US3115292A - Multi-wall bulk pak shipping container - Google Patents

Multi-wall bulk pak shipping container Download PDF

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US3115292A
US3115292A US16811562A US3115292A US 3115292 A US3115292 A US 3115292A US 16811562 A US16811562 A US 16811562A US 3115292 A US3115292 A US 3115292A
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sleeve
edges
flaps
closure
container
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Edward F Repking
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James River Corp of Nevada
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James River Corp of Nevada
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/02Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body
    • B65D5/12Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body with end closures formed separately from tubular body
    • B65D5/14Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body with end closures formed separately from tubular body with inset end closures

Description

Dec. 24, 1963 E. F. REPKING 3,115,292

MULTI-WALL BULK PAK SHIPPING CONTAINER Original Filed Sept. 15, 1958' 4 Sheets-Sheet 1 07/54 70? EDW/MJ r7 K /mm p172 zwsr Dec. 24, 1963 E. F. REPKING 3,115,292

MULTI-WALL BULK PAK SHIPPING CONTAINER Original Filed Sept. 15, 1958 4 Sheets-Sheet 2 Dec. 24, 1963 F. REPKING MUL'II-WALL BULK PAK SHIPPING CONTAINER Original Filed Sept. 15, 1958 4 Sheets-Sheet 3 Dec. 24, 1963 4 Sheets-Sheet 4 FIGJE) United States Patent ()fitice 3,115,292 Patented Dec. 24, 1963 3,115,292 MULTi-WALL BULK PAK SHIPPING CDNTER Edward F. Replring, Glasgow, Mm, assignor to Crown Zclierbaeh Corporation, an Francisco, Calif., a corporation of Nevada Original application Sept. 15, 1958, Ser. No. 761,263 now Patent No. 3,041,942, dated July 3, 1962. Divided and this application Jan. 23, 1962, er. No. 163,115

Qlaims. (Cl. 229-45) This application is a division of co-pending application Serial No. 761,263, filed September 15, 1958, now Patent No. 3,041,942 granted July 3, 196-2, which application contained subject matter common to the application Serial No. 682,027, filed September 4, 1957, now abandoned.

The invention relates to an improvement in multi-wall containers such as, for example, large drum-like containers constructed of paperboard or other suitable bendable material, for packaging bulk commodities which is simple in construction, economical in material, particularly easy to assemble, has means located wholly within the container for automatically and permanently locking the cover members in place, requiring no special tools or other extrinsic devices for application, the container providing a substantial improvement in compressive and other strength properties.

The means for permanently locking the top and bottom closures to the body member of the container comprises the joint cooperation of three essentials of the container namely, (1) inwardly folded flaps integral with the top and bottom edges of the outer sleeve, (2) reversely folded looking flaps fixed to the outer face of flanges hinged to side edges of the top and bottom closure panels, in the folded position conforming to the contour of the inner face of the outer sleeve, positioned between the top and bottom end margins of the body member sleeves and (3) the length of the inner sleeve fixed to correspond to the critical distance between the inner faces of the end closure panels when they are separated by the maximum distance that just effects automatic end to end abutting engagement of the outer sleeve fiaps (1 above) with the locking flaps (2 above) of the cover flanges, whereby the end edges (3 above) of the inner sleeve abut the inner faces of the cover panels and maintain the cover members permanently locked in fixed relation to the body member sleeves.

The distance between the free end edges of the top and bottom closure flange locking flaps and the fold at the end edges of the outer sleeve is very slightly greater than the length of the outer sleeve inturned flaps to permit the said free end edges of the closure flange looking flaps to snap into abutment with the free end edges of the outer sleeve flaps with the inner faces of the closure panels abutting the end edges of the inner sleeve.

The containers may be square, hexagonal, octagonal, etc. in shape. The hexagonal form is generally preferred.

Typical dimensions of the drums for packaging 200 to 400 pounds of material are: 30 gal. capacity, 17 inches between opposed wall panels commonly denoted as 17 x 17", 28 inches in height; 60 gal. capacity, x 20 inches, 41 inches in height, etc.

The container of the invention embodies many practical advantages, it may be assembled easily and rapidly :by a sing-1e operator without the use of tools or other extrinsic devices. The entire exterior surface of the container is free from all outward projections, thereby conserving storage space and providing maximum printing area. It has a high top load rating as well as other desirable strength properties, strapping is not required, the seal between the covers and sleeves is sift proof. The construction is pilfer proof since access to the interior is unobtainable without obvious mutilation of the container, The saving in cost of the drum over presently available drums of comparable quality, reliability and function is substantial. The outward thrust of flowable bulk contents such as materials in powder, granular or pellet form and other materials tend to hold the locking means even more securely together.

An object of the invention is to provide a container having a body member of telescoped inner and outer open ended sleeves with closure members permanently locked to the body member by means located entirely within the container.

Another object of the invention is to provide generally a sift proof, pilfer proof multi-panel container comprising inner and outer telescoped sleeves with cover panels conforming in contour to a horizontal cross section through the inner faces of the outer sleeve. The cover panels are permanently locked to the outer sleeve with their outer faces in substantially the plane of the folds at the ends of the outer sleeve by automatic locking engagement of flaps located between the top and bottom margins of the sleeves, with the inner faces of the cover pane-ls in abutment with the respective top and bottom edges of the inner sleeves.

Still another object is to provide a container having a body of open ended telescoped sleeves with closure members immobilized in permanently fixed locked relation to each other and to said sleeves by the joint combination of (l) inwardly folded flaps hinged to the top and bottom ends of the outer sleeve, (2) reversely folded locking flaps fixed to the outer face of inwardly folded flanges hinged to the side edges of the closure panels and (3) the length of the inner sleeve fixed to correspond to the critical distance between the inner faces of the closure panels when they are separated by the maximum distance that just permits automatic end to end abutment of the said outer sleeve fiaps with the said cover panel flange locking flaps, whereby the end edges of the inner sleeve abut the inner faces of the cover panels and maintain the closure members permanently locked in fixed relation to the body member.

Another object is to provide a method for assembling the blanks for forming a container body member having telescoped inner and outer open ended sleeves and closure members permanently secured to the body member. The method comprises assembling the bottom closure member and telescoping the outer sleeve thereover, collapsing the inner sleeve inwardly and inserting it within the outer sleeve until its bottom edges are in abutment with the inner face of the bottom closure panel. Then restoring the inner sleeve to its normal polygonal shape and inserting the top closure member flanges and locking flaps between the inner and outer sleeves until said locking flaps snap into end to end abutment, with the inner faces of the closure panels in abutment with the end edges of the inner sleeve.

The invention also consists in the parts, arrangement and combination of parts hereinafter described and claimed and the accompanying drawings form a part of this specification and like numerals and symbols therein appearing refer to like parts wherever they occur.

In the drawings:

FIGURE 1 is a plan view of the blanks of the component parts of the container;

FIGURE 2 is a perspective view of the assembled outer sleeve blank A with integral top and bottom end flaps turned inwardly;

FIGURE 3 is perspective view of the inner and outer telescoped sleeves with a bottom pad in place;

FIGURE 4 is a perspective view of the assembled inner and outer sleeves with the bottom closure partially inserted within end margins of the sleeves, with reinforcing pads in place and a portion cut away to illustrate the relation of parts and with the assembled top closure preparatory to insertion within the end margins of the containers sleeves;

FIGURE 5 is a perspective view of the fully assembled container;

FIGURE 6 is a vertical section of the assembled container with an end closure member in process of insertion between the sleeves with pad in place;

FIGURE 7 is an enlarged vertical sectional view taken in the direction of arrows 77 of FIGURE 5 illustrating the relation of parts in an end closure of the completely assembled container;

FIGURE 8 is a plan view of the blank of the outer sleeve of a modified form of the container showing the reinforcing tape and tear tape;

FIGURE 9 is a vertical section of the blank of FIG- URE 8 taken in the direction of the arrows 9;

FIGURE 10 is a vertical section of the blank of FIG- URE 8 taken in the direction of the arrows 10-10;

FIGURE 11 is a perspective view of the partially assembled blank of FIGURE 8;

FIGURE 12 is a horizontal section of FIGURE 11 partially taken through the folded top infolded locking flaps;

FIGURE 13 is a plan view of the blank of one of the closure members of the container;

FIGURE 14 is a perspective view of the fully assembled blank of FIGURE 13;

FIGURE 15 is a perspective view of the assembled outer sleeve and bottom closure blank with a portion broken away to illustrate the position of the bottom closure flanges and flaps;

FIGURE 16 is a perspective view showing the inner sleeve inwardly collapsed prior to insertion within the outer sleeve, the dotted line indicating the normal position of the inner sleeve;

FIGURE 17 is an enlarged fragmentary elevation of the bottom portion of the assembled outer sleeve and bottom closure members with a portion cut away, showing the bottom ends of the collapsed inner sleeve in abutting relation to the end closure panel;

FIGURE 18 is a perspective view of the partially assembled container with the inner sleeve in normal position and the dotted lines indicating the partially collapsed condition which allowed insertion within the outer sleeve;

FIGURE 19 is a section of the container fully loaded and prior to insertion of top closure member, taken in the direction of the arrows 1919 of FIGURE 18;

FIGURE 20 is a vertical section of the container of FIGURE 19 showing the top member in process of insertion into locking position;

FIGURE 21 is a vertical section of an upper corner of the fully assembled container showing a pad inserted between the closure panel and the end of the inner sleeve with a crushed portion of the pad resting on the top edge of the inner sleeve.

In the blank A, FIGURE 1, of the outer sleeve, trans- Verse scores 11 and longitudinal scores 12 define wall panels It and hinge lines of top and bottom flaps 13 and 14 separated at least in part at their side edges by slots 15, said flaps having free end edges 17. A securing flap 16 which is coextensive in length and attached to the outer edges of the outer panel 143 is also defined by score 11.

The blank B for forming the inner sleeve is scored transversely at 21 to define the side walls 26 and securing flap 22, coextensive in length therewith.

The closure blanks C are scored at 26 to define the closure panel with side edges corresponding in number and essentially coextensive in width with the width of the panels of sleeves A and B. This score also defines the hinge lines of flanges 27 which have locking flaps 29 hinged to their outer end edges defined by scores 28, said locking flaps have free end edges 36). Pad D consists of flat sheet 35 corresponding in contour to the panels 25 of the cover members. The use of this pad is optional but may be employed to advantage in packaging relatively large quantities of heavy material. The margins of the pad are normally crushed to facilitate sift proof closures of the container.

FIGURE 2 is a perspective view of the erected outer sleeve A with sealing flap 16 attached to the opposite remote panel 10 by staples, glue or other suitable means. The top and bottom outer sleeve flaps l3 and 14 respectively are folded inwardly adjacent the upper and lower inner margins of the outer sleeve.

The perspective view of FIGURE 3 illustrates the container with a bottom pad 35 inserted in the bottom of the container and the inner sleeve B telescoped within the outer sleeve A and with the outer top and bottom flaps 13 and 14 respectively juxtaposed between the upper and lower margins of the sleeves. The top pad 35 is here shown ready to be inserted over the top edges 23 of the inner sleeve B.

The perspective view of FIGURE 4 shows a further step of the assembly wherein the top pad 35 is inserted within the outer sleeve turned down flaps 13 and resting on the top end edges 23 of the inner sleeve. This figure also shows the bottom closure member C partially in place and the top closure member C fully assembled ready to insert the cover flanges 27 between the outer sleeve flaps 13 and the inner sleeve until the top panel 25 rests on the pad 35 and the free end edges of the flange flaps 29 are snapped into abutting relation with the free end edges 17 of the outer sleeve turned down flaps 13. The completely assembled container is shown in the perspective View, FIGURE 5.

The vertical sectional view of FIGURE 6 shows the flanges 27 and flaps 29 in the process of insertion between the flaps 13 of the outer sleeve 10 and the inner sleeve side walls 20.

The cover member in place is shown in the vertical sectional view of FIGURE 7, the outer face of the panel 25 being in substantially the plane of the top folds 40 of the outer sleeve with its unclerface resting on the top pad and the free end edges 17 of the flaps 13 abutting free end edges 30 of the reversely folded flange flaps 29 of the cover member.

The distance between the cover panel 25 and the pad 35 of the sectional view FIGURE 7, is exaggerated to clearly distinguish these members from each other; actually the panel 25 is in flatwise contact with the pad 35, when the pad is employed, or in the absence of the pad it will be in contact with the upper edges 23 of the inner sleeve.

The container may be assembled in any convenient manner. A preferred method is to fold panels 10 of the blank A carrying the securing strip 16 over the other panels and securing the strip 16 to the outer vertical margin of the remote panel 10. The panels 20 of blank B are similarly folded and attached together in the same manner as described for the outer sleeve A.

The outer sleeve A is next opened into tubular form and the top and bottom flaps 13 and 14 respectively folded inwardly as shown in FIGURES 2 and 3, forming the broad top and bottom folds 40. The inner sleeve 13 is then inserted within the outer sleeve A as shown in FIGURE 3, the flaps 13 and 14 being positioned between the upper and lower margins of the telescoped sleeves.

The cover members C may be assembled by folding the locking flaps 29 reversely about the scores 28 into flatwise engagement with the outer face of flanges 27. The flanges are then folded downwardly to approximately the position shown in FIGURE 4.

It should be noted from FIGURE 7 that the distance between the flap fold 40 of the outer sleeve A and the free upturned edges 30 of the locking flaps 29 is slightly greater than the length of the body flaps 13 from the top fold 41) to the downturned free end edges 17 so that the end edges 36 of flaps 29 automatically fall into aligned abutting relation with the downturned free end edges 17 of the outer sleeve flaps 13 when the cover flanges 27 are inserted between the upper margins of the sleeves A and B. At this point the cover panels 25 will be within the upper and lower margins of the outer sleeve inwardly folded flaps 13 and 14 respectively with cover panel 25 inner faces resting on or engaging the upper and lower end edges 23 of the inner sleeve B, or the edges 23 engaging the adjacent marginal portions of the pad 35 and thus precluding further inward movement of the cover panels 25 from substantially the plane of the top and bottom folds 40 of the outer sleeve A.

The length of the cover panel flanges 27 and their reversely folded locking flaps 29 and the length of the outer sleeve flaps 13 may be varied if desired, contingent upon maintaining the hereinbefore described distance relations. For example, in a relatively large container for packing large quantities of a relatively heavy material, it may be desirable to have the outer sleeve flap 13 four inches (4") or more in length with a corresponding adjustment of the length of the cover flanges 27 to meet the aforesaid required distance relation between the locking end edges 17 and 30 of the respective flaps 13 and 29. Conversely, the length of the outer sleeve flaps 13 may be reduced to one and one-half inches 1 /2") for example, for packing smaller quantities of material.

A modified form of the invention is illustrated in FIG- URES 8 to 21 inclusive.

A plan view of the blank which forms the outer sleeve of the modified form is shown at 50, FIGURE 8. The

longitudinal scores 51 and 5:2 define the end edges of the body panels 56 and the hinge lines of the top flaps 57, 58, 59, 60, 61 and 62 and the hinge lines of bottom flaps 65, 66, 67, 68, 69 and 70. The transverse scores 53 define the hinge lines connecting the panels 56 and the glue flap 55. Top flaps 58 and 59 are separated on their side edges by slot 63 and flaps 6t) and 61 by slot 64 while the bottom flaps 66 and 67 are separated by slot 71, and 68 and 69 by slot 72. A portion of the outer liner 76 of the blank is broken away to show the direction of the flutes 73 of the corrugated medium and the position of a reinforcing band 74 extending longitudinally between the corrugated medium and the outer liner 76. The blank is also cut away to show a longitudinal tear strip 75 positioned on the inner face of the inner liner as indicated more clearly in FIGURE 9.

A longitudinal sectional view of the blank of FIGURE 8 is shown in FIGURE 9 taken in the direction of the arrows 99, the tear strip 75 being on the outer face of the inner liner 77. FIGURE is also a longitudinal sectional view of the blank of FIGURE 8 taken in the direction of the arrows 19-10 showing the reinforcing band 74 positioned between the outer liner 76 and the cormgated medium 73.

The inner sleeve blank of the modified form of the invention is substantially the same as the blank B of FIG- URE 1 which is transversely scored at 21 to define side walls 20 and the securing flap 22.

A perspective view of the outer sleeve assembled into polygonal form from the blank of FIGURE 8 is illustrated in FIGURE 11, the remote panels 56 being secured together by the glue flap 55 and the top flaps 57 to 62 inclusive folded inwardly and downwardly adjacent the inner face of the outer sleeve side walls. The drawing also shows the initial position of these top flaps before folding by dotted lines and also the tear strip on the inner face of the inner liner encircling the container at an appreciable distance below the free end edges of the inner sleeve. This drawing also shows the inwardly folded bottom flaps 65 to 74 inclusive by dotted lines.

It will be noted that the flaps 58 and 59 separated by slot 63 and flap 69 and 61 by slot 64, with the side edges of the flaps within each pair hinged together, may be readily folded downwardly against the inner face of the body walls of the container and become automatically locked in this position when the sleeve is in tubular form without the use of staples, glue or other securing means. The same process of locking the flaps in position applies to the bottom flaps 65 to 76* inclusive. FIGURE 12 is a partial horizontal section through the folded outer sleeve flaps of the container of FIGURE 11 showing the locked flaps enclosing the reinforcing band 74.

FIGURE 13 shows a plan view of the blanks 78 for forming the top and bottom closures. The cover panel 79 which corresponds in contour to a horizontal section of the inner face of the outer sleeve of the container is defined by scores 79:: which are also the hinge lines of cover flanges St The outer edges of the flanges are defined by the scores 80a which are also the hinge lines of locking flaps '81. The cover flanges are separated on their side edges by slots 82.

The top and bottom closure members are assembled by reversely folding the locking flaps 81 in flatwise relation to the outer face of the flanges 80 and then folding the flanges substantially right angularly inwardly with respect to the inner face of the closure panel 79. FIG- URE 14 is a perspective view of the top and bottom closures assembled as described. The reversely folded locking flaps 81 may be secured to the outer face 80 of the cover panel flanges by staples 93 as indicated, or by glue or other suitable means.

FIGURE 15 is a perspective view illustrating the first step of assembling the container proper. The outer sleeve 50 with its unfolded bottom flaps 65 to 70 inclusive is telescoped over the bottom closure (assembled as in FIG- URE 14) until the free end edges 69 of the infolded bottom flaps 65 to 70 inclusive snap into end to end abutment with the free end edges of the bottom closure locking flaps 81. A portion of the lower part of FIG- URE 15 is broken away to clearly illustrate the relation of parts at this stage of the assembly.

The first stage of the operation of telescoping the inner sleeve 83 within the outer sleeve 50 is shown in the perspective view FIGURE 16, wherein a pair of connected together side panels 84 of the inner sleeve 33 are inwardly collapsed which permits the sleeve to be readily positioned with its bottom end edges 85 in abutment with the bottom closure panel 79 and at least one of its wall panels 84 in flatwise relation to the inner face of the closure flanges 89. FIGURE 17 is a somewhat enlarged fragmentary elevation of the lower portion of the container with the inner sleeve collapsed and in position as described. The full length perspective view of FIGURE 18 of the container shows the inner sleeve restored to its normal hexagonal position with all of its panels in closely parallel relation to the corresponding panels of the outer sleeve and the lower margins of all of its wall panels in flatwise contact with the inner face of closure panel flanges 80.

After the inner sleeve has been restored to its normal form within the outer sleeve, the container is loaded with flowable contents or other materials as indicated in the vertical sectional view of FIGURE 19. The loaded container is now ready for the application of the top closure. The process of inserting the top closure is shown in the vertical section FIGURE 20, wherein the flanges 80 of the cover panels 79 with their reversely folded upturned locking flaps 81 are being inserted between the top margins of the inner sleeve panels 84 and the inturned flaps 57 to 62 inclusive of the outer sleeve 54]. In the final position of the closures, the underface of the top and bottom cover panels 79 abut the top and bottom edges 85 respectively of the inner sleeve and the free end edges of the locking flaps 81 are in end to end abutment with the free end edges of the inturned outer sleeve flaps 57 to 62 inclusive, permanently immobilizing all parts of the container in fixed relation to each other. The upper marginal portion of the inner sleeve 33 is also in firm, fixed, gripping engagement or contact with the inner faces of the closure panel flanges 8d whereby relative movement between the inner and outer sleeve is prevented.

When top and bottom pads 35a are employed, the collapsed or crushed side margins of the pads will be interposed between the end edges of the inner sleeve panels 85 and the interface of the closure panels 7 9 as illustrated in the vertical sectional view FIGURE 21, forming a substantially incompressible closure of the panel 7% and the top edges of the inner sleeve panels 85.

The loaded container described is p ilfer proof as well as sift proof. All parts of the container are permanently locked in fixed position, consequently access tothe interior thereof is precluded without visual evidence of tampering or mutilation. The reinforcing band 74, positioned in close proximity to the top flap hinge line 51 of the outer sleeve wall panels, effectually prevents tearing or disruption of the package if and when the loaded container is carelessly dropped on a corner, for example in the course of handling and transportation. if desired a reinforcing band may be similarly placed in close proximity to the bottom hinge line 52 of the outer sleeve wall panels. For convenience at the point of use the tear strip 75 (shown in process of operation, FIGURE 18) permits the upper portion of the outer sleeve with attached closure member to be lifted from its telescoping relation with the inner sleeve for access to the contents and forms a replaceable cover telescoping the upper margin of the inner sleeve.

The permanent locking of all parts of the loaded container in fixed position permits the container to be handled on its side, upturned or in any other position without danger of damage or loss of contents.

It is understood that the particular embodiment of the invention described is illustrative and not restrictive. The invention may be susceptible of embodiment in other modified forms. All modifications which are similar or equivalent hereto come equally within the scope of the claims next appearing.

I claim:

l1. A locked end drum-like shipping container free from external strapping and formed from foldable sheet material and comprising telescoped inner and outer open ended sleeves and identical end closures disposed in locked engagement with each end of the sleeves, the sleeves and the end closures being immobilized in fixed relation to each other only by integral cooperating means associated with the outer sleeve and end closures and disposed wholly internally of the sleeves of the container, the outer sleeve including a series of Wall panels in foldably connected tubular relation and securing end flaps foldably connected to both ends of each wall panel and substantially coterminous in width therewith, the securing flaps infolded in flatwise contacting relation to the inner surfaces of the respective wall panels of the outer sleeve with the free terminal end edges thereof directed towards the opposite ends of the container, the inner sleeve having end edges and corresponding in configuration to the outer sleeve with end portions thereof disposed interiorly and in parallel relation to the outer sleeve securing flaps, the end closures each having a closure panel with side edges defined by score lines and conforming to the ends of the outer tubular sleeve interiorly of the infolded securing flaps of the outer tubular sleeve, said closure panels each including a plurality of flanges hinged :to the side edges thereof and substantially coextensive in width therewith and disposed between and in flatwise contacting relation to the outer sleeve securing flaps and end portions of the inner sleeve, the closure panel flanges having end edges determined by a fold line opposite the hinge connection to the closure panel with said end edges disposed inwardly of the outer sleeve securing flap free end edges, locking flaps hingedly connected by the fold line to the end edges of the closure panel flanges and secured in flatwise relation to the outer surface of the ends of the closure flanges, said locking flaps having free end edges aligned and in edgewise abutting relation to the outer sleeve securing flaps free end edges and immobilizing the end closures from movement outwardly of the ends of the container, the inner end edges of the closure flanges being diminished in width to permit insertion between the outer sleeve securing flaps and inner sleeve, the inner sleeve end edges each being in abutting relation to the inner face of the respective closure panel thereby immobilizing the end closures from movement inwardly of the container.

2.A drum-like shipping container formed from foldable sheet material and comprising telescoped inner and outer open ended sleeves and end closures in locked engagement with each end of the sleeves, the sleeves and the end closures immobilized in fixed relation to each other only by means disposed wholly internally of the container, the outer sleeve including a series of wall panels in foldably connected tubular relation and securing flaps foldably connected to the ends of each of the wall panels and substantially cotermin'ous in width therewith, the securing flaps infolded in fiat-wise relation to the inner margins of the respective wall panels with free end edges thereof directed towards the opposite ends of the container, the inner sleeve corresponding in configuration to the outer sleeve and having end edges, the end closures each having a closure panel with side edges conforming to the ends of the outer sleeve interiorly of the infolded securing flaps, said closure panels each being provided with flanges having hinge connections to the side edges thereof and substantially coextensive in width therewith and disposed between and in flatwise contacting relations to the outer sleeve securing flaps and end portions of the inner sleeve, the closure panel flanges having inner end edges opposite the hinge connection to the closure panel with said inner edges disposed inwardly of the outer sleeve securing flap free end edges, locking flaps secured in fiatwise relation to the outer surface of the ends of the closure flanges, said locking flaps having free end edges aligned and in edgewise abutting relation to the outer sleeve securing flaps free end edges immobilizing both the end closures from movement outwardly of the ends of the container, the inner end edges of the closure flanges being diminished in width to permit insertion between the outer sleeve securing flaps and inner sleeve, the inner sleeve end edges each being in abutting relation to the inner face of the respective closure panel thereby immobilizing the end closures from movement inwardly of the container.

3. The container as set forth and claimed in claim 2 wherein a closure panel is reinforced by a flat sheet, the sheet corresponding in contour to the closure panel and disposed in flatwise relation against the inner surface thereof, the end margins of the sheet intervening between the closure panel and the end of the inner sleeve and in contacting relation therewith.

4. The container set forth and claimed in claim 2 including means for opening the container comprising a 3,1 1 5,292 9 manually separable portion of the outer sleeve in spaced adjacency to one end thereof adapted to completely sever said sleeve to provide a telescoping cover including the 2 347 417 Kraft Apr 25 d closure 2,371,630 Liebmann Mar. 20, 'lhe contalner set forth and clauned 1n clann 2 5 2,794,588 George etal June 4,

wherein at least one ad acent pair of outer sleeve securing 2 808 190 Buhrmaster et a1 Oct 1 flaps are separated on their side edges by a slot and at u least one adjacent pair have side edges determined by a FOREIGN PATENTS hinge connection. 755,743 Great Britain Aug. 29,

References Cited in the file of this patent UNITED STATES PATENTS

Claims (1)

1. A LOCKED END DRUM-LIKE SHIPPING CONTAINER FREE FROM EXTERNAL STRAPPING AND FORMED FROM FOLDABLE SHEET MATERIAL AND COMPRISING TELESCOPED INNER AND OUTER OPEN ENDED SLEEVES AND IDENTICAL END CLOSURES DISPOSED IN LOCKED ENGAGEMENT WITH EACH END OF THE SLEEVES, THE SLEEVES AND THE END CLOSURES BEING IMMOBILIZED IN FIXED RELATION TO EACH OTHER ONLY BY INTEGRAL COOPERATING MEANS ASSOCIATED WITH THE OUTER SLEEVE AND END CLOSURES AND DISPOSED WHOLLY INTERNALLY OF THE SLEEVES OF THE CONTAINER, THE OUTER SLEEVE INCLUDING A SERIES OF WALL PANELS IN FOLDABLY CONNECTED TUBULAR RELATION AND SECURING END FLAPS FOLDABLY CONNECTED TO BOTH ENDS OF EACH WALL PANEL AND SUBSTANTIALLY COTERMINOUS IN WIDTH THEREWITH, THE SECURING FLAPS INFOLDED IN FLATWISE CONTACTING RELATION TO THE INNER SURFACES OF THE RESPECTIVE WALL PANELS OF THE OUTER SLEEVE WITH THE FREE TERMINAL END EDGES THEREOF DIRECTED TOWARDS THE OPPOSITE ENDS OF THE CONTAINER, THE INNER SLEEVE HAVING END EDGES AND CORRESPONDING IN CONFIGURATION TO THE OUTER SLEEVE WITH END PORTIONS THEREOF DISPOSED INTERIORLY AND IN PARALLEL RELATION TO THE OUTER SLEEVE SECURING FLAPS, THE END CLOSURES EACH HAVING A CLOSURE PANEL WITH SIDE EDGES DEFINED BY SCORE LINES AND CONFORMING TO THE ENDS OF THE OUTER TUBULAR SLEEVE INTERIORLY OF THE INFOLDED SECURING FLAPS OF THE OUTER TUBULAR SLEEVE, SAID CLOSURE PANELS EACH INCLUDING A PLURALITY OF FLANGES HINGED TO THE SIDE EDGES THEREOF AND SUBSTANTIALLY COEXTENSIVE IN WIDTH THEREWITH AND DISPOSED BETWEEN AND IN FLATWISE CONTACTING RELATION TO THE OUTER SLEEVE SECURING FLAPS AND END PORTIONS OF THE INNER SLEEVE, THE CLOSURE PANEL FLANGES HAVING END EDGES DETERMINED BY A FOLD LINE OPPOSITE THE HINGE CONNECTION TO THE CLOSURE PANEL WITH SAID END EDGES DISPOSED INWARDLY OF THE OUTER SLEEVE SECURING FLAP FREE END EDGES LOCKING FLAPS HINGEDLY CONNECTED BY THE FOLD LINE TO THE END EDGES OF THE CLOSURE PANEL FLANGES AND SECURED IN FLATWISE RELATION TO THE OUTER SURFACE OF THE ENDS OF THE CLOSURE FLANGES, SAID LOCKING FLAPS HAVING FREE END EDGES ALIGNED AND IN EDGEWISE ABUTTING RELATION TO THE OUTER SLEEVE SECURING FLAPS FREE END EDGES AND IMMOBILIZING THE END CLOSURE FROM MOVEMENT OUTWARDLY OF THE ENDS OF THE CONTAINER, THE INNER END EDGES OF THE CLOSURE FLANGES BEING DIMINISHED IN WIDTH TO PERMIT INSERTION BETWEEN THE OUTER SLEEVE SECURING FLAPS AND INNER SLEEVE, THE INNER SLEEVE END EDGES EACH BEING IN ABUTTING RELATION TO THE INNER FACE OF THE RESPECTIVE CLOSURE PANEL THEREBY IMMOBILIZING THE END CLOSURES FROM MOVEMENT INWARDLY OF THE CONTAINER.
US16811562 1958-09-15 1962-01-23 Multi-wall bulk pak shipping container Expired - Lifetime US3115292A (en)

