US3362576A - Plastic tote case and method of making same - Google Patents
Plastic tote case and method of making same Download PDFInfo
- Publication number
- US3362576A US3362576A US544326A US54432666A US3362576A US 3362576 A US3362576 A US 3362576A US 544326 A US544326 A US 544326A US 54432666 A US54432666 A US 54432666A US 3362576 A US3362576 A US 3362576A
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- United States
- Prior art keywords
- case
- bottom wall
- tote
- plastic
- extending
- 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
Links
- 239000004033 plastic Substances 0.000 title description 16
- 229920003023 plastic Polymers 0.000 title description 16
- 238000004519 manufacturing process Methods 0.000 title description 5
- 230000002093 peripheral effect Effects 0.000 description 16
- 239000000463 material Substances 0.000 description 9
- 238000010276 construction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 235000013365 dairy product Nutrition 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 229920005669 high impact polystyrene Polymers 0.000 description 1
- 239000004797 high-impact polystyrene Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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
- B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
- B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
- B65D21/0209—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together stackable or joined together one-upon-the-other in the upright or upside-down position
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0046—Details relating to the filling pattern or flow paths or flow characteristics of moulding material in the mould cavity
-
- 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
-
- 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
- B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
- B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
- B65D21/0209—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together stackable or joined together one-upon-the-other in the upright or upside-down position
- B65D21/0213—Containers presenting a continuous stacking profile along the upper or lower edge of at least two opposite side walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7134—Crates, e.g. for bottles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S220/00—Receptacles
- Y10S220/15—Plastic bottle crates
Definitions
- ABSTRACT OF THE DISCLOSURE A plastic tote casefor milk cartons and the like having a bottom wall and an upwardly extending sidewall, a stacking shoulder extending horizontally inwardly of the lower end of the sidewall to and exposing the lower peripheral edge of the bottom wall, and protuberances extending outwardly ofthe lower edge of the bottom wall.
- the protuberances extend outwardly a sufficient distance so as to snugly engage the inner surface of the top portion of the sidewall of a like tote case stacked directly therebelow to give additional rigidity to the stacked cases.
- This invention relates generally to tote cases and, more particularly, relates to tote cases particularly suited for handling products such as paperboard and plastic liquid containing packages, and to the method of making such cases.
- Prior plastic tote cases fail to provide satisfactory stacking of a plurality of such cases as well as fail to provide a case bottom structure having adequate drainage facilities and yet being of suflicient strength to endure harsh treatment.
- Another object of the present invention is to provide an improved plastic tote case which combines the advantageous features of adequate drainage and bottom strength.
- Yet another object of the present invention is to provide a plastic tote case having greatly improved stacking rigidity.
- Another object of the present invention is to provide a tote case having a novel internal corner construction designed for maximum strength and substantial elimination of interference with square containers being packed in the case.
- Yet another object of the present invention is to provide a bottom structure for a tote case which is of such a configuration that when it is formed, uniform controlled material distribution in parts can be had even though it be of a generally square or other rectangular configuration.
- the present invention thus resides in an improved plastic tote case having all the advantages of the prior cases plus improved stacking characteristics due to an offset shoulder and outwardly extending protuberances. Recessed internal corners are provided in the case which substantially prevent corner fitting of rectangularly shaped cartons. Also comprehended is an improved bottom construction which provides adequate drainage while retaining substantial strength. Co-extensive with the above is a method for forming the bottom construction which method provides for a uniform control of material distribution in the molding thereof.
- FIGURE 1 is a side View of a tote case constructed according to the principles of the subject invention, all sides being substantially alike;
- FIGURE 2 is a top plan View thereof
- FIGURE 3 is a bottom view thereof
- FIGURE 4 is an enlarged fragmentary section of two tote cases stacked together, the bottom of an upper tote case stacked upon the top of the lower tote case;
- FIGURE 5 is a bottom plan view of a modified form of tote case having an elongated rather than a square bottom configuration.
- Tote case or container 10 is illustrated in FIGURES 1-4 as having a substantially square bottom 11 with side walls 12 extending upwardly therefrom. It is best molded from a lightweight plastic material such as high impact polystyrene or rigid polyethylene, or of other plastic materials having like characteristics.
- the four side walls 12 of container 10 preferably have a corrugated cross-section formed by undulations 14 to provide increased stacking rigidity, improved control of warpage, minimal moisture condensation, and faster cool-down of the container and contents.
- undulations '14 have been found especially useful in thin Walled plastic cases. Corners 15, formed by adjacent side walls 12, are recessed so as to prevent a tight mated fit with corners of cartons, or the like, contained within tote case 10.
- each side wall 12 has hand opening 16 with a lip or raised flange 18 around the periphery thereof to provide a reinforced grip.
- Formed around the upper periphery of each side Wall is a thickened portion 20 which concludes in downwardly extending corner portions 22, the latter containing holes 24 which can be engaged by hooks or the like when the cases are moved by heavy equipment.
- each side wall 12 merges into bottom 28 by way of a recessed stacking shoulder portion 26 which gives a generally flat vertical surface or lower peripheral bottom edge 30 with bumps or rounded tapered prot-urberances 32 located in spaced relationship therealong, as best seen in FIGS. 1 and 4.
- Protuberances 32 act as spacers juxtapositionable with the inner surface 34 about the top of a stacked tote case of a similar configuration.
- protuberances 32 extend from the surface 30 a distance so as to snugly engage inner surface 34 to give added rigidity to the stacked cases. It can readily be seen that shoulder 26 rests upon the upper peripheral edge 36 of the case therebelow.
- FIGURE 3 especially shows that the bottom 18 of tote case 10 is formed about a pluraltiy of cut-outs 38 which provide the improved drainage capabilities of the case, both when it holds containers and when it is in a plant, such as a dairy, being cleaned.
- the cut-outs 38 are defined by crossed planar portion 40 which is in turn reinforced downwardly extending ridges 42 along approximately all of its surface.
- the T-shaped cross section construction formed by planar portion 40 and downwardly extending rib 42 give improved rigidity.
- Cut-outs 38 are generally in the form of parallograms except about the periphery of the bottom where they are in the form of triangles approximately one-half the size of the parallelograms.
- the crosses formed by planar portion 40 comprise at least linear diagonals extending generally across said bottom wall between opposite corners thereof.
- plastic material is injected into a mold in equal di- 3 rections from the center of the bottom through a gate (not shown).
- the location of the gate is defined in FIG- URE 3 by central aperture 44 which is surrounded by thickened peripheral flange 46.
- plastic flows from the center portion, under pressure, in a flow pattern substantially as defined by surfaces 40 and ribs 42., which pattern makes the distance from the orifice of the gate to peripheral points around the sides, such as 48, 50, 52, etc., the same.
- the distance through which the material must flow i.e. from the gate to the corners or the side walls, is the same in every instance.
- Such uniform controlled material distribution in molded cases having square or rectangular bases eliminates the prior problems caused by warping, poor weld lines, packing stress, and all the other inherent characteristics in prior art designs.
- FIGURE 5 That an elongated rectangular base for a tote case can likewise have uniform material distribution when molded through a central gate is illustrated by FIGURE 5.
- the flow distance from central aperture 54 of case 56 to the corners, such as corner 58 is the same as the flow distance to any point on the sides, such as to points 60 or 62, the distance being defined by ribs 64.
- Ribs 64 in this instance define cut-outs 66 in the shape of parallelograms about the center and triangles about the periphery of the bottom.
- a tote case comprising a box-like structure having a bottom wall, upwardly extending sidewalls surrounding said bottom wall, a stacking shoulder extending generally horizontally inwardly of said sidewalls and exposing the lower peripheral edge of said bottom Wall, said lower peripheral edge of the bottom wall being dimensionally less than the upper inner extent of said sidewalls, protuberances extending outwardly of said lower peripheral edge of the bottom wall, said protuberances acting as spacers juxtapositional with the upper inner extent of the sidewalls of a like tote case stacked therebelow.
- a tote case comprising a box-like structure having a bottom wall, upwardly extending sidewalls surrounding said bottom wall, a stacking shoulder extending generally horizontally inwardly of said sidewall and exposing the lower peripheral edge of said bottom wall, said lower peripherel edge of the bottom wall being dimensionally less than the upper inner extent of said sidewalls, protuberances extending outwardly of the lower peripheral edge of said bottom wall, said protuberances being tapered upwardly and outwardly and extending a distance at their upper portion sufficient to snugly engage the inner surface of the top portion of the sidewalls of a like tote case stacked directly therebelow.
