US3337110A - Egg carton construction - Google Patents

Egg carton construction Download PDF

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Publication number
US3337110A
US3337110A US541327A US54132766A US3337110A US 3337110 A US3337110 A US 3337110A US 541327 A US541327 A US 541327A US 54132766 A US54132766 A US 54132766A US 3337110 A US3337110 A US 3337110A
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US
United States
Prior art keywords
carton
section
longitudinal
cells
rows
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
US541327A
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English (en)
Inventor
Nicholas D Commisso
Lake Connie
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.)
Mobil Oil AS
Original Assignee
Mobil Oil AS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mobil Oil AS filed Critical Mobil Oil AS
Priority to US541327A priority Critical patent/US3337110A/en
Priority to DE19671586791 priority patent/DE1586791B2/de
Priority to BE696805D priority patent/BE696805A/xx
Priority to GB16014/67A priority patent/GB1126011A/en
Application granted granted Critical
Publication of US3337110A publication Critical patent/US3337110A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the molded egg carton structures contemplated in accordance with the present invention comprises a top or cover section and a bottom cellular section.
  • the bottom cellular section is provided with a plurality of egg receiving cells. These cells are arranged in parallel rows and although the number of cells and rows may vary, this section consists preferably of a dozen cells arranged in two parallel rows of six cells each as illustrated in the attached drawings.
  • thermoplastic foam such as, for example, foam polystyrene, although other polymers such as polyethylene, polypropylene, polyvinyl chloride and the like are also useful.
  • foam polystyrene although other polymers such as polyethylene, polypropylene, polyvinyl chloride and the like are also useful.
  • cellular egg receiving sections do not afford sufiicient protection to the eggs packed in the container in that the container is liable to become bent or distorted during shipment and handling, frequently resulting in breakage to the eggs packed therein. Attempts to remedy this situation have met with partial success.
  • the cellular bottom sections of some cartons have been reinforced by providing a continuous series of integrally molded, hollow, external ribs, interconnecting adjacent pairs of cells contained in each of the longitudinal extending rows of cells as well as having similar ribs connecting each pair of transversely arranged cells.
  • Such a locking arrangement will necessitate that compressive (front to back) forces be applied to the bottom section in a direction perpendicular to the longitudinally extending rows of cells to inwardly depress the locking flange when the carton sections are being locked and again when they are reopened.
  • Such compressive forces have a definite tendency to deform and distort the cells of the bottom section unless these cells are provided with interconnecting reinforcing ribs.
  • Certain alternate types of carton locking arrangements result in forces being applied to the cellular bottom sections in other directions while the carton is being locked and unlocked.
  • certain egg carton locking arrangements require that not only compressive forces be applied to the bottom cellular section when the egg carton is being closed and reopened, but also forces in a direction parallel to the longitudinally-extending cell rows.
  • Such a locking arrangement requires that the individual cells be somehow reinforced to resist deformation in a direction parallel with the longitudinally extending cell rows. It has been found that when each cell in the longitudinal row is interconnected to each adjacent cell in the same row with a reinforcing rib of the type as aforediscussed, the longitudinal cell rows will not effectively resist deformation as a result of forces applied in a direction parallel to the cell rows.
  • the weight of the eggs contained in the unsupported portion of the bottom carton section will tend to result in buckling of the bottom section.
  • an egg carton structure which comprises a bottom cellular section constructed in such a manner as to effectively resist cell deformation when forces are applied to the bottom cellular carton section in a direction substantially parallel to the longitudinal rows of egg receiving cells contained therein.
  • the bottom cellular carton construction of the present invention will also effectively resist compressive forces normally applied to such structures as well as forces applied to the cellular bottom section which are in a direction perpendicular to the plane of said bottom section.
  • FIGURE 1 is a top plan View of the molded carton of the present invention in an open position.
  • FIGURE 2 is a bottom plan view of the molded carton of the present invention in an open position.
  • FIGURE 3 is a view in transverse vertical section of the open carton along the line corresponding to line 3-3 of FIGURE 1.
  • FIGURE 4 is a view in transverse vertical section of the open carton along the line corresponding to line 44 of FIGURE 1.
  • FIGURE 5 is a view in transverse vertical section of the open carton along the line corresponding to line 5 -5 of FIGURE 1.
  • FIGURE 6 is a front elevational view of the carton in section showing the relationship of the carton locking means as the carton sections are being drawn into closed relationship.
  • FIGURE 7 is a front elevational view of the carton in section when the carton sections are in a closed position.
  • FIGURES 8 and 9 are fragmentary views in vertical sections along lines 8-8 and 9-9, respectively, of FIG- URE 7.
  • FIGURE 10 is an end-elevational view of the carton taken along line 10-10 of FIGURE 7.
  • FIGURE 11 is a fragmentary view on horizontal section along line 1111 of FIGURE 9.
  • the carton construction of the present invention comprises a cover section 11 and a bottom cellular section 12 integrally connected along a common longitudinal margin by an integral hinge member 13.
  • the cover section 11 comprises a generally rectangular, planar top portion 14 and four wall members integrally formed therewith and comprising side wall members 15 and 16 respectively and end wall members 17 and 18.
  • the side and end walls members 15-18 of cover section Ill depend downwardly from top portion 14 and in the embodiment illustrated, flare outwardly at a slight angle to the vertical.
  • the lower longitudinal edge of side wall member 15 is integrally connected with hinge member 13 which secures cover section 11 and bottom cellular section 12 in hinged relationship.
  • Hinge 19 connects the lower longitudinal edge of side wall 16 with cover section locking flange 20, molded integrally along hinge 19 with the lower front edge of cover section wall 16.
  • Locking flange 20 may be integrally molded in flat position extending outwardly substantially perpendicular to cover section 11, as illustrated in FIGURE 1, and is adapted to be rotated inwardly of said cover section to a position adjacent the inner surface of cover section wall 16 when the carton sections are in closed relationship.
  • the surface of cover locking flange 20 is provided with a series of wedge shaped projections 21 disposed at locations substantially intermediate pairs of adjacent cells in bottom section 12 when said carton sections are in closed relationship.
  • Cellular bottom section 12 comprises a series of egg receiving cells 22 arranged in two parallel longitudinal rows, each row comprising three pairs of cells. Intermediate cells 22 are arranged a series of hollow, substantially pyramidal shaped, upstanding post members 33, certain of the side portions of said posts forming portions of the egg receiving cells 22. Cells 22 are interconnected by a series of external transverse reinforcing ribs 23 which connect each adjacent pair of cells of the longitudinal rows and extend transversely of said longitudinal cell rows as illustrated in FIGURE 2. EX- ternal reinforcing ribs 24 interconnect alternate pairs of longitudinally aligned cells, extending intermediate pairs of cells in said longitudinal rows.
  • ribs 24 are arranged so that the ribs interconnecting alternate pairs of cells in one longitudinal row are staggered with respect to ribs 24 interconnecting alternate pairs of cells in the adjacent longitudinal row. It has been found that by only connecting alternate cell pairs in each longitudinal cell row and by staggering said connections so that each pair of unconnected cells in one of the longitudinal cell rows is opposite a connected pair in the adjacent row, such a structure will withstand deformation when normal handling forces are applied thereto, particularly when such forces are in a direction parallel to the direction of the longitudinal cell rows.
  • Such a feature is highly desirable in egg cartons and especially so when the particular carton locking arrangement employed is such that when the carton latching mechanism is being opened and again reclosed the requisite opening and closing forces are, as a result of the locking mechanism design, necessarily in a direction parallel to the longitudinal cell rows.
  • internal reinforcing ribs 2 are positioned transversely of said two longitudinally extending cell rows, intermediate cells 22, and in a discontinuous or staggered arrangement whereby transverse ribs 2 interconnect internal hollow post members 33 on alternating sides of each consecutive post, with the walls of cellular bottom section 12, as more clearly illustrated in FIGURES 3, 4 and 5.
  • Internal ribs 24 function primarily to resist normally encountered compressive forces applied to bottom cellular section 12 during handling of the carton, i.e., opening and closing thereof, for example.
  • interconnecting ribs as described above will resist opening and closing forces which are applied to the carton in a manner far superior to ordinary carton constructions employing continuous interconnecting cell ribs, i.e., interconnecting all of the individual cells in the longitudinal rows and/or positioning the reinforcing ribs so that they all are located either interiorly or exteriorly of the bottom cellular section.
  • bottom section locking flange 26 which extends substantially the entire length of bottom cellular section 12.
  • Locking flange 26 may be integrally molded in a flat position extending outwardly, substantially perpendicular to bottom section 12, and is adapted to be rotated about hinge 25 to a substantially vertical position, to be located inside the front wall of cover section II when the carton sections are in closed relationship.
  • the surface of bottom locking flange 26 is provided with a series of longitudinally spaced, wedge shaped recesses 27 disposed at locations substantially intermediate pairs of adjacent cells contained in bottom section 12.
  • the wedge shaped recesses conform in shape to the wedge shaped projections 21 carried on the surface of cover locking flange 20 and are adapted to receive said projections in interlocking, mated relationship when said cover sections are in a closed relationship. It will be noted from FIGURE 2 that the terminal and in this instance the wide or base portions of wedge shaped recesses 27 are located slightly below the leading edge 28 of bottom locking flange 26 whereby a series of locking detents 29 are provided along the upper portion of flange 26.
  • bottom locking flange 26 is rotated about hinge 25, from its normal horizontal position to an upstanding or vertical position as illustrated by the dotted lines in FIGURE 3. Subsequently cover section 11 is rotated about hinge 13 towards closing relationship with bottom cellular section 12. Simultaneously, cover locking flange 20 is rotated about integral hinge 19 to a position adjacent the inside surface of cover section wall 16.
  • wedge shaped projections 21 When it is desired to open the carton, wedge shaped projections 21 must be disengaged from correspondingly wedge shaped recesses 27 molded on the surface of flange 26. This may be readily accomplished by exerting a slight upward and outward pressure against the exposed surface of longitudinal hinge 19 while grasping the cartons cellular bottom section 12. As illustrated by the dotted lines in FIGURE 9, this results in the leading edge of top locking flange 20 pivoting about the points of engagement of wedge projections 21 with wedge recesses 27, viz, at detents 29 carried on the leading edge of bottom locking flange 26, resulting in disengagement of the locking flanges as the carton sections rotate about hinge 13 to an open position. The movement of top locking flange 20 during opening of the carton sections is illustrated by the dotted lines in FIGURE 9.
  • cover section side walls 15, 16, 17 and 18 respectively are of scalloped shape, featuring longitudinally spaced outwardly curved or recessed bays 30 formed by frusto-conical sectional surfaces molded in the side walls of the cover section 11 to increase the egg room in the cover section above egg cells 22 of the bottom section.
  • a molded carton structure comprising a cover section and a bottom cellular section, said cover section including a planar top wall and integrally molded side walls, said bottom cellular section comprising a multiplicity of article receiving cells arranged in two longitudinal rows, external transverse reinforcing ribs connecting each cell in one of said longitudinal rows with each adjacent cell of said other longitudinal row, external longitudinal reinforcing ribs interconnecting individual cells of each alternate cell pair in one of said longitudinal rows, and external longitudinal reinforcing ribs interconnecting only each of the individual alternate cell pairs in said other longitudinal row, said external longitudinal reinforcing rib in one of said longitudinal rows alternating with said longitudinal reinforcing rib in said other longitudinal row.
  • a molded carton structure in accordance with claim 1 which is formed of foam polystyrene.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
  • Packaging Frangible Articles (AREA)
US541327A 1966-04-08 1966-04-08 Egg carton construction Expired - Lifetime US3337110A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US541327A US3337110A (en) 1966-04-08 1966-04-08 Egg carton construction
DE19671586791 DE1586791B2 (de) 1966-04-08 1967-04-01 Geformter karton, insbesondere eierkarton
BE696805D BE696805A (cs) 1966-04-08 1967-04-07
GB16014/67A GB1126011A (en) 1966-04-08 1967-04-07 Moulded carton structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US541327A US3337110A (en) 1966-04-08 1966-04-08 Egg carton construction

Publications (1)

Publication Number Publication Date
US3337110A true US3337110A (en) 1967-08-22

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US541327A Expired - Lifetime US3337110A (en) 1966-04-08 1966-04-08 Egg carton construction

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US (1) US3337110A (cs)
BE (1) BE696805A (cs)
DE (1) DE1586791B2 (cs)
GB (1) GB1126011A (cs)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3465947A (en) * 1967-03-08 1969-09-09 British Petroleum Co Containers
US3501083A (en) * 1968-02-19 1970-03-17 Mobil Oil Corp Egg carton construction
US3563446A (en) * 1969-06-12 1971-02-16 Mobil Oil Corp Molded egg carton structure
US3563450A (en) * 1969-01-02 1971-02-16 Kurt G Dahlberg Molded egg carton
US3580479A (en) * 1966-08-29 1971-05-25 Continental Can Co Molded pulp egg carton
US3601306A (en) * 1969-07-15 1971-08-24 Sinclair Koppers Co Locking mechanism for egg cartons
US3633785A (en) * 1969-08-25 1972-01-11 Standard Oil Co Hot food container
US3648916A (en) * 1970-02-27 1972-03-14 Mobil Oil Corp Carton
USB537990I5 (cs) * 1975-01-02 1976-01-13
US3989154A (en) * 1973-09-07 1976-11-02 Mcneil Corporation Stackable and nestable tray for shipping and displaying articles
US4625905A (en) * 1983-04-01 1986-12-02 Mobil Oil Corporation Hinged cover carton
US4742953A (en) * 1983-04-01 1988-05-10 Mobil Oil Corporation Hinged cover carton with inboard locking extensions
US6276531B1 (en) 2000-03-01 2001-08-21 Pactiv Corporation Molded fiber nestable egg tray packaging system
US20100147730A1 (en) * 2008-12-15 2010-06-17 Germain Archambault Stacking configuration for container for frangible items
CN102862748A (zh) * 2012-09-20 2013-01-09 浙江长诚包装建材有限公司 一种抗压纸浆模塑蛋盒
WO2019164908A1 (en) 2018-02-26 2019-08-29 Pauwels David Methods for preparing cannabis hurd fiber, purified cannabis hurd fiber, and articles containing the purified cannabis hurd fiber

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4394214A (en) * 1981-09-29 1983-07-19 Diamond International Corporation Construction of universal egg cell cushion and method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2369390A (en) * 1942-07-21 1945-02-13 Nat Folding Box Co Hinged cover container
US2971685A (en) * 1957-05-03 1961-02-14 Kingston Products Corp Molded carton for ragile articles
US3093286A (en) * 1961-01-24 1963-06-11 Mead Corp Molded foamed plastic egg carton
US3131846A (en) * 1959-11-10 1964-05-05 Poly Pak Corp Of America Hermetically sealed, transparent, shock absorbing package for fragile articles
US3138314A (en) * 1963-02-14 1964-06-23 Diamond National Corp Carton
US3176899A (en) * 1963-08-23 1965-04-06 Red Owl Stores Inc Egg carton
US3223306A (en) * 1964-04-20 1965-12-14 Eugene M Alsman Carton with dual locking flaps

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2369390A (en) * 1942-07-21 1945-02-13 Nat Folding Box Co Hinged cover container
US2971685A (en) * 1957-05-03 1961-02-14 Kingston Products Corp Molded carton for ragile articles
US3131846A (en) * 1959-11-10 1964-05-05 Poly Pak Corp Of America Hermetically sealed, transparent, shock absorbing package for fragile articles
US3093286A (en) * 1961-01-24 1963-06-11 Mead Corp Molded foamed plastic egg carton
US3138314A (en) * 1963-02-14 1964-06-23 Diamond National Corp Carton
US3176899A (en) * 1963-08-23 1965-04-06 Red Owl Stores Inc Egg carton
US3223306A (en) * 1964-04-20 1965-12-14 Eugene M Alsman Carton with dual locking flaps

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3580479A (en) * 1966-08-29 1971-05-25 Continental Can Co Molded pulp egg carton
US3465947A (en) * 1967-03-08 1969-09-09 British Petroleum Co Containers
US3501083A (en) * 1968-02-19 1970-03-17 Mobil Oil Corp Egg carton construction
US3563450A (en) * 1969-01-02 1971-02-16 Kurt G Dahlberg Molded egg carton
US3563446A (en) * 1969-06-12 1971-02-16 Mobil Oil Corp Molded egg carton structure
FR2050165A5 (cs) * 1969-06-12 1971-03-26 Mobil Oil Corp
US3601306A (en) * 1969-07-15 1971-08-24 Sinclair Koppers Co Locking mechanism for egg cartons
US3633785A (en) * 1969-08-25 1972-01-11 Standard Oil Co Hot food container
US3648916A (en) * 1970-02-27 1972-03-14 Mobil Oil Corp Carton
US3989154A (en) * 1973-09-07 1976-11-02 Mcneil Corporation Stackable and nestable tray for shipping and displaying articles
USB537990I5 (cs) * 1975-01-02 1976-01-13
US4057651A (en) * 1975-01-02 1977-11-08 Mobil Oil Corporation Meat tray
US4625905A (en) * 1983-04-01 1986-12-02 Mobil Oil Corporation Hinged cover carton
US4742953A (en) * 1983-04-01 1988-05-10 Mobil Oil Corporation Hinged cover carton with inboard locking extensions
US6276531B1 (en) 2000-03-01 2001-08-21 Pactiv Corporation Molded fiber nestable egg tray packaging system
US20100147730A1 (en) * 2008-12-15 2010-06-17 Germain Archambault Stacking configuration for container for frangible items
US8844721B2 (en) * 2008-12-15 2014-09-30 Pactiv Canada Inc. Stacking configuration for container for frangible items
US9266665B2 (en) 2008-12-15 2016-02-23 Pactiv Canada Inc. Hinge configuration for container for frangible items
CN102862748A (zh) * 2012-09-20 2013-01-09 浙江长诚包装建材有限公司 一种抗压纸浆模塑蛋盒
WO2019164908A1 (en) 2018-02-26 2019-08-29 Pauwels David Methods for preparing cannabis hurd fiber, purified cannabis hurd fiber, and articles containing the purified cannabis hurd fiber
US10947668B2 (en) 2018-02-26 2021-03-16 David Pauwels Methods for preparing cannabis hurd fiber, purified cannabis hurd fiber, and articles containing the purified cannabis hurd fiber
US12188180B2 (en) 2018-02-26 2025-01-07 David Pauwels Purified medicinal cannabis non-hemp hurd fiber, and articles containing the same

Also Published As

Publication number Publication date
BE696805A (cs) 1967-09-18
GB1126011A (en) 1968-09-05
DE1586791A1 (de) 1970-08-06
DE1586791B2 (de) 1976-11-04

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