US3175750A

US3175750A - Carton with handle and pouring spout

Info

Publication number: US3175750A
Application number: US346180A
Authority: US
Inventors: Edward L Bump
Original assignee: IND RES AND DEV CORP
Current assignee: IND RES AND DEV CORP; INDUSTRIAL RESEARCH AND DEVELOPMENT CORP
Priority date: 1964-02-20
Filing date: 1964-02-20
Publication date: 1965-03-30
Anticipated expiration: 1982-03-30

Description

March 30, 1965 E. BUMP CARTON WITH HANDLE AND POURING SPOUT 3 Sheets-Sheet 1 Filed Feb. 20, 1964 n la R P m M m U v B m L D m W D E hm a mm on a 9% Q ATTORNEY March 30, 1965 E. L. BUMP 3,175,750

CARTON WITH HANDLE AND POURING SPOUT Filed Feb. 20, 1964 3 Sheets-Sheet 2 INVENTOR. EDWARD L. BUMP ATTORNEY March 30, 1965 E. L. BUMP CARTON WITH HANDLE AND POURING SPOUT 3 Sheets-Sheet 3 Filed Feb. 26; 1964 INVENTOR. EDWARD L.BUMP

ATTORNEY 3,175,750 IARTON WHH HANDLE AND POURENG SPOUT Edward L. Bump, Madison, Wis, msignor to Industrial Research and Development Corp, Madison, Wis., a corporation of Wisconsin Filled Feb. 25), 1964, Ser. No. 346,189 14 Claims. (til. 229-47) My invention relates in general to cartons made from blanks of sheet material, and more particularly to cartons for liquids and other flowable' materials which have handles for carrying and pouring, and pour spouts.

The use of cartons made from coated paper products as containers and dispensers has become widespread in recent years, especially, but not exclusively, in connection with various liquid dairy products. However, in spite of their widespread acceptance, such caitons as have eX- isted prior to my present invention have all been subject to one or more disadvantages. Specifically, such disadvantages include lack of a carrying and pouring handle, top construction which is difiicult to open and close, pouring spouts which do not efiectively limit the flow of liquid from the carton, complex construction which is diiiicult and expensive to construct and/or which requires excessive material, and other related shortcomings.

Accordingly, it is a primary object of my invention to provide a single-piece carton which has a spout that discharges the contents of the carton in an easily controlled, smooth fiow.

It is a further object of my invention to provide such a carton which has a handle that may be used both for carrying the carton and pouring its contents.

It is a still further object of my invention to provide a carton having a handle and a limiting pouring spout which is easily and inexpensively manufactured and constructed from a minimum of sheeting material.

It is another object of my invention to provide such a carton which has an improved bottom construction that efiiciently closes the bottom of the carton.

It is an additional object of my invention to provide such a carton which may be constructed from a variety of sheet materials. 7

Other objects and advantages of my invention will be apparent from the following description, taken in conjunction with the accompanying drawings, wherein a pre ferred embodiment of the principles of my invention has been selected for exemplification.

In the drawings: 7

FIG. 1 is a plan view of a blank of sheeting material from which my novel carton is made.

FIG. 2 is a perspective view of my carton as it is originally sealed.

FIG. 3 is a perspective view of my carton when .it is unsealed and the spout is closed.

FIG. 4 is a perspective view of my carton with the spout open for pouring.

FIG. 5 is a perspective view of the bottom of my carton with its bottom flaps partially folded to the position in which they close the bottom of the carton.

FIG. 6 is a perspective view of my carton in a partially assembled condition.

FIG. 7 is a top view of my carton in a partially sealed condition in which it is easily filled.

Referring more particularly to the drawings, in which like numerals refer to like parts, my novel carton 10 might typically be constructed from plastic coated paper or cardboard for use as a container for milk or some other pourable liquid or dry material. Preferably made from a single piece of material, the carton it) has four

walls

11, 12, 13 and 14, a pour spout 15 located at the corner defined by the walls 11 and 14, and a handle 16 sing-1n Patented Mar. 30, 1965 usable both for carrying and pouring. The handle 16 extends diagonally from the corner defined by the

walls

12 and 13 toward the corner forming the pour spout 15. The carton 10 may have either a square or rectangular cross-section. For illustrative purposes only, a carton with a square cross-section is shown in the drawings.

