US3459360A - Locking means for carton covers - Google Patents

Locking means for carton covers Download PDF

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Publication number
US3459360A
US3459360A US704592A US3459360DA US3459360A US 3459360 A US3459360 A US 3459360A US 704592 A US704592 A US 704592A US 3459360D A US3459360D A US 3459360DA US 3459360 A US3459360 A US 3459360A
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US
United States
Prior art keywords
container
post
latch
locking
post latch
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
Application number
US704592A
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English (en)
Inventor
Marcel Bagay
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Keyes Fibre Corp
Original Assignee
Keyes Fibre Corp
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Filing date
Publication date
Application filed by Keyes Fibre Corp filed Critical Keyes Fibre Corp
Application granted granted Critical
Publication of US3459360A publication Critical patent/US3459360A/en
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Classifications

    • 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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
    • B65D85/32—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for eggs
    • B65D85/324—Containers with compartments made of pressed material
    • 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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
    • B65D85/32—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for eggs

Definitions

  • Containers molded of fibrous pulp material comprising upper and lower halves with a post latch on one of the container halves and a locking aperture in the upstanding side wall portion of the other half arranged to receive the post latch when the container is closed.
  • the locking aperture defines a forward edge portion in the side wall beyond which the post latch laterally extends when the container halves are latched together and a rear edge portion in the side wall that limits rearward flexing of the post latch in a direction away from the forward edge portion.
  • the present invention relates to containers and more particularly to molded pulp containers having upper and lower halves, and a latching arrangement for releasably locking the halves together.
  • an object of the present invention is to provide a fibrous pulp container having a simple and highly reliable arrangement for releasably locking the container halves together.
  • a container molded of fibrous pulp material has upper and lower halves with a post latch on one of the halves and a lock- 3,459,360 Patented Aug. 5, 1969 together. Additionally, the aperture defines a rear edge portion in the side wall and this portion functions to limit rearward flexing of the post latch in a direction away from the forward edge portion.
  • the post latch is dimensioned slightly larger than the locking aperture so that the head portion of the latch must be collapsed slightly during latching and unlatching of the container.
  • the post latch is only larger than the locking aperture in the direction between the forward and rear edge portions defined by the aperture.
  • the post latch may include a head portion with a polygonal cross section comprising a plurality of inclined side walls each of which is slightly concave in configuration.
  • a pair of post latches may be provided on one of the container halves with locking apertures disposed in the other half arranged to receive the latches when the container is closed.
  • the lower half can include a plurality of article receiving pockets with spaced apart half-post formations in the side wall between the pockets. Additionally, each post latch can be formed as an upward extension of selected half-post formations.
  • FIGURE 1 is an end elevational view of a container according to the present invention
  • FIGUREZ is a sectional elevational view taken along line 2-2 of FIGURE 1;
  • FIGURE 3 is a top plan view of the container shown in FIGURE 1;
  • FIGURE 4 is a top plan view of another container according to the present invention with portions of the cover broken away to show detail;
  • FIGURE 5 is a front elevational view of the container shown in FIGURE 4.
  • FIGURE 6 is a sectional elevational view taken along line 6--6 of FIGURE 5.
  • reference numeral 10 represents a container molded of fibrous pulp material by suction deposition of fibers suspended in an aqueous medium on a suitably configured open-face molding die.
  • the container includes a lower half or bottom section 12 integrally connected to an upper half or cover section 14 along a pulp hinge 16.
  • the bottom section has a peripheral rim 18 that engages a similar rim 20 on the cover when the container is in the closed position illustrated in the drawing.
  • the lower half 12 of the container is divided into a plurality of individual article receiving pockets 22 by suiting aperture in the upstanding side Wall of the other half able rib structure so that individual items such as eggs, for example, can be positioned in these pockets.
  • an upwardly extending hollow post formation 24 is disposed in the center of each group of four pockets and the lid rests against the top of this formation when the container is closed.
  • the lower half of the container may take the form of a tray having a bottom wall with an upwardly extending side wall connected thereto.
  • the lower half of the container carries a post latch 26 formed as an upward extension of the side wall between the end pockets in the lower container half.
  • the post latch is located between the end pockets of the container Opposite the pulp hinge 16.and cooperates with a locking aperture 28 in the upstanding side wall portion 30 of the cover 14 to lock the container closed.
  • the post latch includes a head 32 with a polygonal transverse cross-section and directly below the head a notch 34 is provided to facilitate the latching operation.
  • the head of the post latch comprises a plurality of side walls 36 each of which is inclined inwardly in a direction away from the lower half of the container. In the embodiment of the invention illustrated in FIGURES 1-3, the head has an octagonal cross-section and each of the eight side walls 36 is slightly concave in configuration to assist in deforming the head slightly during latching and unlatching of the container halves.
  • the locking aperture 28 positioned in the upstanding side wall 30 of the container cover 14 is arranged to receive the post latch 26 when the container is closed.
  • the aperture is defined in part by a horizontal forward or hooking edge portion 38 beyond which the head 32 of the post latch laterally extends when the container halves are latched together.
  • the aperture defines a rear edge portion 40 which prevents or substantially limits rearward flexing of the post latch in a direction away from the forward edge portion. As shown in FIGURE 2, the rear edge portion 40 is positioned directly behind the upper portion of the post latch when the container halves are latched together whereby rearward flexing of the latch is prevented.
  • the major horizontal cross-section of the post latch 26 is slightly larger than the locking aperture in at least one direction, this direction being illustrated as the horizontal direction between the forward and rear edge portions 38, 40 in the upstanding side wall 30 of the container cover 14.
  • this direction being illustrated as the horizontal direction between the forward and rear edge portions 38, 40 in the upstanding side wall 30 of the container cover 14.
  • FIGURES 46 illustrate another embodiment of the present invention wherein a container 100 comprises a lower half or bottom member 102 and an upper half or top member 104.
  • the bottom member 102 includes upstanding side wall portions such as end walls and a front wall 106 and a rear wall 108, each having a plurality of inwardly contoured half-posts 110 integrally formed at spaced intervals to help define a plurality of article-receiving pockets 112.
  • Rib means 114 intersecting with the half-posts and with a series of full posts 116 located interiorly of the container complete the definition of the plurality of downwardly dished article-receiving pockets 112 in the bottom member 102.
  • the pockets 112 are adapted to hold ten articles, such as eggs, for example, and in the illustrated embodiment, they are arranged in two rows of five articles each. The rows extend parallel with the front and rear walls 106, 108 of the bottom member.
  • the ribs and posts and half-posts of the bottom member 102 not only define the plurality of article-receiving pockets 112, but also impart a great deal of strength to this portion of the container, and thus hold the front and rear walls 106, 108 of the bottom member in relatively fixed relationship to each other even under the stresses and strains encountered under normal handling of the container.
  • the cover half 104 of the container 100 includes a substantially planar base portion 118 suitable for carrying indicia such as printed advertising material, flat labels glued or otherwise adhered thereto which in turn carry pre-printed advertising material, or the like.
  • the cover further includes an upstanding front wall 120 and rear wall 122 integrally connected with the planar base portion 118.
  • An elongated molded pulp hinge 124 connects the lower edge of the top member rear wall 122 with the upp r e ge of the bottom member rear Wall 108 to enable the top member to be folded down over the bottom member from an opened to a closed position.
  • a series of generally vertically disclosed buttress ribs 126 are integrally formed as inwardly extending indentations in the upstanding front and rear walls 120, 122 of the top member 104.
  • the buttress ribs 126 serve to resist vertically directed forces and thus strengthen the top half of the container in the same manner that the half-posts strengthen the bottom portion of the container against vertically directed forces.
  • the integrally formed buttress ribs 126 in the upstanding side walls of the top member merge with the planar base portion 118 of the top.
  • each post latch 128 is advisably formed as an upward extension of one of the half-posts 110 in the front wall 106 of the bottom member 102.
  • One post latch is positioned on the half-post that separates the first and second article-receiving pockets 112 of the front row, and the other is positioned on the half-post between the fourth and fifth pockets of the front row.
  • Each post latch 128 includes a head 132 having a polygonal transverse cross-section and directly below the head a notch 134 is provided to facilitate latching of the container members together, as explained more fully below.
  • the head 132 of the post latch 128 comprises a plurality of side walls 136 each of which is inclined inwardly in a direction away from the lower half of the container.
  • each of the locking apertures 130 positioned in the upstanding front wall is arranged to receive one of the post latches 128 when the container is closed. These apertures are positioned in the buttress ribs 126 directly above the post latches. Each aperture is defined in part by a horizontal forward or hooking edge portion 138 beyond which the head 132 of the post latch laterally extends when the container halves latch together. Additionally, each aperture defines a rear edge portion 140 which prevents or substantially limits rearward flexing of each post latch in a direction away from the forward edge portion 138. As shown in FIG- URE 6, the rear edge portions 140 in the upstanding front wall 120 defined by the locking apertures 130 are positioned directly behind the upper portions of each post latch 128 when the container members are latched together whereby rearward flexing of the latch is prevented.
  • each post latch 128 is slidably larger than its associated locking aperture in at least one direction, this direction being the horizontal direction between the forward hooking edge 138 and the rear edge 140 in buttress ribs 126 of the top member 104. Accordingly, in moving each post latch through its associated locking aperture, the latch is distorted slightly, and after passing through the aperture it reassumes its original shape.
  • the container locking arrangement relates to an improved container construction.
  • the filled container is conveyed through an automatic lid closing machine where the container halves are latched together.
  • Such machines are of several varieties, and they generally manipulate the various functional portions of the container in the same manner that these portions would be manipulated by hand, but at much higher speeds.
  • Concerning the containers of the present invention all that is necessary after the articles are positioned within the articlereceiving pockets is that the cover member be moved downwardly about the hinge means so as to close the container.
  • the post latch or post latches if plural latching arrangements are used, then enter the locking apertures disposed in the upstanding side wall of the cover member. Since the head portion of each post latch is slightly larger than the locking aperture into which it is inserted in the horizontal direction between the forward and rear edge portions defined by the aperture, the head portion is deformed, compressed or collapsed slightly as the cover section continues to close. Finally, the marginal rims of the cover and bottom members abut one another and the head portion of the post latch clears the forward hooking edge portion of the aperture.
  • the resilient nature of the molded pulp material from which the container is made causes the head portion of the post latch to reassume its normal shape, or in other words its configuration prior to deformation whereby the container members are releasably latched together. To unlock the container, the head portion of each post latch is deformed slightly until its cross-sectional outline is smaller than the locking aperture. The cover half of the container can then be moved away from the bottom half to its open position.
  • a container molded of fibrous pulp material comprising upper and lower halves, a post latch of the type having a latching ledge and a head portion therebeyond on one of the container halves, a side wall portion on the other container half and a locking aperture in the side wall portion arranged to receive the post latch when two halves of the container are in the closed position, the locking aperture being defined by a forward edge portion in the upstanding side wall over which the latching ledge of the post latch laterally extends when the container halves are latched together and a rear edge portion in the side wall that limits rearward movement of the head portion of the post latch in a direction away from the forward edge portion.
  • a container molded of fibrous pulp material as in claim 3 including a second post latch on one of the container halves and a second locking aperture in the side wall portion of the other container half arranged to receive the second post latch when the container is closed.
  • each post latch is on the lower half of the container and the lower half includes a plurality of article-receiving pockets.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Packaging Frangible Articles (AREA)
  • Paper (AREA)
  • Packages (AREA)
  • Closures For Containers (AREA)
US704592A 1967-03-08 1968-02-12 Locking means for carton covers Expired - Lifetime US3459360A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR97987A FR1521569A (fr) 1967-03-08 1967-03-08 Perfectionnement à la fermeture des emballages en fibres moulées notamment des boîtes à oeufs
US70459268A 1968-02-12 1968-02-12

Publications (1)

Publication Number Publication Date
US3459360A true US3459360A (en) 1969-08-05

Family

ID=26174897

Family Applications (1)

Application Number Title Priority Date Filing Date
US704592A Expired - Lifetime US3459360A (en) 1967-03-08 1968-02-12 Locking means for carton covers

Country Status (15)

Country Link
US (1) US3459360A (enrdf_load_stackoverflow)
JP (1) JPS499057B1 (enrdf_load_stackoverflow)
BE (1) BE711953A (enrdf_load_stackoverflow)
CH (1) CH466990A (enrdf_load_stackoverflow)
DE (1) DE1611944C2 (enrdf_load_stackoverflow)
DK (1) DK124939B (enrdf_load_stackoverflow)
ES (1) ES148809Y (enrdf_load_stackoverflow)
FI (1) FI47074C (enrdf_load_stackoverflow)
FR (1) FR1521569A (enrdf_load_stackoverflow)
GB (1) GB1173545A (enrdf_load_stackoverflow)
IL (1) IL29608A (enrdf_load_stackoverflow)
LU (1) LU55637A1 (enrdf_load_stackoverflow)
NL (2) NL6803298A (enrdf_load_stackoverflow)
NO (1) NO123171B (enrdf_load_stackoverflow)
SE (1) SE356947B (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3531044A (en) * 1969-03-17 1970-09-29 Theodore C Baker Combined paperboard and plastic egg carton with self-locking cover
US3572578A (en) * 1969-04-08 1971-03-30 Packaging Ind Inc Carton latch construction
US3735917A (en) * 1971-04-27 1973-05-29 Mobil Oil Egg carton construction
JPS5393326U (enrdf_load_stackoverflow) * 1971-02-22 1978-07-29
US4383638A (en) * 1981-09-29 1983-05-17 Diamond International Corporation Carton lock
US4582248A (en) * 1982-10-22 1986-04-15 Packaging Corporation Of America Upwardly molded locking flange on carton
WO1991017932A1 (en) * 1990-05-22 1991-11-28 Earthright Packaging Products, Inc. Biodegradable cushioned packaging composition
US5092479A (en) * 1989-12-14 1992-03-03 Oscar Mayer Foods Corporation Rigid one-piece merchandising container
US5096084A (en) * 1990-12-28 1992-03-17 Oscar Mayer Foods Corporation Two-piece merchandising container
US5131551A (en) * 1989-12-14 1992-07-21 Oscar Mayer Foods Corporation One-piece merchandising container
WO2009090141A1 (en) * 2008-01-15 2009-07-23 Paolo Ciraudo Container for food, particularly for eggs and the like
RU236104U1 (ru) * 2025-03-19 2025-07-28 Игорь Алексеевич Золотов Упаковка для яиц

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2361797C1 (ru) * 2007-10-18 2009-07-20 Общество с ограниченной ответственностью "Научно-производственная Компания "РАНКО" Формованная тара для яиц из макулатуры
DE102022104645A1 (de) 2022-02-25 2023-08-31 PAPACKS SALES GmbH Behältnis mit wiederverschließbarem Deckel
WO2025040233A1 (de) 2023-08-18 2025-02-27 PAPACKS SALES GmbH Faserstoff-behältnis mit deckel

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2873057A (en) * 1955-03-29 1959-02-10 Paper Maid Inc Container with cover lock
US2974842A (en) * 1958-05-13 1961-03-14 Diamond National Corp Egg carton
US3217963A (en) * 1963-09-30 1965-11-16 Molded Container Corp Molded pulp carton with latch post closure
US3258186A (en) * 1964-04-13 1966-06-28 A & E Plastik Pak Co Container with cam-latching top
US3276656A (en) * 1963-11-13 1966-10-04 Hartmann As Brdr Package of resilient material for fragile objects
US3372854A (en) * 1967-07-27 1968-03-12 Dow Chemical Co Latch arrangement for egg cartons
US3391845A (en) * 1967-09-06 1968-07-09 Packaging Corp America Carton construction

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2873057A (en) * 1955-03-29 1959-02-10 Paper Maid Inc Container with cover lock
US2974842A (en) * 1958-05-13 1961-03-14 Diamond National Corp Egg carton
US3217963A (en) * 1963-09-30 1965-11-16 Molded Container Corp Molded pulp carton with latch post closure
US3276656A (en) * 1963-11-13 1966-10-04 Hartmann As Brdr Package of resilient material for fragile objects
US3258186A (en) * 1964-04-13 1966-06-28 A & E Plastik Pak Co Container with cam-latching top
US3372854A (en) * 1967-07-27 1968-03-12 Dow Chemical Co Latch arrangement for egg cartons
US3391845A (en) * 1967-09-06 1968-07-09 Packaging Corp America Carton construction

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3531044A (en) * 1969-03-17 1970-09-29 Theodore C Baker Combined paperboard and plastic egg carton with self-locking cover
US3572578A (en) * 1969-04-08 1971-03-30 Packaging Ind Inc Carton latch construction
JPS5393326U (enrdf_load_stackoverflow) * 1971-02-22 1978-07-29
US3735917A (en) * 1971-04-27 1973-05-29 Mobil Oil Egg carton construction
US4383638A (en) * 1981-09-29 1983-05-17 Diamond International Corporation Carton lock
DE3235879A1 (de) * 1981-09-29 1983-05-26 Diamond International Corp., 10017 New York, N.Y. Verschluss fuer eine giessgeformte schachtel
US4582248A (en) * 1982-10-22 1986-04-15 Packaging Corporation Of America Upwardly molded locking flange on carton
US5092479A (en) * 1989-12-14 1992-03-03 Oscar Mayer Foods Corporation Rigid one-piece merchandising container
US5131551A (en) * 1989-12-14 1992-07-21 Oscar Mayer Foods Corporation One-piece merchandising container
WO1991017932A1 (en) * 1990-05-22 1991-11-28 Earthright Packaging Products, Inc. Biodegradable cushioned packaging composition
US5096084A (en) * 1990-12-28 1992-03-17 Oscar Mayer Foods Corporation Two-piece merchandising container
WO2009090141A1 (en) * 2008-01-15 2009-07-23 Paolo Ciraudo Container for food, particularly for eggs and the like
RU236104U1 (ru) * 2025-03-19 2025-07-28 Игорь Алексеевич Золотов Упаковка для яиц

Also Published As

Publication number Publication date
ES148809Y (es) 1970-11-16
ES148809U (es) 1969-11-01
GB1173545A (en) 1969-12-10
SE356947B (enrdf_load_stackoverflow) 1973-06-12
BE711953A (enrdf_load_stackoverflow) 1968-07-15
DE1611944C2 (de) 1974-10-10
NL130494C (enrdf_load_stackoverflow)
FI47074B (enrdf_load_stackoverflow) 1973-05-31
DK124939B (da) 1972-12-11
LU55637A1 (enrdf_load_stackoverflow) 1968-07-15
NO123171B (enrdf_load_stackoverflow) 1971-10-04
IL29608A (en) 1971-08-25
JPS499057B1 (enrdf_load_stackoverflow) 1974-03-01
DE1611944B1 (de) 1974-03-14
FR1521569A (fr) 1968-04-19
FI47074C (fi) 1973-09-10
NL6803298A (enrdf_load_stackoverflow) 1968-09-09
CH466990A (de) 1968-12-31

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