US3443717A - Plastic crate structure with lattice-work bottom - Google Patents

Plastic crate structure with lattice-work bottom Download PDF

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Publication number
US3443717A
US3443717A US636961A US3443717DA US3443717A US 3443717 A US3443717 A US 3443717A US 636961 A US636961 A US 636961A US 3443717D A US3443717D A US 3443717DA US 3443717 A US3443717 A US 3443717A
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US
United States
Prior art keywords
lattice
crate
bars
rings
crate structure
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
US636961A
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English (en)
Inventor
Lars Malte Roland Wettlen
Curt Ingvar Christopherson
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.)
Tetra Pak AB
Original Assignee
Tetra Pak AB
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 Tetra Pak AB filed Critical Tetra Pak AB
Application granted granted Critical
Publication of US3443717A publication Critical patent/US3443717A/en
Anticipated expiration legal-status Critical
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    • 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—Rigid or semi-rigid 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 or by deep-drawing operations performed on sheet material
    • B65D1/40—Details of walls
    • 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—Rigid or semi-rigid 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 or by deep-drawing operations performed on sheet material
    • B65D1/22—Boxes or like containers with side walls of substantial depth for enclosing contents

Definitions

  • a crate structure includes a bottom moulded from plastic material and which is constituted by a lattice made up from a criss-cross network of diagonally extending bars which intersect one another at their mutual crossing points. Stress relieving rings are incorporated into some of the intersections between the bars to prevent deformation of the cratebottom in the event that initial stresses are developed in the bottom as a result of the moulding operation. The rings are arranged in mutually perpendicular rows along the bottom and are located at every other intersection along each of the diagonally extending bars.
  • the present invention refers to a lattice-work made from a plastic material by compression or injection moulding. More closely the invention relates to a crate, the bottom of which is made of such lattice-work.
  • a more particular object is to provide an improved crate structure in which the bottom of the crate is moulded from plastic material and constituted by a crisscross network of diagonally extending bars which intersect one another at their mutual crossing points.
  • Stress relieving rings are incorporated into some of the intersections between the bars to prevent deformation of the bottom in the event that initial stresses are developed in the bottom as a result of the moulding operation.
  • the rings are arranged in mutually perpendicular rows along the bottom and are located at every other intersection along each of the diagonally extending bars.
  • FIG. 1 is a perspective view of a crate upon which the invention has been applied.
  • FIG. 2 is a bottom view of the crate
  • FIG. 3 is a cross-sectional view of the crate along the line III-III in FIG. 2.
  • the crate as shown in FIG. 1 generally consists of two short side walls 1; two long side walls 2; and a bottom 3.
  • FIG. 2 more closely shows the design of the bottom 3. From the figure, in which the bottom is seen from below, it is apparent that the bottom has the shape of a lattice, i.e. a criss-cross network consisting of diagonally running bars. The bars run from below left up to the right, as the bars 4 and 4", and from below right up to the left, as the bars 5' and 5". Conventional intersecting structure between the two sets of diagonally extending bars, as for example the points where the bars 4 and 5' or 4" and 5" cross, are broadly denoted by numeral 6. In other intersections, however, rings 7 are structurally incorporated for the purpose of relieving stresses in the lattice.
  • a lattice i.e. a criss-cross network consisting of diagonally running bars.
  • the bars run from below left up to the right, as the bars 4 and 4", and from below right up to the left, as the bars 5' and 5".
  • Numeral 7a stands for a ring which join the bars 4" and 5'
  • 7b is a ring which connects the bars 4 and 5" with each other.
  • the rings 7 are arranged in mutually perpendicular rows and are located at every other intersection along each of the diagonally extending bars.
  • Some of the rings are completely filled with plastic. These completely filled rings, as the ring 8, define the injection points for the plastic material.
  • the rings 7 function as stress-absorbers in that they can be compressed as well as expanded. If the stresses are symmetrical the rings 7 in both the cases will tend to assume a square shape.
  • a crate structure including a bottom moulded from plastic material, said bottom being constituted by a crisscross network of diagonally extending bars which intersect one another at their mutual crossing points, and stressrelieving rings incorporated into some of the said intersections between said bars to prevent deformation of the bottom in the event that initial stresses are developed therein as a result of the moulding operation.