- a tote case comprising a box-like structure having a bottom wall, upwardly extending sidewalls surrounding said bottom wall, a stacking shoulder extending generally horizontally inwardly of said sidewall and exposing the lower peripheral edge of said bottom wall, said lower peripheral edge of the bottom wall being dimensionally less than the upper inner extent of said sidewall, protuberances extending outwardly of the lower peripheral edge of said bottom wall, the lateral extent of said bottom wall with protuberances being approximately the same as the lateral extent between the inside surface of opposite sidewalls about the top of said case.
- a tote case comprising a box-like structure having a bottom wall, upwardly extending sidewalls surrounding said bottom wall, a stacking shoulder extending generally horizontally inwardly of said sidewall and exposing the lower peripheral edge of said bottom wall, said lower peripheral edge of the bottom wall being dimensionally less than the upper extent of said sidewalls, protuberances extending outwardly of the lower peripheral edge of said bottom wall, said bottom wall comprising a planar portion having a plurality of cutouts therein, said cut-outs defining triangles about the periphery of said bottom wall and parallelograms approximately twice the area of said triangles about the rest of said bottom wall, the planar portion comprising at least linear diagonals extending generally across said bottom wall between opposite corners thereof, said diagonals at their crossing defining at least one aperture, and reinforcing rib means extending downwardly from said planar portion.
Description
1968 R. L. BEESLEY ETAL PLASTIC TOTE CASE AND METHOD OF MAKING SAME Original Filed Jan. 6, 1964 2 Shets-Sheet 1 m, mi n HM ii Aobr/ L. flees/e John W M/ghfon BY Rudolph Maff/w'as mwxm TNVENTORS. I
Jan. 9; 1968 R. L. BEESLEY E'II'AL 3,362,576
PLASTIC TOTE CASE AND METHOD OF MAKING SAME Original Filed Jan. 6, 1964 United States Patent PLASTIC TOTE CASE AND METHOD OF MAKING SAME Robert L. Beesley, Saginaw, John W. Mighton, Midland, and Rudolph H. Matthias, Saginaw, Mich., assignors to The Dow Chemical Company, Midland, Mich., a corporation of Delaware Original application Jan. 6, 1964, Ser. No. 335,739. D1-
vided and this application Feb. 23, 1966, Ser. No.
4 Claims. (Cl. 220-97) ABSTRACT OF THE DISCLOSURE A plastic tote casefor milk cartons and the like having a bottom wall and an upwardly extending sidewall, a stacking shoulder extending horizontally inwardly of the lower end of the sidewall to and exposing the lower peripheral edge of the bottom wall, and protuberances extending outwardly ofthe lower edge of the bottom wall. Beneficially, the protuberances extend outwardly a sufficient distance so as to snugly engage the inner surface of the top portion of the sidewall of a like tote case stacked directly therebelow to give additional rigidity to the stacked cases.
This application is a division of application Ser. No. 335,739, filed Jan. 6, 1964.
This invention relates generally to tote cases and, more particularly, relates to tote cases particularly suited for handling products such as paperboard and plastic liquid containing packages, and to the method of making such cases.
Prior plastic tote cases fail to provide satisfactory stacking of a plurality of such cases as well as fail to provide a case bottom structure having adequate drainage facilities and yet being of suflicient strength to endure harsh treatment.
Accordingly, it is an object of the present invention to provide an improved plastic tote case for handling and storing containers.
Another object of the present invention is to provide an improved plastic tote case which combines the advantageous features of adequate drainage and bottom strength.
Yet another object of the present invention is to provide a plastic tote case having greatly improved stacking rigidity.
Another object of the present invention is to provide a tote case having a novel internal corner construction designed for maximum strength and substantial elimination of interference with square containers being packed in the case.
Yet another object of the present invention is to provide a bottom structure for a tote case which is of such a configuration that when it is formed, uniform controlled material distribution in parts can be had even though it be of a generally square or other rectangular configuration.
Briefly then, the present invention thus resides in an improved plastic tote case having all the advantages of the prior cases plus improved stacking characteristics due to an offset shoulder and outwardly extending protuberances. Recessed internal corners are provided in the case which substantially prevent corner fitting of rectangularly shaped cartons. Also comprehended is an improved bottom construction which provides adequate drainage while retaining substantial strength. Co-extensive with the above is a method for forming the bottom construction which method provides for a uniform control of material distribution in the molding thereof.
Yet additional objects and advantages of the present invention, and its numerous cognate benefits and features are even more apparent and manifest in and by the ensuing description and specification taken in conjunction with the accompanying drawing in which, wheresoever possible, like charcaters of reference designate corresponding material and parts throughout the several views thereof, in which:
FIGURE 1 is a side View of a tote case constructed according to the principles of the subject invention, all sides being substantially alike;
FIGURE 2 is a top plan View thereof;
FIGURE 3 is a bottom view thereof;
FIGURE 4 is an enlarged fragmentary section of two tote cases stacked together, the bottom of an upper tote case stacked upon the top of the lower tote case; and
FIGURE 5 is a bottom plan view of a modified form of tote case having an elongated rather than a square bottom configuration.
Tote case or container 10 is illustrated in FIGURES 1-4 as having a substantially square bottom 11 with side walls 12 extending upwardly therefrom. It is best molded from a lightweight plastic material such as high impact polystyrene or rigid polyethylene, or of other plastic materials having like characteristics. The four side walls 12 of container 10 preferably have a corrugated cross-section formed by undulations 14 to provide increased stacking rigidity, improved control of warpage, minimal moisture condensation, and faster cool-down of the container and contents. Such undulations '14 have been found especially useful in thin Walled plastic cases. Corners 15, formed by adjacent side walls 12, are recessed so as to prevent a tight mated fit with corners of cartons, or the like, contained within tote case 10.
It is noted that each side wall 12 has hand opening 16 with a lip or raised flange 18 around the periphery thereof to provide a reinforced grip. Formed around the upper periphery of each side Wall is a thickened portion 20 which concludes in downwardly extending corner portions 22, the latter containing holes 24 which can be engaged by hooks or the like when the cases are moved by heavy equipment.
The lower end of each side wall 12 merges into bottom 28 by way of a recessed stacking shoulder portion 26 which gives a generally flat vertical surface or lower peripheral bottom edge 30 with bumps or rounded tapered prot-urberances 32 located in spaced relationship therealong, as best seen in FIGS. 1 and 4. Protuberances 32 act as spacers juxtapositionable with the inner surface 34 about the top of a stacked tote case of a similar configuration. Preferably, protuberances 32 extend from the surface 30 a distance so as to snugly engage inner surface 34 to give added rigidity to the stacked cases. It can readily be seen that shoulder 26 rests upon the upper peripheral edge 36 of the case therebelow.
FIGURE 3 especially shows that the bottom 18 of tote case 10 is formed about a pluraltiy of cut-outs 38 which provide the improved drainage capabilities of the case, both when it holds containers and when it is in a plant, such as a dairy, being cleaned. The cut-outs 38 are defined by crossed planar portion 40 which is in turn reinforced downwardly extending ridges 42 along approximately all of its surface. The T-shaped cross section construction formed by planar portion 40 and downwardly extending rib 42 give improved rigidity. Cut-outs 38 are generally in the form of parallograms except about the periphery of the bottom where they are in the form of triangles approximately one-half the size of the parallelograms. The crosses formed by planar portion 40 comprise at least linear diagonals extending generally across said bottom wall between opposite corners thereof.
In forming such a container and its bottom configuration, plastic material is injected into a mold in equal di- 3 rections from the center of the bottom through a gate (not shown). The location of the gate is defined in FIG- URE 3 by central aperture 44 which is surrounded by thickened peripheral flange 46. When a case is injection molded, plastic flows from the center portion, under pressure, in a flow pattern substantially as defined by surfaces 40 and ribs 42., which pattern makes the distance from the orifice of the gate to peripheral points around the sides, such as 48, 50, 52, etc., the same. Thus, the distance through which the material must flow, i.e. from the gate to the corners or the side walls, is the same in every instance. Such uniform controlled material distribution in molded cases having square or rectangular bases eliminates the prior problems caused by warping, poor weld lines, packing stress, and all the other inherent characteristics in prior art designs.
That an elongated rectangular base for a tote case can likewise have uniform material distribution when molded through a central gate is illustrated by FIGURE 5. For example, here the flow distance from central aperture 54 of case 56 to the corners, such as corner 58, is the same as the flow distance to any point on the sides, such as to points 60 or 62, the distance being defined by ribs 64. Ribs 64 in this instance define cut-outs 66 in the shape of parallelograms about the center and triangles about the periphery of the bottom.
While certain representative embodiments and details have been shown for the purpose of illustrating the invention, it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention.
Accordingly, what is claimed as new is:
1. A tote case comprising a box-like structure having a bottom wall, upwardly extending sidewalls surrounding said bottom wall, a stacking shoulder extending generally horizontally inwardly of said sidewalls and exposing the lower peripheral edge of said bottom Wall, said lower peripheral edge of the bottom wall being dimensionally less than the upper inner extent of said sidewalls, protuberances extending outwardly of said lower peripheral edge of the bottom wall, said protuberances acting as spacers juxtapositional with the upper inner extent of the sidewalls of a like tote case stacked therebelow.
2. A tote case comprising a box-like structure having a bottom wall, upwardly extending sidewalls surrounding said bottom wall, a stacking shoulder extending generally horizontally inwardly of said sidewall and exposing the lower peripheral edge of said bottom wall, said lower peripherel edge of the bottom wall being dimensionally less than the upper inner extent of said sidewalls, protuberances extending outwardly of the lower peripheral edge of said bottom wall, said protuberances being tapered upwardly and outwardly and extending a distance at their upper portion sufficient to snugly engage the inner surface of the top portion of the sidewalls of a like tote case stacked directly therebelow.
3. A tote case comprising a box-like structure having a bottom wall, upwardly extending sidewalls surrounding said bottom wall, a stacking shoulder extending generally horizontally inwardly of said sidewall and exposing the lower peripheral edge of said bottom wall, said lower peripheral edge of the bottom wall being dimensionally less than the upper inner extent of said sidewall, protuberances extending outwardly of the lower peripheral edge of said bottom wall, the lateral extent of said bottom wall with protuberances being approximately the same as the lateral extent between the inside surface of opposite sidewalls about the top of said case.
4. A tote case comprising a box-like structure having a bottom wall, upwardly extending sidewalls surrounding said bottom wall, a stacking shoulder extending generally horizontally inwardly of said sidewall and exposing the lower peripheral edge of said bottom wall, said lower peripheral edge of the bottom wall being dimensionally less than the upper extent of said sidewalls, protuberances extending outwardly of the lower peripheral edge of said bottom wall, said bottom wall comprising a planar portion having a plurality of cutouts therein, said cut-outs defining triangles about the periphery of said bottom wall and parallelograms approximately twice the area of said triangles about the rest of said bottom wall, the planar portion comprising at least linear diagonals extending generally across said bottom wall between opposite corners thereof, said diagonals at their crossing defining at least one aperture, and reinforcing rib means extending downwardly from said planar portion.
References Cited UNITED STATES PATENTS 3,002,650 10/1961 Lovell 22097 3,005,572 10/ 1961 Gustafson 22072 3,055,531 9/1962 De Chelbor 22021 3,186,586 6/1965 Box 22097 FOREIGN PATENTS 1,271,931 8/1961 France.
822,3 O9 10/ 1959 Great Britain.
956,026 1/ 1957 Germany.
THERON E. CONDON, Primary Examiner,
E, Assistqnt Examiner,
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US544326A US3362576A (en) | 1964-01-06 | 1966-02-23 | Plastic tote case and method of making same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US335739A US3264396A (en) | 1964-01-06 | 1964-01-06 | Method of injection molding a tote case |
US544326A US3362576A (en) | 1964-01-06 | 1966-02-23 | Plastic tote case and method of making same |
Publications (1)
Publication Number | Publication Date |
---|---|
US3362576A true US3362576A (en) | 1968-01-09 |
Family
ID=23313067
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US335739A Expired - Lifetime US3264396A (en) | 1964-01-06 | 1964-01-06 | Method of injection molding a tote case |
US544326A Expired - Lifetime US3362576A (en) | 1964-01-06 | 1966-02-23 | Plastic tote case and method of making same |
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Application Number | Title | Priority Date | Filing Date |
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US335739A Expired - Lifetime US3264396A (en) | 1964-01-06 | 1964-01-06 | Method of injection molding a tote case |
Country Status (6)
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US (2) | US3264396A (en) |
BE (1) | BE657908A (en) |
DE (1) | DE1928957U (en) |
FR (1) | FR1420818A (en) |
GB (1) | GB1067738A (en) |
NL (1) | NL6415231A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3392875A (en) * | 1967-06-22 | 1968-07-16 | Ms Ind Inc | Stacking tray with 90 u deg. nesting |
US3506154A (en) * | 1968-07-08 | 1970-04-14 | Laidlaw Corp | Plastic case for milk bottles |
US3516592A (en) * | 1967-04-19 | 1970-06-23 | Wolfgang Friedrich | Collapsible transport box |
US4023680A (en) * | 1971-09-22 | 1977-05-17 | Dare Plastics Inc. | Bakery tray |
US4125187A (en) * | 1974-10-21 | 1978-11-14 | Amerace Corporation | Thermoplastic casing and method of manufacturing same |
US5593037A (en) * | 1995-09-01 | 1997-01-14 | Ohayon; Abraham | Stackable bins |
USD382405S (en) * | 1995-09-01 | 1997-08-19 | Aberdeen Plastics Co., Inc. | Stackable bin |
WO2009075686A1 (en) * | 2007-12-13 | 2009-06-18 | Ropak Corporation | Container apparatus and related methods |
US20090152280A1 (en) * | 2007-12-13 | 2009-06-18 | Frano Luburic | Container apparatus and related methods |
US8540076B2 (en) * | 2011-10-24 | 2013-09-24 | Gary Bucholz | Stackable construction container |
USD771339S1 (en) | 2015-09-30 | 2016-11-08 | Bway Corporation | Round pail |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3436446A (en) * | 1966-06-08 | 1969-04-01 | Union Carbide Corp | Molding of foamed thermoplastic articles |
US5560884A (en) * | 1992-11-23 | 1996-10-01 | Esterline Technologies Corporation | Method of producing a molded woven cable |
US5549215A (en) * | 1994-01-27 | 1996-08-27 | Cruce; Christopher J. | Plastic open frame basket construction and method of making the same |
JP2887832B2 (en) * | 1994-04-15 | 1999-05-10 | 株式会社ニフコ | Speaker grill and molding method thereof |
WO2005102854A1 (en) * | 2004-04-08 | 2005-11-03 | United States Postal Service | Lightweight interlocking container |
US20130111836A1 (en) * | 2009-10-30 | 2013-05-09 | Macneil Ip Llc | Injection molded floor tiles with drainage vents |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE956026C (en) * | 1953-11-21 | 1957-01-10 | Paul Bartkewitz | Container for ink, colors |
GB822309A (en) * | 1956-12-18 | 1959-10-21 | Walter Clare | Improvements in riddles or members having a cylindrical wall |
FR1271931A (en) * | 1960-10-25 | 1961-09-15 | Plastic bottle crate | |
US3002650A (en) * | 1959-05-27 | 1961-10-03 | Baker Plastic Containers Inc | Stacking case and tote box of plastic material |
US3005572A (en) * | 1959-09-28 | 1961-10-24 | Prophylactic Brush Co | Plastic case construction |
US3055531A (en) * | 1959-11-13 | 1962-09-25 | Novo Ind Corp | Carrying case with partitions |
