US3841479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container and container blank
Assignee: Continental Can Co Inc
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Filing: 1972-05-15
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Granted: 1974-10-15
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Expires: 1992-05-15
Abstract
Abstract This application discloses a container blank having a bottom and upstanding sides formed of dual walls of a flexible polymeric material such that it may be folded into a reduced space to form a blank. Additionally the disclosure includes the injection of a foamed-in-place cellular structure between these dual walls so as to provide a more rigid container having a high strength to weight ratio. Finally, the disclosure includes a method of sealing a closure to the top of the container utilizing a foamed in placed method.
Inventors
- 👤 R Szatkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:31
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/38; B65D81/3848; B65D81/3858; Y; Y10; Y10S; Y10S220/00; Y10S220/90; Y10S220/902
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
74 words
A new article of manufacture comprising a container blank including a bottom portion and side portions integrally connected to one another and to said bottom portion to define a container shape, said side portions each being defined by dual walls of a thin flexible polymer material separated from one another and defining a space therebetween, and said side portions including means for folding said side portions against said bottom portion for storage and shipment.
Claim 2
Dependent Claim
74 words
A new article of manufacture comprising a container blank including a bottom portion and side portions integrally connected to one another and to said bottom portion to define a container shape, said side portions each being defined by dual walls of a thin flexible polymer material separated from one another and defining a space therebetween, and said side portions including means for folding said side portions against said bottom portion for storage and shipment.
Claim 3
Dependent Claim
18 words
The container blank of claim 1 wherein interiors of said side portions are in communication with one another.
Claim 4
Dependent Claim
34 words
The container blank of claim 1 wherein said bottom portion is also of a dual wall construction, and the interiors of said side portions are in communication with one another and said bottom portion.
Claim 5
Dependent Claim
31 words
The container blank of claim 1 wherein upper edges of the dual walls of said side portions are interconnected by a sealing surface defining member and maintained in spaced relation thereby.
Claim 6
Dependent Claim
53 words
The container blank of claim 1 wherein upper edges of the dual walls of said side portions are interconnected by a sealing surface defining member and maintained in spaced relation thereby, said sealing surface defining member having at least one aperture therein for introducing a filler into the space between said dual walls.
Claim 7
Dependent Claim
46 words
The container blank of claim 1 wherein upper edges of the dual walls of said side portions are interconnected by a sealing surface defining member and maintained in spaced relation thereby, said sealing surface defining member having extension forming flap means for handling of the container.
Claim 8
Dependent Claim
27 words
The container blank of claim 1 wherein said dual walls include inner and outer walls, said inner walls being continuous and said outer walls being separately continuous.
Claim 9
Dependent Claim
15 words
The container blank of claim 7 wherein said space between said dual walls is continuous.
Claim 10
Dependent Claim
111 words
A new article of manufacture comprising a container having a bottom portion and side walls, said bottom portion and said side walls each being of a dual wall construction, said dual walls including a continuous inner wall defining inner surfaces of said bottom portion and said side walls and a separate continuous outer wall defining outer surfaces of saiD bottom portion and said side walls, said inner and outer walls being formed of a thin flexible polymer material and being connected together at upper edges of said side walls by a seal forming member, and a formed in situ foamed cellular material filling the space between said inner and outer walls.
Claim 11
Dependent Claim
111 words
A new article of manufacture comprising a container having a bottom portion and side walls, said bottom portion and said side walls each being of a dual wall construction, said dual walls including a continuous inner wall defining inner surfaces of said bottom portion and said side walls and a separate continuous outer wall defining outer surfaces of saiD bottom portion and said side walls, said inner and outer walls being formed of a thin flexible polymer material and being connected together at upper edges of said side walls by a seal forming member, and a formed in situ foamed cellular material filling the space between said inner and outer walls.
Claim 12
Dependent Claim
19 words
The container of claim 9 wherein said seal forming member has at least one foamed cellular material passage therein.
Claim 13
Dependent Claim
33 words
The container of claim 9 wherein said seal forming member has extensions projecting outwardly of at least two opposite ones of said side walls and defining flap means for handling of the container.
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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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |