open containers are disclosed in U.S. Pat. Nos. 5,101,999; 4,934,590; 4,925,034; 4,892,217; 3,938,693; 3,924,777; and 3,871,552. 
     U.S. Pat. No. 4,934,590 discloses a package including a lever having a forward portion and a rearward portion, and a U-shaped lip having oppositely disposed locking arms, wherein the forward portion is pushed downwardly, breaking a frangible connection and pivoting the rearward portion upwardly. Pivoting of the lever is continued until the rearward portion is locked by an interference fit with an edge of the lip and, additionally, pressed below the locking arms to provide a one-way locking means. 
     DISCLOSURE OF THE INVENTION 
     A general object of the invention is to provide an improved pouring device for containers having partial depth cuts or openings formed in an outer surface thereof. 
     Another object of the invention is to provide an improved pouring spout attachment which is applied to the outside of a selected container panel, and includes a push-in opening arrangement operable in conjunction with a provision for retaining the pushed-in segment in its fully open condition. 
     Still another object of the invention is to provide a pouring spout attachment for a container having a U-shaped or C-shaped cut formed partially through a selected panel thereof, and including an integrally molded body with a projection formed on the inner wall thereof and a mounting flange formed on the lower end thereof enclosing a central bottom web having oppositely disposed U-shaped or C-shaped cuts formed therethrough, one of these being substantially aligned with the partial cut in the container panel, a pivot or hinge line formed by the omission of a cut between the oppositely disposed U-shaped or C-shaped cuts, such that by pushing down on the central bottom web segment defined by the one U-shaped or C-shaped cut the underlying partial cut in the container panel is broken, and, in a fulcrum and lever fashion, the pivoting of that segment causes the central bottom web segment defined by the other U-shaped or C-shaped cut to snap past the projection and be retained thereby. 
     A still further object of the invention is to provide a pouring spout attachment body adapted to receiving a screw-on cap, or alternately, a snap-on cap. 
     Still another object of the invention is to provide a pouring spout attachment for a container having an opening formed in a selected panel thereof, and including a body with a shoulder or projection formed on the inner wall thereof and a mounting flange on the lower end thereof, and a cover web on the upper end thereof, partially cut perforations formed between the cover web and the body for approximately two-thirds of the periphery thereof, a hinge line formed laterally across the cover web, an inwardly extending projection formed on the cover web adjacent the hinge line, a shoulder formed on the inner surface of the body defining a retaining pocket with the cover web for retaining the projection upon the latter being snapped past the shoulder when the cover web is pushed inwardly, breaking the perforations. 
     These and other objects and advantages will become more apparent when reference is made to the following drawings and the accompanying description. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a perspective view of a liquid-carrying container embodying the inventive pouring spout attachment; 
     FIG. 2 is a perspective view of the FIG. 1 container having a partial depth cut formed therein prior to having the pouring spout attachment secured thereon; 
     FIG. 3 is an enlarged cross-sectional view taken along the plane of the line 3--3 of FIG. 1, and looking in the direction of the arrows; 
     FIG. 4 is a top view of the FIG. 3 structure, with the end cap removed; 
     FIG. 5 is a bottom view of the FIG. 3 structure taken along the plane of the line 5--5, and looking in the direction of the arrows; 
     FIG. 6 is a view of the FIG. 3 structure illustrating a different operational condition; 
     FIG. 7 is a view similar to FIG. 3, illustrating an alternate embodiment of the body and end cap portions of the invention; 
     FIG. 8 is a perspective view similar to FIG. 1 but of a modified embodiment of the container and the pouring spout attachment; 
     FIG. 9 is a perspective view of the FIG. 8 embodiment of the container showing an opening formed in a top panel thereof; 
     FIG. 10 is an enlarged cross-sectional view taken along the plane of the line 10--10 of FIG. 8, and looking in the direction of the arrows; and 
     FIG. 11 is a top view of the FIG. 10 embodiment. 
    
    
     BEST MODE FOR CARRYING OUT THE INVENTION 
     Referring now to the drawings in greater detail, FIG. 1 illustrates a carton 10 including a pouring spout attachment 12 mounted on an upper panel 14 thereof. Prior to mounting the spout attachment 12 on the panel 14, as shown in FIG. 2, a U-shaped partial depth cut 16 is made on the panel formed in any suitable manner, such as by either a laser or a die. The partial depth cut 16 defines a panel segment 18. 
     The pouring spout attachment 12 is illustrated more specifically in FIGS. 3-5 as including a cylindrical body 20 having a mounting flange 22 formed thereon, secured to the panel 14 surrounding the periphery of the U-shaped cut 16. A shoulder 24 is formed adjacent the flange 22. Threads 26 are formed around the outer surface of the cylindrical body 20. A tang or projection or detent element 28 of a predetermined width is formed on the inner surface of the body 20 at a predetermined height therein. 
     Molded as an integral end wall of the FIGS. 3-5 structure inward of the mounting flange 22 is a web 30 having cuts formed therethrough consisting of parallel sides 32 and 34, with arcuate ends 36 and 38, defining a web or flap or end segment 39. A pivot or hinge line 40 is formed by virtue of oppositely disposed thicker molded segments 42 remaining uncut at a predetermined location along the sides 32 and 34, forming the end wall segment into forward and rearward portions. A rib 44 is formed on the panel segment 39 along the longitudinal center line thereof. The spout attachment 12 is seated on the carton panel 14, with the cut edges 32, 34 and 36 positioned adjacent the U-shaped cut 16. 
     An internally threaded cap 46 is threadedly mounted on the external threads 26, abutting against the shoulder 24. 
     An alternate embodiment is shown in FIG. 7, as including a shorter cylindrical body 48 than the above referenced body 20, with the same mounting flange 22 and adjacent shoulder 24. An annular outwardly protruding annular bead 50 is formed adjacent the upper end of the body 48. A snap cap 52 includes an inwardly extending annular ridge 54 formed a predetermined distance below the top end thereof. The predetermined distance is such that the internal ring 54 is adapted to snap over the external bead 50 of the body 48, to seat the cap 52 on the shoulder 24. 
     A tamper evident full-round strip 56 is formed around either the threaded cap 46 or the snap cap 52, just above the shoulder 24. 
     An optional tab 58 or like means may be formed on a selected edge portion of the mounting flange 22 to facilitate the proper orientation of the cut 32, 34 and 36 directly over the partial depth cut 16 on the container panel 14. 
     In operation, after the carton 10 is filled and sealed in the usual manner, the pouring spout attachment 12 is opened as shown in FIG. 6 as follows: 
     The tamper evident ring 56 is broken. The screw cap 46 is then threadedly removed from the threaded body 20. (In the case of the alternate embodiment, the snap cap 52 is pried off the bead 50 of the body 48.) 
     Thereafter, downward force is applied to the rib 44 at the point P (FIG. 3). Such force causes the web segment 39 to pivot downwardly in a counterclockwise movement about the pivot 40, breaking the remaining thickness beneath the cut 16 of the carton panel 14, around the carton panel segment 18. The counterclockwise movement about the pivot 40 is such that the portion of the web segment 39 defined by the cuts 32, 34 and 38 is pivoted upwardly until the end 38 snaps past the projection 28, to thereby retain the web segment 39 in the fully open position. 
     Any closure thereafter, before the carton&#39;s contents are emptied, is by replacing the screw cap 46 or the snap cap 52, with the enclosed rib 44, web segment 39, and carton panel segment 18 retained in the open condition. 
     Referring now to FIGS. 8-11, a further embodiment of a pouring spout attachment 60 (FIG. 8) for a carton 62 is disclosed. Prior to mounting the spout attachment on an upper panel 64, an opening 66 (FIG. 9) is formed in the panel. 
     The pouring spout attachment 60, as more clearly shown in FIG. 10, includes a cylindrical body 68 having an outer mounting flange 70 formed thereon, secured to the panel 64 surrounding the periphery of the opening 66. A cover web or inner body in the form of a flap 72 is integrally formed on the upper end of the cylindrical body 68. 
     Partial death cuts 74 (FIG. 11) form a common edge between the cover web 72 and the body 68 for approximately two-thirds of the periphery thereof. A score line or stepped ed e forms a flexible hinge 76 (FIG. 11) laterally across the cover web 72 between the ends of the perforations 74. 
     A downwardly ex ending projection 78 (FIG. 10) is formed on the inn surface of the cover web 72 on the perforation side f the flexible hinge 76. A second projection or shoulder 80 forms a detent and defines a retaining pocket 82 on the inner surface of the cylindrical body 68 directly opposite the center of the perforations 74. 
     In operation, the pouring spout attachment 60 is opened by manually pressing down on the cover web 72 at the center of the perforations 74, as shown by the arrow F in FIG. 10. Once the major portion of the cover web 72 reaches a substantially vertical attitude, as shown in phantom in FIG. 10, the projection 78 will have snapped past the shoulder 80 to become confined in the retaining pocket 82 and, thus, retaining the flap 72/78 in an open condition. 
     Industrial Applicability 
     It should be a parent that the invention provides an improved pouring spout attachment for a liquid-carrying container which may be readily forced inwardly while automatically providing an interference engagement of two components which retain the spout in an open condition. 
     It should be further apparent that the flap which provides a fulcrum and lever or seesaw effect of opening at one inwardly forced end and causing an interference connection at the other outwardly projecting end may have it outer surface formed on the same plane as that of the external mounting flange. 
     It should be still further apparent that the pouring spout attachment of the present invention is substantially simpler and more compact than prior art arrangements, such as U.S. Pat. No. 4,934,590 referred to above. 
     While but one primary embodiment of the invention, and two secondary embodiments have been shown and described, other modifications thereof are possible within the scope of the following claims.