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Packages (AREA)
US636961A 1966-05-09 1967-05-08 Plastic crate structure with lattice-work bottom Expired - Lifetime US3443717A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE634066 1966-05-09

Publications (1)

Publication Number Publication Date
US3443717A true US3443717A (en) 1969-05-13

Family

ID=20268427

Family Applications (1)

Application Number Title Priority Date Filing Date
US636961A Expired - Lifetime US3443717A (en) 1966-05-09 1967-05-08 Plastic crate structure with lattice-work bottom

Country Status (5)

Country Link
US (1) US3443717A (de)
CH (1) CH473710A (de)
DE (1) DE6608379U (de)
GB (1) GB1142663A (de)
NL (1) NL6705996A (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3727791A (en) * 1970-10-08 1973-04-17 Phillips Petroleum Co Tray
US4023680A (en) * 1971-09-22 1977-05-17 Dare Plastics Inc. Bakery tray
USD307716S (en) 1988-02-29 1990-05-08 Geo. A. Hormel & Co. Container
USD308487S (en) 1988-03-28 1990-06-12 Spin-Cast Plastics, Inc. Dock storage box
USD308486S (en) 1988-03-28 1990-06-12 Spin-Cast Plastics, Inc. Dock storage box
USD309106S (en) 1988-03-28 1990-07-10 Spin-Cast Plastics, Inc. Dock storage box
US5685452A (en) * 1992-10-21 1997-11-11 Perstorp Ab Container bottom with elevations made of a polymeric material and a process for production thereof
US6076697A (en) * 1997-06-09 2000-06-20 Allabaugh, Jr.; Robert Carleton Crate for cartons
US6703110B2 (en) 2002-01-28 2004-03-09 Rubbermaid Incorporated Non-skid surface for containers
USD1063378S1 (en) * 2024-08-23 2025-02-25 Ningbo Homelink Eco-Itech Co., Ltd. Storage box

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3014387A1 (de) * 1980-04-15 1981-10-22 Fritz Schäfer GmbH Fabriken für Lager- und Betriebseinrichtungen, Salchendorf bei Neunkirchen, Kreis Siegen, 5908 Neunkirchen Lager-sichtkasten
CA2229191C (en) * 1998-03-11 2001-03-06 Christopher M. Flink Ergonomic hand-held shopping basket

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2850153A (en) * 1955-04-15 1958-09-02 Ful Vuepak Company Disposable carton
CA659127A (en) * 1963-03-12 S. Levkoff Henry Plastic container
US3107026A (en) * 1959-11-13 1963-10-15 Novo Ind Corp Carrying case for soft drinks and the like
US3223280A (en) * 1964-07-29 1965-12-14 Amos Thompson Corp Molded beverage carrier

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA659127A (en) * 1963-03-12 S. Levkoff Henry Plastic container
US2850153A (en) * 1955-04-15 1958-09-02 Ful Vuepak Company Disposable carton
US3107026A (en) * 1959-11-13 1963-10-15 Novo Ind Corp Carrying case for soft drinks and the like
US3223280A (en) * 1964-07-29 1965-12-14 Amos Thompson Corp Molded beverage carrier

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3727791A (en) * 1970-10-08 1973-04-17 Phillips Petroleum Co Tray
US4023680A (en) * 1971-09-22 1977-05-17 Dare Plastics Inc. Bakery tray
USD307716S (en) 1988-02-29 1990-05-08 Geo. A. Hormel & Co. Container
USD308487S (en) 1988-03-28 1990-06-12 Spin-Cast Plastics, Inc. Dock storage box
USD308486S (en) 1988-03-28 1990-06-12 Spin-Cast Plastics, Inc. Dock storage box
USD309106S (en) 1988-03-28 1990-07-10 Spin-Cast Plastics, Inc. Dock storage box
US5685452A (en) * 1992-10-21 1997-11-11 Perstorp Ab Container bottom with elevations made of a polymeric material and a process for production thereof
US6076697A (en) * 1997-06-09 2000-06-20 Allabaugh, Jr.; Robert Carleton Crate for cartons
US6703110B2 (en) 2002-01-28 2004-03-09 Rubbermaid Incorporated Non-skid surface for containers
USD1063378S1 (en) * 2024-08-23 2025-02-25 Ningbo Homelink Eco-Itech Co., Ltd. Storage box

Also Published As

Publication number Publication date
NL6705996A (de) 1967-11-10
DE6608379U (de) 1971-08-26
CH473710A (de) 1969-06-15
GB1142663A (en) 1969-02-12

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