A blank 17 from which the carton 10 may be made is shown in FIG. 1. The blank 17 has a top section 18, a wall section 19 and a bottom section 20. A lateral crease 21 separates the top section 18 and the wall section 19, a lateral crease 22 separates the wall section 19 and the bottom section 20. The

lateral creases

21 and 22 are substantially parallel and run the entire width of the blank 17.

Four

wall creases

23, 24, 25 and 26 divide the wall section 19 into an attachment flap 27a and the four

walls

11, 12, 13 and 14. The wall creases 23, 24, 25 and 26 are substantially parallel, and are substantially perpen dicular to the

lateral creases

21 and 22. The middle wall crease 25 and the outer left wall crease 23 run the entire height of the blank 17, while the inner left Wall crease 24 and the right wall crease 26 run from the bottom of the blank 17 to the lateral crease 21. A top crease 27 slightly inclined toward the outer left wall crease 23 runs from approximately the intersection of the inner left wall crease 24 and the lateral crease 21 to the top of the blank 17. A similar top crease 28 slightly inclined toward the right edge 29 of the blank 17 runs from approximately the intersection of the lateral crease 21 and the right wall crease 26 to the top of the blank 17. The middle wall crease 25, the left outer wall crease 23 and the

top creases

27 and 28 divide the top section 18 into four

top panels

30, 31, 32 and 33. The wall creases 23, 24, 25 and 26 divide the bottom section 20 into

bottom flaps

34, 35, 36 and 37.

The top panels and 33, which are substantially mirror images of each other, are positioned adjacent to each other when the carton 10 is assembled. The top panel 30 has a triangular section 38 and a handle flap 39. The top panel 33 has a corresponding triangular section and a corresponding handle flap 41.

Both

triangular sections

38 and 40 are approximately the'same shape. One leg of the triangular section 38 is formed by the lateral crease 21, the second leg is formed by the top crease 27, and the third leg is formed by a crease 42 which separates the triangular section 38 and the handle flap 39. One leg of the triangular section 40 is also formed by the lateral crease 21, the second leg is formed by the top crease 28;, and the third leg is formed by a crease 42 which separates the triangular section 40 and the handle flap 41.

The

handle flaps

39 and 41 have corresponding finger openings 44. Finger tabs and 46 preferably project into thefinger openings 44 to make gripping of the

handle flaps

39 and 41 easier. The

finger tabs

45 and 46 are toldable along

creases

47 and 48 to provide a support surface for the fingers. Two

creases

49 and 56 extend from a common point on the crease 42 in the handle flap 39 slightly to the rear of the finger opening 44. Corresponding

creases

51 and 52 extend from a common point on the crease 42 in the handle flap 41 slightly to the rear of the finger opening 44. These

creases

49, 50, 51 and 52 facilitate the filling of my novel carton 10, as will be described more fully as the description progresses.

Like the

top panels

30 and 33, the

top panels

31 and 32 are adjacent each other in the assembled carton 10 and are substantially mirror images of each other. The top panel 31 is divided by

inclined creases

53, 54 and 55 into four generally wedge-

shaped sections

56, 57, 58 and 59 which lie side by side like sectors of a circle. Similarly, the top panel 32 is divided by

inclined creases

60, 61

and 62 into four corresponding wedge-

shaped sections

63, 64, 65 and '66. The

inclined creases

53, 54 and 55 extend from the intersection of the wall crease 24 and the lateral crease 21 to the top of the blank 17, while the

inclined creases

60, 61 and 62 extend from the intersection of the wall crease 26 and the lateral crease 21 to the top of the blank 17.

Spout sections

59a and 66a project, respectively, from the corresponding wedge-

shaped sections

59 and 66 to form the spout 15 for my improved carton 16. The

spout sections

59a and 66a are jointed at the middle Wall crease 25. Each of the wedge-

shaped sections

59 and 66 has a portion of the lateral crease 21 as one of its sides. A protective lip '67 projects from each of the spout sections 59:; and 66a. A perforated line 68 lying substantially parallel to the top of the lip 67 separates the lip 67 from the spout sections and 6601, allowing the lip 67 to be easily detached from them. The spout section 59a is separated from the wedge-shaped section 59 by a spout crease 69:: which runs from the left end 68a of the scored line 68 to the lateral crease 21, crossing the middle wall crease 25 a suitable distance from the crease 21. The spout section 66a is separated from the wedge-shaped section 66 by a corresponding spout crease 6912 which runs from the right end 68b of the scored line 68 to the lateral crease 21, intersecting the spout crease 69:: approximately at the middle wall crease 25.

The corresponding wedge-shaped

folding sections

58 and 65 are located adjacent to the wedge-shaped

sections

59 and 66. In the assembled carton the folding section 58 extends between the triangular section 38 and the wedge-shaped section 59, while the folding section 65 extends between the triangular section 46 and the wedge-shaped section 66. Substantially triangular sealing flaps 70 project from each of the

folding sections

58 and 65. The sealing flaps 70 are separated from the remainder of the

folding sections

58 and 65 by the creases 71. As shown in the drawings, it is preferable that the sealing flaps 70 should not extend to the lateral creases 55 and 62, so that a space 76a is provided between each sealing flap 7t) and the protective lip 67. Such openings 70a facilitate folding of the folding sections 58 and '65 with respect to wedge-shaped

sections

59 and 66 respectively, along

creases

55 and 62. v The remaining wedge-shaped sections are the connecting

sections

56, 57, 63 and 64. The vertex angles of each of the connecting

sections

56, 57, 63 and 64 are substantially equal. Handle engaging tabs 72 project from the blunt end of the connecting

sections

57 and 64. Creases 74 separate the handle engaging tabs 72 from the remainder of the connecting

sections

57 and 64. Creases 74 preferably extend beyond the

creases

54 and 61

separating connecting sections

57 and 58, and 64 and 65, respectively to further separate the handle engaging tabs 72 and the sealing flaps 70, as shown. Small, approximately triangular areas 73, preferably lie between

creases

54 and 74, and between

creases

61 and 74.

Looking at the bottom section of blank 17 in FIG. 1, the

inner flaps

34 and 36 are the first to be folded in assembling the bottom of the carton 10. The outer bottom flaps and 37 are folded over the

inner flaps

34 and 36. The outer flaps 35 and 37 extend from opposite walls of the assembled carton 10, as do the

inner flaps

34 and 36.

The outer flaps 35 and 37 are approximately rectangular, and are sufliciently large to cover and seal the bottom of the carton 10. Preferably, the

outer corners

87 and 88 of the outer flap are beveled. The inner flap 34 has a pair of substantially congruent

triangular portions

75 and 76. The preferably identical inner flap 36 has a pair of corresponding

triangular portions

77 and 78.

The triangular portion 75 is outlined by the wall crease 23, a folding crease 79 extending from the intersection of the wall crease 23 and the lateral crease 22, and an edge 33 extending from the bottom end of the wall crease 23 to the point where the triangular portion intersects the folding crease 79. The triangular portion 76 is outlined by the wall crease 24, a folding crease 31 extending from the intersection of the wall crease 24 and the lateral crease 22, and an edge 82 extending from the bottom end of the wall crease 24 to the point where the triangular portion 76 intersects the folding crease 81. The triangular portion 77 is outlined by the wall crease 25, a folding crease 83 extending from the intersection of the wall crease 25 and the lateral crease 22, and an edge 84 extending from the bottom end of the wall crease 25 to the point where the triangular portion 77 intersects the folding crease 83. The triangular portion 78 is outlined by the wall crease 26, a folding crease extending from the intersection of the wall crease 26 and the lateral crease 22, and an edge 86 extending from the bottom end of the wall crease 26 to the point where the triangular portion 73 intersects the folding crease 85.

Preferably the

triangular portions

75, 76, 77 and 78 are isosceles, with

edges

86, 82, 84 and 36 and the edges along the folding creases 79, 81, 83 and 85 being equal. As illustrated, the outer corners of the inner flap 34 adjacent the

edges

86 and 82 are preferably cut away to define a tongue 89. The outer corners of the inner flap 36 are similarly cut away to define a tongue 90. The tongues 89 and 96 are sufiiciently large to overlap and be secured to each other in the assembled carton 16.

Assembly The first step in the assembly of my carton Iii is to cut and crease a blank 17 of sheeting material as shown in FIG. 1. Next, the blank 17 is folded in half about the middle wall crease 25 to bring the left outer wall crease 23 and the right edge 29 together. The attachment flap 27a is then secured to the top panel 33, the wall 13 and the bottom flap 37 along the right edge 29, preferably on the inside of the carton 10. If the sheeting material from which the blank 17 is cut is plastic coated paper or all plastic, the flap 27a and all other mating surfaces may be secured by heat sealing. If some other material is used, the flap 27a may be secured with glue or other similar conventional means. The blank 17 is then squared.

The manner in which the bottom flaps close the bottom of the corton 19 is best shown in FIG. 5. Together, the

inner flaps

34 and 36 are folded inward toward each other. The folding occurs at the lateral crease 22, and the folding creases 7), 81, 83 and 85. As the inner flaps and 36 are folded toward each other they pull the

outer flaps

35 and 37 inward toward each other. The inwardly collapsing

triangular portions

81 and 83 and outer flap 35, define an envelope into which the free end of outer flap 37 is adapted to slide. Entry of the outer flap 37 into the envelope is facilitated by the beveled

outer corners

87 and 83 of the outer flap 35. The overlapping portions of the

outer flaps

35 and 37, the overlapping portions of the

inner flaps

34 and 36, and all other required surfaces are then apppropriately sealed as indicated above.

The initial steps in assembling the top of the carton 16 are suggested by FIG. 6. First, the connecting flap 63 is folded about the

inclined creases

28 and 66 over the connecting section 64, thereby matching the top crease 28 and the inclined crease 61. Similarly, the connecting section 56 is folded about the

inclined creases

27 and 53 over the connecting section 57, thereby matching the top crease 27 and the inclined crease 54. Both of these foldings are accomplished substantially simultaneously by folding the

triangular sections

38 and 40 toward each other. The triangular section 33 folds at the top crease 27 and the lateral crease 21; the triangular section 46 folds at the top crease 23 and the lateral crease 21. This folding laps the triangular section 38 over the now matching connecting

sections

56 and 57, and laps the triangular section 40 over the now matching connecting

sections

63 and 64. At this time the connecting section 56 is suitably sealed to connecting section 57 and to the underside of the triangular section 38, and the connecting section 63 is sealed to connecting section 64 and to the underside of the triangular section iii. The handle engaging tabs 72 are then sealed to the inside of the handle flaps 39 and 41 after which the top of the carton 15 appears substantially as shown in FIG. 7.

The carton is most easily filled in the partially sealed condition illustrated in FIG. 7. A substantial opening to the carton 10 is exposed by spreading apart the handle flaps 39 and 11. The spreading is made easy by the

creases

49, 50, 51 and 52. Those creases are located at the rear of the handle flaps 39 and 41, just above where the top attachment flap 27a is attached to the inner surface of flap 41. When spread apart, the handle flaps 39 and 41 fold outward at the

creases

55 and 52, and upward again at

creases

49 and 51. The opening at the spout and between the spread handle flaps 3? and 41 is sufficiently large to permit rapid filling'of the carton 15.

After the carton 10 has been filled, sealing of the top of the corton 11) is completed. The handle flaps 3? and 41 are first-'pressedagainst each other to match the

flaps

39 and 41 and thet handle engaging tabs 72. The tabs 72 and the matching portions of the handle flaps 39 and 61 are then suitably secured together in the manner indicated above.