US3186586A (en) * | 1962-11-26 | 1965-06-01 | Box Theodor | Plastic carrying case |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2199144A (en) * | 1937-05-03 | 1940-04-30 | Standard Products Co | Method of injecting thermoplastic material into a mold |
US2426651A (en) * | 1946-03-04 | 1947-09-02 | French Oil Mill Machinery | Injection molding |
GB778683A (en) * | 1952-11-10 | 1957-07-10 | Bristol Aircraft Ltd | Improvements in or relating to the moulding of articles from thermosetting resins and fibrous material |
US2773624A (en) * | 1954-09-20 | 1956-12-11 | Calresin Ind Inc | Plastic case for transporting packaged fresh milk |
FR1240706A (en) * | 1959-07-31 | 1960-09-09 | Crate for the transport and presentation of food and other products | |
US3107026A (en) * | 1959-11-13 | 1963-10-15 | Novo Ind Corp | Carrying case for soft drinks and the like |
FR1294166A (en) * | 1960-04-01 | 1962-05-26 | Suisse Horlogerie | Integrated circuit electronic device |
US3159701A (en) * | 1960-12-12 | 1964-12-01 | George L Herter | Injection molding of plastic ammunition case |
US3129838A (en) * | 1961-04-06 | 1964-04-21 | Iii Clark C Wormer | Beverage bottle case |
US3132197A (en) * | 1961-06-05 | 1964-05-05 | Phillips Petroleum Co | Warp free injection molding |
-
1964
- 1964-01-06 US US335739A patent/US3264396A/en not_active Expired - Lifetime
- 1964-12-17 DE DED30357U patent/DE1928957U/en not_active Expired
- 1964-12-18 GB GB51539/64A patent/GB1067738A/en not_active Expired
- 1964-12-30 NL NL6415231A patent/NL6415231A/xx unknown
-
1965
- 1965-01-05 BE BE657908D patent/BE657908A/xx unknown
- 1965-01-05 FR FR895A patent/FR1420818A/en not_active Expired
-
1966
- 1966-02-23 US US544326A patent/US3362576A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE956026C (en) * | 1953-11-21 | 1957-01-10 | Paul Bartkewitz | Container for ink, colors |
GB822309A (en) * | 1956-12-18 | 1959-10-21 | Walter Clare | Improvements in riddles or members having a cylindrical wall |
US3002650A (en) * | 1959-05-27 | 1961-10-03 | Baker Plastic Containers Inc | Stacking case and tote box of plastic material |
US3005572A (en) * | 1959-09-28 | 1961-10-24 | Prophylactic Brush Co | Plastic case construction |
US3055531A (en) * | 1959-11-13 | 1962-09-25 | Novo Ind Corp | Carrying case with partitions |
FR1271931A (en) * | 1960-10-25 | 1961-09-15 | Plastic bottle crate | |
US3186586A (en) * | 1962-11-26 | 1965-06-01 | Box Theodor | Plastic carrying case |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3516592A (en) * | 1967-04-19 | 1970-06-23 | Wolfgang Friedrich | Collapsible transport box |
US3392875A (en) * | 1967-06-22 | 1968-07-16 | Ms Ind Inc | Stacking tray with 90 u deg. nesting |
US3506154A (en) * | 1968-07-08 | 1970-04-14 | Laidlaw Corp | Plastic case for milk bottles |
US4023680A (en) * | 1971-09-22 | 1977-05-17 | Dare Plastics Inc. | Bakery tray |
US4125187A (en) * | 1974-10-21 | 1978-11-14 | Amerace Corporation | Thermoplastic casing and method of manufacturing same |
US5593037A (en) * | 1995-09-01 | 1997-01-14 | Ohayon; Abraham | Stackable bins |
USD382405S (en) * | 1995-09-01 | 1997-08-19 | Aberdeen Plastics Co., Inc. | Stackable bin |
WO2009075686A1 (en) * | 2007-12-13 | 2009-06-18 | Ropak Corporation | Container apparatus and related methods |
US20090152280A1 (en) * | 2007-12-13 | 2009-06-18 | Frano Luburic | Container apparatus and related methods |
US8256640B2 (en) | 2007-12-13 | 2012-09-04 | Ropak Corporation | Container apparatus and related methods |
US8540076B2 (en) * | 2011-10-24 | 2013-09-24 | Gary Bucholz | Stackable construction container |
USD771339S1 (en) | 2015-09-30 | 2016-11-08 | Bway Corporation | Round pail |
Also Published As
Publication number | Publication date |
---|---|
BE657908A (en) | 1965-07-05 |
GB1067738A (en) | 1967-05-03 |
NL6415231A (en) | 1965-07-07 |
DE1928957U (en) | 1965-12-09 |
US3264396A (en) | 1966-08-02 |
FR1420818A (en) | 1965-12-10 |
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