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US761263A US3041942A (en) 1958-09-15 1958-09-15 Method of assembling multi-wall bulk pak shipping containers
US16811562 US3115292A (en) 1958-09-15 1962-01-23 Multi-wall bulk pak shipping container

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Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3204849A (en) * 1963-06-21 1965-09-07 Jules O Vinney Hexagonal, corrugated shipping container
US3285496A (en) * 1965-01-13 1966-11-15 Barnhardt Mfg Co Polygonal tubular container with reclosable end
US3993240A (en) * 1975-12-10 1976-11-23 Graphic Arts Packaging Corporation Blanks for forming a rectangular box and lid
US4042169A (en) * 1976-08-24 1977-08-16 Corrugated Drum Of Michigan, Inc. Container cover
US4089417A (en) * 1977-07-25 1978-05-16 Westvaco Corporation Flap lock bulk bin
US4205775A (en) * 1978-11-16 1980-06-03 Swan Walter B Polygonal container
WO1981001398A1 (en) * 1979-11-19 1981-05-28 W Swan A polygonal container
US4340168A (en) * 1979-12-12 1982-07-20 Champion International Corporation Carton with locking mechanism for slidable top and bottom
US4418861A (en) * 1982-02-23 1983-12-06 International Paper Company Hexagonal container
US4531669A (en) * 1983-07-06 1985-07-30 Westvaco Corporation Interlock between telescoping cover and tray
US4834255A (en) * 1986-05-28 1989-05-30 Boots Gerardus A M Container for free-flowing materials, powders, pellets and the like
US4917289A (en) * 1988-01-27 1990-04-17 Shippers Paper Products Company Bulk container base construction
US5253772A (en) * 1991-05-21 1993-10-19 Sweetheart Cup Company, Inc. Tamper evident container assembly
US5337895A (en) * 1992-12-03 1994-08-16 Cleo, Inc. Protective end cap for paper rolled on a tube
US5490827A (en) * 1991-05-21 1996-02-13 Sweetheart Cup Company, Inc. Tamper evident container and related apparatus
US5507432A (en) * 1994-10-25 1996-04-16 Industrial Adhesives, Inc. System for separating corrugated fiberboard
US5579989A (en) * 1995-03-13 1996-12-03 Universal Packaging Corporation Multi-sided flip-top container
US5658228A (en) * 1992-04-30 1997-08-19 Sweetheart Cup Company, Inc. Tamper evident container and related apparatus
US20060144909A1 (en) * 2005-01-05 2006-07-06 Christian Kohlweyer Container with hollow bottom
US20080067221A1 (en) * 2006-09-19 2008-03-20 Mengistu Tesfahun Y Collapsible bulk bin and methods for constructing the same
US20080203142A1 (en) * 2004-07-15 2008-08-28 Henkel Kgaa Powder-Tight Packaging
US20100230479A1 (en) * 2006-09-19 2010-09-16 Graham Thomas D Collapsible container and blanks for constructing the same
US20130037979A1 (en) * 2011-08-09 2013-02-14 D & L Innovations, Inc. Systems and methods for forming concrete footings
USD725315S1 (en) * 2013-07-19 2015-03-24 Purina Animal Nutrition Llc Feed container
US9643749B2 (en) 2012-11-07 2017-05-09 Graphic Packaging International, Inc. Carton with handle features
USD893997S1 (en) * 2018-09-12 2020-08-25 Wilson Sporting Goods Co. Tennis ball container

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Publication number Priority date Publication date Assignee Title
US2347417A (en) * 1942-02-11 1944-04-25 Guillermo Kraft Ltda Sa De Imp Closure for containers in general
US2371630A (en) * 1943-06-18 1945-03-20 Harry A Blessing Cartridge container
GB755743A (en) * 1954-01-11 1956-08-29 Thompson And Norris Mfg Compan Improvements in or relating to boxes, cases or other containers
US2808190A (en) * 1954-07-26 1957-10-01 Crown Zellerbach Corp Heavy-duty telescopic container
US2794588A (en) * 1954-12-06 1957-06-04 Crown Zellerbach Corp Closures for paperboard containers

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3204849A (en) * 1963-06-21 1965-09-07 Jules O Vinney Hexagonal, corrugated shipping container
US3285496A (en) * 1965-01-13 1966-11-15 Barnhardt Mfg Co Polygonal tubular container with reclosable end
US3993240A (en) * 1975-12-10 1976-11-23 Graphic Arts Packaging Corporation Blanks for forming a rectangular box and lid
US4042169A (en) * 1976-08-24 1977-08-16 Corrugated Drum Of Michigan, Inc. Container cover
US4089417A (en) * 1977-07-25 1978-05-16 Westvaco Corporation Flap lock bulk bin
US4205775A (en) * 1978-11-16 1980-06-03 Swan Walter B Polygonal container
WO1981001398A1 (en) * 1979-11-19 1981-05-28 W Swan A polygonal container
US4340168A (en) * 1979-12-12 1982-07-20 Champion International Corporation Carton with locking mechanism for slidable top and bottom
US4418861A (en) * 1982-02-23 1983-12-06 International Paper Company Hexagonal container
US4531669A (en) * 1983-07-06 1985-07-30 Westvaco Corporation Interlock between telescoping cover and tray
US4834255A (en) * 1986-05-28 1989-05-30 Boots Gerardus A M Container for free-flowing materials, powders, pellets and the like
US4917289A (en) * 1988-01-27 1990-04-17 Shippers Paper Products Company Bulk container base construction
US5653382A (en) * 1991-05-21 1997-08-05 Sweetheart Cup Company, Inc. Tamper evident container and related apparatus
US5253772A (en) * 1991-05-21 1993-10-19 Sweetheart Cup Company, Inc. Tamper evident container assembly
US5490827A (en) * 1991-05-21 1996-02-13 Sweetheart Cup Company, Inc. Tamper evident container and related apparatus
US5658228A (en) * 1992-04-30 1997-08-19 Sweetheart Cup Company, Inc. Tamper evident container and related apparatus
US5337895A (en) * 1992-12-03 1994-08-16 Cleo, Inc. Protective end cap for paper rolled on a tube
US5507432A (en) * 1994-10-25 1996-04-16 Industrial Adhesives, Inc. System for separating corrugated fiberboard
US5579989A (en) * 1995-03-13 1996-12-03 Universal Packaging Corporation Multi-sided flip-top container
US20080203142A1 (en) * 2004-07-15 2008-08-28 Henkel Kgaa Powder-Tight Packaging
US20060144909A1 (en) * 2005-01-05 2006-07-06 Christian Kohlweyer Container with hollow bottom
US20080067221A1 (en) * 2006-09-19 2008-03-20 Mengistu Tesfahun Y Collapsible bulk bin and methods for constructing the same
US20100230479A1 (en) * 2006-09-19 2010-09-16 Graham Thomas D Collapsible container and blanks for constructing the same
US9428299B2 (en) 2006-09-19 2016-08-30 Westrock Shared Services, Llc Collapsible bulk bin and methods for constructing the same
US8814031B2 (en) 2006-09-19 2014-08-26 Rock-Tenn Shared Services, Llc Collapsible container and blanks for constructing the same
US8991684B2 (en) * 2006-09-19 2015-03-31 Rock-Tenn Shared Services, Llc Collapsible bulk bin and methods for constructing the same
US9181025B2 (en) 2006-09-19 2015-11-10 Rock-Tenn Shared Services, Llc Collapsible container and blanks for constructing the same
US9376826B2 (en) * 2011-08-09 2016-06-28 D & L Innovations, Inc. Form sleeve for forming concrete footings
US20130037979A1 (en) * 2011-08-09 2013-02-14 D & L Innovations, Inc. Systems and methods for forming concrete footings
US9643749B2 (en) 2012-11-07 2017-05-09 Graphic Packaging International, Inc. Carton with handle features
USD725315S1 (en) * 2013-07-19 2015-03-24 Purina Animal Nutrition Llc Feed container
USD893997S1 (en) * 2018-09-12 2020-08-25 Wilson Sporting Goods Co. Tennis ball container

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