The spout 15 and lip 67 are then sealed against the handle 16 in the position shown in FIG. 2 as follows: The

folding sections

58 and 65 are folded about the

inclined creases

55 and 62 and against the inner surface of the widge-shaped

sections

59 and 66, respectively. The position of the carton 19 after such folding is Substantially as shown in FIG. 3, except that the lip 67 is still attached to the spout 15, rather than the handle flaps 39 and 41, as shown. The

folding sections

58 and 65 are of such size, and the handle flaps 39 and 41 are of such length along the

creases

42 and 43 that the lower front corner 91 of the handle 16 presses the sealing flaps 70 against the spout 15 at approximately the intersection of the spout creases 65a and 6912. Thus, the

triangular sections

38 and 40 are not parallel to the bottom of the sealed carton 15, but are inclined slightly upward from lateral crease 21 to the intersection of spout creases 69a and 65b. The spout 15 and the sealing flaps 70, which are folded and sealed against the inner surface of the spout 15 are now folded against and sealed to the handle 16 in the position shown in FIG. 2. The folding occurs along the spout creases an and 69b, and the

creases

71, 54 and 61 and 21. The protective lip 67 detachably secured to the spout 15 is also sealed to the handle 16 as shown. If the carton 15 is properly sealed as described above, the seal will be hermetic.

The important function of the

folding sections

58 and 65 in opening and closing the spout 15 may now be more fully described. The inclined creases 54 and 61 bordering the

folding sections

58 and 65 are respectively pivotally secured to the

inclined creases

27 and 28 bordering the

trianguler sections

38 and 40.

Inclined creases

55 and 62 likewise pivotally join the

folding sections

58 and 65 to the wedge-shaped

sections

59 and 66, respectively. Thus,

folding sections

58 and 65 in effect pivotally link the

triangular sections

38 and 40 to the wedge-shaped

sections

59 and 66.

When the handle 16 is in its lower position shown in FIGS. 2 and 3, the inner surfaces of the

folding sections

58 and 65 are folded against the inner surfaces of the wedge-shaped

sections

59 and 66, and the spout 15 is closed. When the handle 16 is raised to its upper position, shown in FIG. 4, the

folding sections

58 and 65 are eX- tended upwardly from the wedge shaped

sections

59 and 66, thereby supporting the

triangular sections

38 and 40 in an inclined position, and opening the spout 15. When the handle 16 and

folding sections

53 and 65 are moved 5 back and forth between their upper and lower positions, folding occurs at the lateral crease 21, the

creases

42 and 43, and the

inclined creases

54, 55, 61 and 62.

Use of my carton 10 is convenient and simple. The seal holding the spout 15 against the handle 16 is first broken. This is easily done by inserting the thumbs under the downwardly facing

folding sections

58 and 65 and applying an upward pressure. As the

folding sections

58 and 65 are moved upward by the pressure of the thumbs, the spout 15 and the sealing flaps sealed thereto are pulled away from the handle 16 to the position of P16. 3. As the spout 15 is pulled away from the handle 16, it detaches itself from the protective lip 67 along the perforated line 68, leaving the lip 67 secured to the handle 16. To insure that the lip 67 does remain on the handle 16, the seal between the lip 67 and the handle 16 must be stronger than the perforated connection be tween the lip 67 and the spout 15. The protective lip 67 insures a sanitary spout by protecting the pouring lip of the spout 15 from dirt or other contamination prior to use.

Once the spout 15 is unsealed, the person pulls the handle 16 upwardly to its upward position thereby pulling the sealing flaps 76 away from the inside surfaces. of the spout 15 and opening the spout 15 for pouring, as shown in FIG. 4. After pouring the desired arnount, the person pushes down on the handle 16 to place the spout 15 in the closed position of FIG. 3. In that position the carton 10 will be closed and its contents protected.

The advantages of my novel carton 10 are now quite obvious. Its diagonal handle 16 may be used bothfor carrying and pouring. The corner-pour spout 15 is carefully designed to have an opening of limited size that reduces the possibility of spilling or over-pouring. Furthermore, its design utilizes the normal corner construction of the carton as an aid in pouring, thus eliminating a need for special spouts to be constructed on the sides of the carton as commonly required with prior carton construction. The design of the blank 17 is such that the blank 17 may be made of sheet plastic or other synthetic sheeting material, as well as coated or uncoated paper and cardboard.

It is understood that my invention is not confined to the particular construction and arrangement of parts illustrated and described, but embraces all such modified forms thereof as come within the scope of the following claims.

I claim:

1. A carton for fiowable materials comprising:

(a) a bottom,

(5) a first, a second, a third and a fourth wall, said first and fourth walls being substantially parallel, and said second and third walls being substantially parallel,

(c) first and second wedge-shaped sections projecting upwardly from said first and second walls, respectively,

(a') a pair of spout sections projecting from said wedge-shaped sections and being joined to define a spout extending from the corner of said carton formed by said first and second walls,

(2) a first folding section pivotally connected to said first wedge-shaped section and a second folding se tion pivotally connected to said second wedgeshaped section,

(7'') a first triangular section pivotally connected to the top of said third wall and to said first folding sec tion, and a second triangular section pivotally connected to the top of said fourth wall and to said second folding section, said first and second triangular sections having mating diagonal edges,

(g) corresponding handle flaps projecting from said diagonal edges of said triangular sections, said handle flaps being secured to each other to form a handle for said carton,

(it) said handle and said triangular sections having an upper position wherein said folding sections extend upwardly from said wedge-shaped sections to open said spout and a lower position wherein said triangular sections cover the top of said carton and said folding sections are folded downwardly against said wedge-shaped sections to substantially close said spout.

2. The invention described in claim 1 wherein a sealing means projects from each of said folding sections, said sealing means being adapted to limit the opening of the spout when the handle is in its upper position, and to press against the spout sections to substantially seal said spout when said handle is in its lower position.

3. The invention described in claim 2 wherein the handle and the triangular sections extend substantially to the spout when in their lower position to force the folding: sections and the sealing means against the wedge-shaped sections and spout sections and close said spout.

4. The invention described in claim 2 wherein a protective lip: is detachably secured to the top edge of the spout, and wherein the carton is in its originally sealed condition, the handle and the triangular section being in their lower position, and the spout, the sealing means and the protective lip being secured to said handle in substantially fluid-tight relation.

5. The invention described in claim 4 wherein the sealing means is additionally secured to the spout in substantially fluid-tight relation.

6. The invention described in claim 4 wherein the wedge-shaped sections and the folding sections are pivoted toward the handle where the spout and the sealing means are secured to said handle, and wherein the sealed carton can be opened by lifting upwardly on the downwardly facing folding sections to separate the spout and the sealing means from the handle and detach the spout from the protective lip, and lifting the handle and attached triangular sections to their upper positions to separate the sealing means from the spout.

7. A carton for tlowable materials comprising:

(a) a bottom section,

(b) a first wall, a second wall, a third wall and a fourth wall, said first and fourth walls and said second and third walls being parallel,

(c) a first triangular section pivotally connected to the top of said third wall and a second triangular section pivotally connected to the top of said fourth wall, said triangular sections having mating diagonal edges extending from the corner of the carton formed by said third and fourth walls substantially to the corner of the carton formed by said first and second walls,

(d) corresponding handle flaps projecting from said triangular section diagonal edges and being secured to each other to form a diagonal handle for said carton,

(e) first and second wedge-shaped sections projecting from said first and second walls, respectively,

(1) a pair of spout sections projecting from said wedgeshaped sections and being joined to define a spout extending from said corner of said carton formed by said first and second walls,

(g) a first folding section pivotally connected to said first wedge-shaped section and to said first triangular section,

(h) a second folding section pivotally connected to said second wedge-shaped section and to said second triangular section,

(i) sealing means projecting from each of said folding sections,

(j) said folding sections being folded against said wedge-shaped sections and said sealing means being sealed to said spout in fluid-tight relation to close said spout,

(k) said wedge-shaped sections and said folding sections being folded toward said handle and said spout said sealing means being sealed to said handle in fluid-tight relation to close said carton,

(I) said carton being adapted to be unsealed by lifting upwardly on said folding sections to pivot said wedge-shaped sections and said folding sections outwardly from said handle and break the seal between said handle and said spout and sealing means, and by lifting upwardly on said handle and attached triangular sections to pivot said folding sections upwardly from said spout sections and break the seal between said sealing means and said spout to open said spout,

(m) said handle, said triangular sections, said folding sections and said sealing means being movable when said carton is unsealed between an upper position wherein said spout is open and a lower position wherein said sealing means are pressed against said spout to susbtantially close said spout.

8. The invention described in claim 7 wherein a protective lip is detachably secured to the top edge of said spout, said protective lip being sealed to said handle and being adapted to be detached from said spout and remain sealed to said handle when said carton is unsealed.

9. The invention described in claim 7 wherein the carton has creases between said Wedge-shaped sections and said walls, between said triangular sections and said walls, between said wedge-shaped sections and said folding sections, between said folding sections and said sealing means, and across said spout to facilitate folding of said carton in its sealed and unsealed positions.

10. The invention described in claim 7 wherein:

(a) each pair of adjacent folding sections and triangular sections are connected in pivotable relation by means of first and second connecting sections,

(b) each of said first connecting sections having a side secured to a side of one of said triangular sections,

(0) each of said second connecting sections having a side secured to a side of one of said folding sections,

(d) said first and second connecting sections being folded and secured together to connect said triangul ar sections and said folding sections in abutting relation.

11. The carton of claim 7 wherein said bottom comprises:

(a) a first, substantially rectangular, outer fiap pivotalllly projecting from the bottom of said second wa (b) a second, substantially rectangular, outer flap pivvotally projecting from the bottom of said third wall,

(0) a first inner flap pivotally projecting from the bottom of said first wall and having its side edges pivotally attached to said first and second outer flaps,

(d) a second inner flap pivotally projecting from the bottom of said fourth wall and having its side edges pivotally attached to said first and second outer flaps,

(e) each of said inner flaps having a pair of triangular portions, each of said triangular portions being defined by a side edge of the inner flap, a crease running from the inner end of the side edge, and a notch running from the outer end of the side edge,

(f) said first and second outer flaps being sealed to each other in overlapping relation.

12. The invention described in claim 11 wherein said second outer flap projects into the envelope formed by said first outer fiap and the triangular portions pivotally attached thereto.

13. A single-piece blank for a four-walled carton, said blank comprising:

(a) a top section, a bottom section and a wall section,

(b) a first crease dividing said top section from said wall section, and a second crease dividing said wall section from said bottom section and being substan- 9 tially parallel to said first crease, said first and second creases extending for the full length of said blank,

() a left Wall crease, a middle wall crease and a right Wall crease dividing said wall section into four Walls, said Wall creases being substantially perpendicular to said first crease and extending for the full height of said blank.

(d) said three wall creases dividing said bottom section into a first, a second, a third and a fourth bottom flap adapted to form the bottom of the carton, and dividing said top section into a first, a second, a third and a fourth top panel adapted to form the top of the carton, said first and second top panels and said third and fourth top panels to be adjacent in the completed carton,

(2) said third and fourth top panels having corresponding triangular sections and handle flaps,

(f) each of said triangular sections having one side formed by said first crease, a second side formed by a wall crease, and a diagonal side,

(g) a pair of corresponding handle flaps extending from said diagonal sides in pivotable relation and being adapted to be secured together to form a handle for the completed cart-on,

(h) said first and second top panels each being divided by three inclined creases into corresponding first, second, third and fourth wedge-shaped sections, each of said first Wedge-shaped sections having one side formed by a wall crease forming one side of a triangular section, and each of said fourth wedgeshaped sections having one side formed by a part of said first crease,

(i) spout sections projecting from said fourth wedgeshaped sections of said first and second top panels and being secured together along the middle wall crease separating said first and second Walls to define a spout for the completed carton,

(i) said third wedge-shaped sections being folding sections adapted to movable link said fourth wedgeshaped sections and said triangular sections,

(k) said first and second wedge-shaped sections being connecting sections adapted to be folded together and to be secured to said triangular sections to connect said third wedge-shaped sections and said triangular sections in abutting relation,

(1) a handle engaging tab pivotally secured to each of li said second wedge-shaped sections and being adapted to be secured to said handle flaps,

(m) a sealing flap pivotally secured to each of said third wedge-shaped sections and bein adapted to be secured to said adjacent spout sections and said handlle flaps,

(n) a protective lip detachably secured to said spout sections and adapted to be secured to said handle flaps,

(0) said spout sections and said sealing flaps being adapted to define a spout opening for said completed carton.

14. The blank of claim 13 wherein:

(a) said second and third bottom flaps are to be opposite each other in the carton, and said first and fourth bottom flaps are to be opposite each other in the carton,

(b) said second and third bottom flaps being substan tially rectangular, outer flaps adapted to overlap each other to substantially cover the bottom of the carton,

(c) said first and fourth bottom flaps being inner flaps, said first bottom flap having said middle and said left wall creases as side edges, and said fourth bottom flap having said left Wall crease and the left side of said blank as said edges,

(a!) said first and fourth bottom flaps each having a References Cited by the Examiner UNITED STATES PATENTS Re. 25,532 3/64 Asman 229-17 2,810,508 10/57 Braunstein 229-17 X 2,900,124 8/59 Leone 229-52 2,916,195 12/59 Gatward 229-52 3,147,904 9/ 64 Larson 229-17 5 FRANKLIN T. GARRETT, Primary Examiner.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,175,750 March 30, 1965 Edward L. Bump It is hereby certified that error appears in the above numbered patent reqiiring correction and that the said Letters Patent should read as correctedbelow.

Column 4, line 46, and column 5, line 23 for "corton",

each occurrence, read carton column 5, line 16, after- "top" insert of the line 25, for "thet" read the same column 5, line 60, for "trianguler" read triangular column 9, line 39, for "movable" read movably column 10, line 6, for "handlle" read handle Signed and sealed this 17th day of August 1965.

(SEAL) Attest:

'ERNEST w. SWIDER EDWARD J. BRENNER AI testing Officer Commissioner of Patents

Claims

1. A CARTON FOR FLOWABLE MATERIALS COMPRISING: (A) A BOTTOM, (B) A FIRST, A SECOND, A THIRD AND A FOURTH WALL, SAID FIRST AND FOURTH WALLS BEING SUBSTANTIALLY PARALLEL, AND SAID SECOND AND THIRD WALLS BEING SUBSTANTIALLY PARALLEL, (C) FIRST AND SECOND WEDGE-SHAPED SECTIONS PROJECTING UPWARDLY FROM SAID FIRST AND SECOND WALLS, RESPECTIVELY, (D) A PAIR OF SPOUT SECTIONS PROJECTING FROM SAID WEDGE-SHAPED SECTIONS AND BEING JOINED TO DEFINE A SPOUT EXTENDING FROM THE CORNER OF SAID CARTON FORMED BY SAID FIRST AND SECOND WALLS, (E) A FIRST FOLDING SECTION PIVOTALLY CONNECTED TO SAID FIRST WEDGE-SHAPED SECTION AND A SECOND FOLDING SECTION PIVOTALLY CONNECTED TO SAID SECOND WEDGESHAPED SECTION, (F) A FIRST TRIANGULAR SECTION PIVOTALLY CONNECTED TO THE TOP OF SAID THIRD WALL AND TO SAID FIRST FOLDING SECTION, AND A SECOND TRIANGULAR SECTION PIVOTALLY CONNECTED TO THE TOP OF SAID FOURTH WALL AND TO SAID SECOND FOLDING SECTON, SAID FIRST AND SECOND TRIANGULAR SECTIONS HAVING MATING DIAGONAL EDGES, (G) CORRESPONDING HANDLE FLAPS PROJECTING FROM SAID DIAGONAL EDGES OF SAID TRIANGULAR SECTIONS, SAID HANDLE FLAPS BEING SECURED TO EACH OTHER TO FORM A HANDLE FOR SAID CARTON, (H) SAID HANDLE AND SAID TRIANGULAR SECTIONS HAVING AN UPPER POSITION WHEREIN SAID FOLDING SECTIONS EXTEND UPWARDLY FROM SAID WEDGE-SHAPED SECTIONS TO OPEN SAID SPOUT AND A LOWER POSITION WHEREIN SAID TRIANGULAR SECTIONS COVER THE TOP OF SAID CARTON AND SAID FOLDING SECTIONS ARE FOLDED DOWNWARDLY AGAINST SAID WEDGE-SHAPED SECTIONS TO SUBSTANTIALLY CLOSE SAID SPOUT.