US3393826A - Stackable container and apparatus for its manufacture - Google Patents
Stackable container and apparatus for its manufacture Download PDFInfo
- Publication number
- US3393826A US3393826A US560533A US56053366A US3393826A US 3393826 A US3393826 A US 3393826A US 560533 A US560533 A US 560533A US 56053366 A US56053366 A US 56053366A US 3393826 A US3393826 A US 3393826A
- Authority
- US
- United States
- Prior art keywords
- container
- wall
- containers
- manufacture
- portions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/30—Moulds
- B29C51/34—Moulds for undercut articles
- B29C51/346—Moulds for undercut articles specially adapted to facilitate the destacking of nestable containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS 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
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/22—Boxes or like containers with side walls of substantial depth for enclosing contents
- B65D1/26—Thin-walled containers, e.g. formed by deep-drawing operations
- B65D1/265—Drinking cups
Definitions
- a stackable container having an annular wall tapering downwardly toward a closed end and being deformed at its closed end to form a projection having a support shelf for the lower end of a similar container, the projection being formed by side walls having upper portions which are arcuate radially and axially and which merge with lower, parallel sides of less width than the width of the shelf so as to preclude sticking of containers within each other due to nesting of the support shelves.
- This invention relates to stackable or nestable containers and apparatus for their manufacture, and more particularly the invention relates to the manufacture of molded plastic containers provided with means :for preventing undue telescoping of the containers when one is inserted into another and thereby enabling a plurality of containers to be arranged in stacked or nested condition without sticking to one another.
- Coin operated beverage dispensing machines conventionally make use of plastic cups or container which are supported in stacks and from which individual cups may be withdrawn by automatic means.
- Such cups conventionally have beaded or rolled rims which are utilized in the unstacking operation, so it is necessary that the rims of adjacent containers be maintained in spaced apart relation and that the stacked cups be readily separable. Separation of the rims of adjacent cups and prevention of sticking has been accomplished heretofore by the provision of an inwardly extending annular shelf or ledge located usually adjacent the closed end or bottom of each container in a position to engage the bottom of another container nested within the first container. Ledges or shelves of this type reduce the capacity of the containers.
- An object of this invention is to provide an improved stackable container.
- Another object of the invention is to provide a stackable container having a plurality of inwardly projecting abutments or supports for engaging the bottom of a nested container and wherein the abutments serve not only to prevent sticking of nested containers but also rigidify the closed end of the container.
- Another object of the invention is to provide improved molding apparatus for forming containers of the class described.
- FIGURE 1 is an elevational view of two nested containers constructed in accordance with the invention with part of the outer container broken away for clarity;
- FIGURE 2 is a top plan view of a container
- FIGURE 3 is an enlarged, fragmentary, vertical sectional view through the side and bottom walls of the container;
- FIGURE 4 is a sectional view taken on the line 4-4 of FIGURE 3;
- FIGURE 5 is an enlarged, elevational view of a portion of the container wall as viewed in the direction of the arrow a in FIGURE 4;
- FIGURE 6 is a fragmentary, sectional view through a mold adapted to form containers of the kind shown in FIGURES 1-5;
- FIGURE 7 is a top plan view of the mold.
- FIGURE 8 is a fragmentary, elevational view illustrating a modified form of container.
- a container constructed in accordance with the invention may be molded from any one of a number of suitable kinds of plastic material such as polyethylene, polystyrene, polypropylene, or the like, and comprises an annular side wall 1 of generally cylindrical, downwardly tapering configuration terminating at one end in a bottom or closure wall 2, the container being open at its other end.
- the open end of the wall 1 is provided with an outwardly rolled head or rim 3.
- a plurality of supports or abutments 4 each of which has a Hat, upper, substantially radially extending wall or shelf, 5 and a flat, substantially vertical or axially extending inner wall or web 6 to which are joined opposed side walls 7 and 8 which, in turn, are joined to the annular wall 1.
- the annular wall and the bottom wall 2 are deformed inwardly to form the support 4.
- the walls 7 and 8 are arcuate both radially and axially and have upper portions 9 and 10, respectively, which diverge upwardly and which terminate at their lower ends in wall portions 11 and 12, which are substantially vertical but converge inwardly of the container.
- each support forms a socket 13 having a substantially tulip-shaped appearance, as is shown in FIGURE 5.
- the shape of the socket is such that the circumferential width of the upper wall 5 is greater than the corresponding dimension between the inner edges of the wall portions 11 and 12.
- FIGURES l and 2 there are three identical supports 4 spaced uniformly about the circumference of the container. As many supports 4 as are desired may be provided, however, and FIGURE 8 discloses a container having a large number of such supports. Regardless of the number of supports provided in any container, the walls of each support are joined to the annular wall 1 and to the bottom wall 2 so as to rigidify the closed end of the container.
- each abutment 4 provides an exceptionally strong support so as to preclude its being deformed or broken by a nested container, and each abutment projects sufliciently far inwardly of its container that the flat wall 5 provides a sufficiently large supporting area to preclude its being imbedded in the bottom of a nested container which might be formed of plastic foam.
- a container according to the invention may be formed in a conventional mold 14 comprising a die body or block 15 in which is a cavity 16 having a side wall 17 shaped to complement the wall 1 and having a bottom 18 corresponding to the container bottom wall. Passages 19 in the body 15 communicate with the cavity 16 and may be connected to a source of suction so as to evacuate the cavity 16 during the molding operation, whereupon a suitably heated sheet of plastic material will be drawn into the cavity and take the shape of the walls thereof to form the container.
- the abuments 4 are formed in the container during the molding process by means ofpins or plugs 20 driven into sockets 21 located at the juncture of the walls 17 and 18 and spaced uniformly circumferentially about the bottom wall.
- Each pin has a flat upper surface 22, a flattened rear or outer surface 23 which bears against the wall 17, a flattened inner surface 24 facing into the cavity 16, and opposite side surfaces 25 and 26 having portions conforming to the corresponding portions of the abutment walls 7 and 8.
- the upper side edges of the sides 25 and 26 diverge upwardly.
- a stackable container having an annular wall tapering downwardly from an open end to a closure wall at its lower end, said annular wall and said closure wall being deformed inwardly to form a projection having a support shelf for the closed end of a similar container, said projection having side walls whose upper portions are arcuate radially and axially of said container and 4 merge at their upper ends with said shelf, said projection having also lower side wall portions which parallel one another and merge with said upper portions and with said closure wall, said shelf having a greater circumferential width than the circumferential distance between said parallel side wall portions.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Stackable Containers (AREA)
Description
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US560533A US3393826A (en) | 1966-06-27 | 1966-06-27 | Stackable container and apparatus for its manufacture |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US560533A US3393826A (en) | 1966-06-27 | 1966-06-27 | Stackable container and apparatus for its manufacture |
Publications (1)
Publication Number | Publication Date |
---|---|
US3393826A true US3393826A (en) | 1968-07-23 |
Family
ID=24238196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US560533A Expired - Lifetime US3393826A (en) | 1966-06-27 | 1966-06-27 | Stackable container and apparatus for its manufacture |
Country Status (1)
Country | Link |
---|---|
US (1) | US3393826A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3441173A (en) * | 1967-08-09 | 1969-04-29 | Illinois Tool Works | Stackable container |
US3471055A (en) * | 1967-02-08 | 1969-10-07 | Illinois Tool Works | Nestable container with bottom stacking |
US3527380A (en) * | 1966-06-27 | 1970-09-08 | Brown Machine Co Of Michigan | Stockable container and apparatus for its manufacture |
US3900106A (en) * | 1973-11-26 | 1975-08-19 | Joseph Cantales | Stackable plastic garbage can with integral top |
US4915216A (en) * | 1988-12-27 | 1990-04-10 | Magers Paul E | Surgical bowl |
DE9212978U1 (en) * | 1992-09-29 | 1992-12-17 | Schiffelholz, Max, 8870 Guenzburg, De | |
US20060157485A1 (en) * | 2004-01-23 | 2006-07-20 | Bouie Tony V | Cup and lid combination |
US20080099484A1 (en) * | 2004-01-23 | 2008-05-01 | Halo Cups, Inc. | Lid assembly and method for use thereof |
US7398893B2 (en) * | 2004-01-23 | 2008-07-15 | Halo Cups, Inc. | Cup and lid combination |
US7419067B2 (en) * | 2004-01-23 | 2008-09-02 | Halo Cups, Inc. | Cup and lid combination |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2854790A (en) * | 1957-07-26 | 1958-10-07 | Richard E Hartung | Lockproof flower pots |
US3083888A (en) * | 1957-12-06 | 1963-04-02 | Contlnental Can Company Inc | Composite cup and bottom therefor |
US3262626A (en) * | 1963-09-25 | 1966-07-26 | Sweetheart Plastics | Cup |
-
1966
- 1966-06-27 US US560533A patent/US3393826A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2854790A (en) * | 1957-07-26 | 1958-10-07 | Richard E Hartung | Lockproof flower pots |
US3083888A (en) * | 1957-12-06 | 1963-04-02 | Contlnental Can Company Inc | Composite cup and bottom therefor |
US3262626A (en) * | 1963-09-25 | 1966-07-26 | Sweetheart Plastics | Cup |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3527380A (en) * | 1966-06-27 | 1970-09-08 | Brown Machine Co Of Michigan | Stockable container and apparatus for its manufacture |
US3471055A (en) * | 1967-02-08 | 1969-10-07 | Illinois Tool Works | Nestable container with bottom stacking |
US3441173A (en) * | 1967-08-09 | 1969-04-29 | Illinois Tool Works | Stackable container |
US3900106A (en) * | 1973-11-26 | 1975-08-19 | Joseph Cantales | Stackable plastic garbage can with integral top |
US4915216A (en) * | 1988-12-27 | 1990-04-10 | Magers Paul E | Surgical bowl |
DE9212978U1 (en) * | 1992-09-29 | 1992-12-17 | Schiffelholz, Max, 8870 Guenzburg, De | |
US20060157485A1 (en) * | 2004-01-23 | 2006-07-20 | Bouie Tony V | Cup and lid combination |
US20080099484A1 (en) * | 2004-01-23 | 2008-05-01 | Halo Cups, Inc. | Lid assembly and method for use thereof |
US7398892B2 (en) * | 2004-01-23 | 2008-07-15 | Halo Cups, Inc. | Cup and lid combination |
US7398893B2 (en) * | 2004-01-23 | 2008-07-15 | Halo Cups, Inc. | Cup and lid combination |
US7419067B2 (en) * | 2004-01-23 | 2008-09-02 | Halo Cups, Inc. | Cup and lid combination |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: JOHN BROWN INDUSTRIES LTD.; 100 WEST TENTH ST., WI Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:LEESONA CORPORATION; 333 STRAWBERRY FIELD RD., WARWICK, RI. A CORP. OF MA.;REEL/FRAME:003936/0206 Effective date: 19810501 |
|
AS | Assignment |
Owner name: LEESONA CORPORATION Free format text: CHANGE OF NAME;ASSIGNOR:JOHN BROWN INDUSTRIES LTD.;REEL/FRAME:003936/0238 Effective date: 19810331 |
|
AS | Assignment |
Owner name: LEESONA CORPORATION, A CORP. OF MASS. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KOEHRING COMPANY;REEL/FRAME:003954/0491 Effective date: 19751212 Owner name: LEESONA CORPORATION, A CORP. OF MASS., MASSACHUSET Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KOEHRING COMPANY;REEL/FRAME:003954/0491 Effective date: 19751212 |