Patent US3901431A successfully refreshed from Google Patents.
US3901431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylindrical leak-resistant, thermoplastic coated, paperboard container
Assignee: International Paper Co
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Filing: 1974-08-19
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Granted: 1975-08-26
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Expires: 1994-08-19
Abstract
Abstract A generally cylindrical, thermoplastic coated, paperboard container having a leak-resistant, flat-bottomed structure, formed from a side seamed, thermoplastic coated paperboard blank having a plurality of alternating tapered fingers and angular fingers on one of its edges, the tapered fingers and angular fingers being separated by triangular gusset panels foldably connected to the fingers by score lines in the blank, the angular fingers being adapted to abut on the bottom, exterior surface of the container with a flat profile and the tapered fingers being adapted to overlap on the bottom, interior surface of the container to seal the bottom of the container.
Inventors
- 👤 Richard Warren Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:12
CPC Classifications
B; B65; B65D; B65D3/00; B65D3/10; B65D3/20
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
89 words
In a thermoplastic coated, paperboard container, provided with a generally cylindrical side wall, an improved bottom construction, comprising: a plurality of abutting, angular fingers on the bottom, exterior surface of the container; a plurality of overlapping, tapered fingers on the bottom, interior surface of the container; each of said angular fingers and said tapered fingers being separated by a triangular gusset panel, foldably connected to and horizontally aligned between said angular fingers and tapered fingers; and said angular fingers and tapered fingers being foldably connected to said side wall.
Claim 2
Dependent Claim
89 words
In a thermoplastic coated, paperboard container, provided with a generally cylindrical side wall, an improved bottom construction, comprising: a plurality of abutting, angular fingers on the bottom, exterior surface of the container; a plurality of overlapping, tapered fingers on the bottom, interior surface of the container; each of said angular fingers and said tapered fingers being separated by a triangular gusset panel, foldably connected to and horizontally aligned between said angular fingers and tapered fingers; and said angular fingers and tapered fingers being foldably connected to said side wall.
Claim 3
Dependent Claim
14 words
The container of claim 1 wherein each of said angular fingers defines a pentagon.
Claim 4
Dependent Claim
44 words
The container of claim 2 wherein two, adjacent sides of each of said pentagonal, angular fingers are of equal length and include an angle such that the sum of the angles included by said two, adjacent sides in each pentagonal, angular finger totals 360*.
Claim 5
Dependent Claim
24 words
The container of claim 3 wherein said angle included between said two, equal adjacent sides in each of said pentagonal, angular fingers is equal.
Claim 6
Dependent Claim
22 words
The container of claim 4 wherein said container includes six pentagonal, angular fingers and said included angle in each finger is 60*.
Claim 7
Dependent Claim
14 words
The container of claim 2 wherein each of said tapered fingers defines a hexagon.
Claim 8
Dependent Claim
16 words
The container of claim 1 wherein one of said tapered fingers is longer than the others.
Claim 9
Dependent Claim
23 words
The container of claim 7 wherein said one, longer tapered finger is the only tapered finger overlying the center of said bottom construction.
Claim 10
Dependent Claim
20 words
The container of claim 7 wherein said one longer tapered finger overlies a portion of all the other tapered fingers.
Claim 11
Dependent Claim
21 words
The container of claim 1 wherein each of said triangular gusset panels includes at least one angle that is the same.
Claim 12
Dependent Claim
52 words
A blank for a generally cylindrical, paperboard container comprising: a substantially rectangular panel, and a plurality of alternating tapered fingers and angular fingers, foldably connected to an edge of said rectangular panel; each of said angular fingers and said tapered fingers being separated by and foldably connected to a triangular gusset panel.
Claim 13
Dependent Claim
52 words
A blank for a generally cylindrical, paperboard container comprising: a substantially rectangular panel, and a plurality of alternating tapered fingers and angular fingers, foldably connected to an edge of said rectangular panel; each of said angular fingers and said tapered fingers being separated by and foldably connected to a triangular gusset panel.
Claim 14
Dependent Claim
14 words
The blank of claim 11 wherein each of said angular fingers defines a pentagon.
Claim 15
Dependent Claim
44 words
The blank of claim 12 wherein two adjacent sides of each of said pentagonal angular fingers are of equal length and include an angle such that the sum of the angles included by said two, adjacent sides in each pentagonal, angular finger totals 360*.
Claim 16
Dependent Claim
24 words
The blank of claim 13 wherein said angle included between said two, equal adjacent sides in each of said pentagonal, angular fingers is equal.
Claim 17
Dependent Claim
14 words
The blank of claim 12 wherein each of said tapered fingers defines a hexagon.
Claim 18
Dependent Claim
16 words
The blank of claim 10 wherein one of said tapered fingers is longer than the others.
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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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |