US3675808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Knockdown foamed plastic shipping container
Assignee: Individual
•
Filing: 1970-06-26
•
Granted: 1972-07-11
•
Expires: 1990-06-26
Abstract
Abstract A unitary knockdown foamed polystyrene shipping container blank molded in a single operation for fruits, comestibles and other articles has a flat rectangular bottom wall with the four sidewalls hinged thereto by integral thin flexible hinge portions. Two of the sidewalls have slots therein adjacent their side edges and two of the other sidewalls have ears projecting from their respective side edges for insertion into the slots to lock the adjoining sidewalls together. Two of the side walls have lugs on each of their upper corners which project beyond the plane of the side walls and the top edges of the sidewalls. The lugs are adapted to interlock with recesses formed in the bottom corners of the side walls having the lugs thereon of an adjacent shipping container. A recess in two of the side walls allows air to circulate freely around the containers when stacked in sideby-side relation.
Inventors
- 👤 Delbert L Brink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:24
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/22; B65D1/225
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
219 words
A one-piece knockdown container blank of foamed plastic forming, when erected, a shipping container for comestibles and other articles, comprising: a bottom wall and sidewalls of foamed plastic, the sidewalls connected to the respective edges of the bottom wall by Vshaped grooves, the base of the V of each of the grooves being thin flexible hinge portions of the same foamed plastic material but of reduced thickness with the sidewalls of the Vgrooves sloping upwardly from the base of the V at about a 45* angle to allow folding of the sidewalls of the container blank from a flat position to an upright position, projections protruding from the side edges of two opposite sidewalls, slots adjacent the side edges of two other sidewalls for receiving the projections in the two opposite walls to interlock the sidewalls together, integral lugs formed in the upper corners of opposite sidewalls extending above top edges of the sidewalls at each of the four corners of the shipping container when in the erect position, recesses molded in the lower corners of opposite walls at each of the four corners of the shipping container when in the erect position, the lugs of one shipping container adapted to be received in corresponding recesses of an adjacent shipping container, thereby interlocking the erected containers together when stacked.
Claim 2
Dependent Claim
219 words
A one-piece knockdown container blank of foamed plastic forming, when erected, a shipping container for comestibles and other articles, comprising: a bottom wall and sidewalls of foamed plastic, the sidewalls connected to the respective edges of the bottom wall by Vshaped grooves, the base of the V of each of the grooves being thin flexible hinge portions of the same foamed plastic material but of reduced thickness with the sidewalls of the Vgrooves sloping upwardly from the base of the V at about a 45* angle to allow folding of the sidewalls of the container blank from a flat position to an upright position, projections protruding from the side edges of two opposite sidewalls, slots adjacent the side edges of two other sidewalls for receiving the projections in the two opposite walls to interlock the sidewalls together, integral lugs formed in the upper corners of opposite sidewalls extending above top edges of the sidewalls at each of the four corners of the shipping container when in the erect position, recesses molded in the lower corners of opposite walls at each of the four corners of the shipping container when in the erect position, the lugs of one shipping container adapted to be received in corresponding recesses of an adjacent shipping container, thereby interlocking the erected containers together when stacked.
Claim 3
Dependent Claim
64 words
The container of claim 1 wherein the terminating edges of two opposite sidewalls extend beyond the outer planer surface of the intersecting sidewalls and wherein channels are formed in each of the extensions, the bottom surfaces of the extensions being substantially coincident with the outer planer surface of the intersecting sidewalls to permit air circulation around the erected containers when stacked in side-by-side relation.
Claim 4
Dependent Claim
95 words
The container of claim 1 wherein one sidewall of the V-grooves is provided with a shoulder having a substantially horizontal surface running the length of the groove and the other sidewall of the V-grooves is provided with an indentation running the length of the groove, the indentation adapted to mate with the shoulder when the sidewalls of the container are in erect position so that the horizontal surface of the shoulder bears a portion of the downward force exerted on the intregal hinge portions of the container when they are stacked one above the other.
Claim 5
Dependent Claim
196 words
A shipping container for comestibles of Fused together expanded polystyrene beads comprising: a flat rectangular bottom wall, sidewalls and end walls connected along their lower edges to the respective edges of the bottom walls by V-shaped grooves, the base of the V of the grooves being thin flexible hinge portions of the same expanded polystyrene material but of reduced thickness, the sidewalls of the V-grooves sloping upwardly from the base thereof from at about a 45* angle to allow folding of the side and end walls from a flat position to an upright position, ears projecting from each of the side edges of the sidewalls of the container, complementary slots for each of the projecting ears formed adjacent each of the side edges of the end walls for interlocking the side and end walls together when in upright position, intregal lugs formed in the upper corner of each of the end walls extending above the top edges thereof, complimentary recesses formed in each of the lower corners of the end walls, the lugs of one shipping container adapted to fit into the complementary recesses of an adjacent shipping container to interlock the containers together when stacked.
Claim 6
Dependent Claim
196 words
A shipping container for comestibles of Fused together expanded polystyrene beads comprising: a flat rectangular bottom wall, sidewalls and end walls connected along their lower edges to the respective edges of the bottom walls by V-shaped grooves, the base of the V of the grooves being thin flexible hinge portions of the same expanded polystyrene material but of reduced thickness, the sidewalls of the V-grooves sloping upwardly from the base thereof from at about a 45* angle to allow folding of the side and end walls from a flat position to an upright position, ears projecting from each of the side edges of the sidewalls of the container, complementary slots for each of the projecting ears formed adjacent each of the side edges of the end walls for interlocking the side and end walls together when in upright position, intregal lugs formed in the upper corner of each of the end walls extending above the top edges thereof, complimentary recesses formed in each of the lower corners of the end walls, the lugs of one shipping container adapted to fit into the complementary recesses of an adjacent shipping container to interlock the containers together when stacked.
Claim 7
Dependent Claim
95 words
The container of claim 4 wherein one sidewall of the V-grooves is provided with a shoulder having a substantially horizontal surface running the length of the groove and the other sidewall of the V-grooves is provided with an indentation running the length of the groove, the indentation adapted to mate with the shoulder when the sidewalls of the container are in erect position so that the horizontal surface of the shoulder bears a portion of the downward force exerted on the intregal hinge portions of the container when they are stacked one above the other.
Claim 8
Dependent Claim
37 words
The shipping container of claim 4 including slots running parallel to the top edge of the end walls and adjacent the top edge of the end walls adapted to receive tabs of a top for the container.
Claim 9
Dependent Claim
48 words
The shipping container of claim 4 including projections in each of the end walls extending inwardly when the end walls are in erect position, the projections running parallel to the top edges of the end walls and directly beneath the slots for supporting a top for the container.
References Cited (Backward Citations)
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Cited
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Cited
US3432061A
Cited
US3473690A
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US3497127A
Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |