Patent US3580476A successfully refreshed from Google Patents.
US3580476A
Expired / Lapsed
US
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Carton for use with packaging apparatus
Assignee: Field Container Co LP
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Filing: 1969-10-23
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Granted: 1971-05-25
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Expires: 1989-10-23
Abstract
Abstract A carton for use with packaging apparatus for packaging food products and the like. The carton is formed of flexible board material and includes rectangular top, bottom, and sidewalls, the end portions of which are provided with fold lines defining top, bottom, and side flaps. The fold line between the bottom wall and one of the sidewalls is provided with spaced-apart cut slots therealong to facilitate the folding of the carton. Each of the bottom flaps is provided with a rectangular notch extending inwardly from the free edge of the flap at about the middle of the length thereof for accommodating a mechanical lifting element on the packaging apparatus. The side flaps are generally rectangular, and the grain of the board material extends generally parallel with the free edge of the bottom flap.
Inventors
- 👤 Lester E Cannon
- 👤 John M Tindall
- 👤 Howard N Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:03
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/02; B65D5/0227; Y; Y10; Y10S; Y10S229/00; Y10S229/90; Y10S229/902
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
279 words
A carton formed of flexible board material and having rectangular top, bottom and sidewalls and being open at opposite ends, the end portions of said top, bottom, and sidewalls being provided with fold lines defining top, bottom, and side flaps, each of said top and bottom flaps being generally rectangular and having an outer free edge, each of the top and bottom flaps being separated from the adjacent side flaps by a single knife cut to provide the side flaps with a generally rectangular shape, each of the side flaps including an outer free edge extending generally parallel to the free edges of the top and bottom flaps when the carton is in a lay-flat condition and a pair of parallel side edges extending generally perpendicular to the outer free edge of the side flap, each of said bottom flaps being provided with a rectangular notch extending inwardly from the free edge of such flap approximately midway along the length of the bottom flap, the free edge of each of the top flaps extending outwardly beyond the innermost portion of the notch of the bottom flap below the top flap whereby a mechanical lifting element can pass upwardly through each notch to engage and lift the top flap thereabove, the bottom wall and one of the sidewalls being joined by a fold line provided by a score line having spaced-apart slots cut therethrough, the carton including an opener flap extending from one of the sidewalls above the top wall and adhesively secured to the top wall, said opener flap being joined to said one sidewall by a fold line provided by a score line having spaced-apart slots cut therethrough.
Claim 2
Dependent Claim
279 words
A carton formed of flexible board material and having rectangular top, bottom and sidewalls and being open at opposite ends, the end portions of said top, bottom, and sidewalls being provided with fold lines defining top, bottom, and side flaps, each of said top and bottom flaps being generally rectangular and having an outer free edge, each of the top and bottom flaps being separated from the adjacent side flaps by a single knife cut to provide the side flaps with a generally rectangular shape, each of the side flaps including an outer free edge extending generally parallel to the free edges of the top and bottom flaps when the carton is in a lay-flat condition and a pair of parallel side edges extending generally perpendicular to the outer free edge of the side flap, each of said bottom flaps being provided with a rectangular notch extending inwardly from the free edge of such flap approximately midway along the length of the bottom flap, the free edge of each of the top flaps extending outwardly beyond the innermost portion of the notch of the bottom flap below the top flap whereby a mechanical lifting element can pass upwardly through each notch to engage and lift the top flap thereabove, the bottom wall and one of the sidewalls being joined by a fold line provided by a score line having spaced-apart slots cut therethrough, the carton including an opener flap extending from one of the sidewalls above the top wall and adhesively secured to the top wall, said opener flap being joined to said one sidewall by a fold line provided by a score line having spaced-apart slots cut therethrough.
Claim 3
Dependent Claim
26 words
The carton of claim 1 in which said spaced-apart slots are about five-eighths of an inch long and are spaced about three-eighths of an inch apart.
Claim 4
Dependent Claim
30 words
The carton of claim 1 in which the outer ends of the side flaps are provided with about a 45* cut between the outer free edge and each side edge.
Claim 5
Dependent Claim
24 words
The carton of claim 1 in which the grain of the board material extends generally parallel with the free edges of the bottom flaps.
Claim 6
Dependent Claim
160 words
A generally rectangular sheet of flexible paper board material for forming a carton, said sheet having: a. four spaced-apart parallel fold lines defining the longitudinal dimensions of the carton to be formed, the second and fourth fold lines being provided with spaced-apart slots cut therethrough; b. a first edge spaced from the first fold line and extending generally parallel therewith; c. a second edge spaced from the fourth fold line; d. third and fourth edges extending generally transversely to the first edge; e. a transverse fold line spaced inwardly from each of said third and fourth edges and extending parallel therewith; the portions of the longitudinal fold lines extending outwardly of the transverse fold lines being single-knife cut provide flaps between adjacent longitudinal fold lines having edges which extend generally perpendicular to the transverse fold lines; and f. a rectangular notch extending inwardly from each of the third and fourth edges about midway between the second and third fold lines.
Claim 7
Dependent Claim
160 words
A generally rectangular sheet of flexible paper board material for forming a carton, said sheet having: a. four spaced-apart parallel fold lines defining the longitudinal dimensions of the carton to be formed, the second and fourth fold lines being provided with spaced-apart slots cut therethrough; b. a first edge spaced from the first fold line and extending generally parallel therewith; c. a second edge spaced from the fourth fold line; d. third and fourth edges extending generally transversely to the first edge; e. a transverse fold line spaced inwardly from each of said third and fourth edges and extending parallel therewith; the portions of the longitudinal fold lines extending outwardly of the transverse fold lines being single-knife cut provide flaps between adjacent longitudinal fold lines having edges which extend generally perpendicular to the transverse fold lines; and f. a rectangular notch extending inwardly from each of the third and fourth edges about midway between the second and third fold lines.
Claim 8
Dependent Claim
26 words
The sheet of claim 5 in which the spaced-apart slots are about five-eighths of an inch long and are spaced about three-eighths of an inch apart.
References Cited (Backward Citations)
US3377767A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |