US3713576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylindrical carton
Assignee: International Paper Co
•
Filing: 1970-12-28
•
Granted: 1973-01-30
•
Expires: 1990-12-28
Abstract
Abstract A cylindrical carton is made from a folded sheet of flexibly stiff carton material. It comprises a body having opposite side and end margins. The body is flexed into cylindrical form with the opposite side margins overlapped and secured. At least one end margin is scored and folded into a plurality of triangular end sections which may be reversely folded inwardly of the cylinder to abut the sections against each other in mutually braced relation, thereby forming a self-sustaining end closure for the carton.
Inventors
- 👤 H Goebel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:27
CPC Classifications
B; B65; B65D; B65D3/00; B65D3/10; B65D3/20
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
209 words
A cylindrical carton made from a folded sheet of flexibly stiff carton material, the carton comprising: a. a body having two opposite end margins and two opposite side margins, b. the body being flexed into cylindrical form with the opposite side margins adjacent each other, c. securing means securing the side margins together in carton-forming relation, d. at least one end margin being scored and folded into a plurality of triangular end closing sections interconnected by a plurality of triangular connecting sections, the end closing and connecting sections being defined by a plurality of long and short longitudinal score lines interconnected by diagonal score lines to define the sides of triangles, the inner ends of the longitudinal score lines being interconnected by transverse score lines defining the bases of the triangular end closing sections, the long longitudinal score lines being substantially equal in length to the radius of the cylindrical carton, e. the end closing sections being reversely folded inwardly along their bases, after inward folding of the connecting sections, to abut the end closing sections against other in mutually braced relation, thereby forming an end closure for the carton, f. the apices of the triangular end closing sections meeting at substantially the longitudinal axis of the cylindrical body.
Claim 2
Dependent Claim
209 words
A cylindrical carton made from a folded sheet of flexibly stiff carton material, the carton comprising: a. a body having two opposite end margins and two opposite side margins, b. the body being flexed into cylindrical form with the opposite side margins adjacent each other, c. securing means securing the side margins together in carton-forming relation, d. at least one end margin being scored and folded into a plurality of triangular end closing sections interconnected by a plurality of triangular connecting sections, the end closing and connecting sections being defined by a plurality of long and short longitudinal score lines interconnected by diagonal score lines to define the sides of triangles, the inner ends of the longitudinal score lines being interconnected by transverse score lines defining the bases of the triangular end closing sections, the long longitudinal score lines being substantially equal in length to the radius of the cylindrical carton, e. the end closing sections being reversely folded inwardly along their bases, after inward folding of the connecting sections, to abut the end closing sections against other in mutually braced relation, thereby forming an end closure for the carton, f. the apices of the triangular end closing sections meeting at substantially the longitudinal axis of the cylindrical body.
Claim 3
Dependent Claim
209 words
A cylindrical carton made from a folded sheet of flexibly stiff carton material, the carton comprising: a. a body having two opposite end margins and two opposite side margins, b. the body being flexed into cylindrical form with the opposite side margins adjacent each other, c. securing means securing the side margins together in cartonforming relation, d. at least one end margin being scored and folded into a plurality of triangular end closing sections interconnected by a plurality of triangular connecting sections, the end closing and connecting sections being defined by a plurality of long and short longitudinal score lines interconnected by diagonal score lines to define the sides of triangles, the inner ends of the longitudinal score lines being interconnected by transverse score lines defining the bases of the triangular end closing sections, the long longitudinal score lines being substantially equal in length to the radius of the cylindrical carton, e. the end closing sections being reversely folded inwardly along their bases, after inward folding of the connecting sections, to abut the end closing sections against other in mutually braced relation, thereby forming an end closure for the carton, f. the apices of the triangular end closing sections meeting at substantially the longitudinal axis of the cylindrical body.
Claim 4
Dependent Claim
209 words
A cylindrical carton made from a folded sheet of flexibly stiff carton material, the carton comprising: a. a body having two opposite end margins and two opposite side margins, b. the body being flexed into cylindrical form with the opposite side margins adjacent each other, c. securing means securing the side margins together in cartonforming relation, d. at least one end margin being scored and folded into a plurality of triangular end closing sections interconnected by a plurality of triangular connecting sections, the end closing and connecting sections being defined by a plurality of long and short longitudinal score lines interconnected by diagonal score lines to define the sides of triangles, the inner ends of the longitudinal score lines being interconnected by transverse score lines defining the bases of the triangular end closing sections, the long longitudinal score lines being substantially equal in length to the radius of the cylindrical carton, e. the end closing sections being reversely folded inwardly along their bases, after inward folding of the connecting sections, to abut the end closing sections against other in mutually braced relation, thereby forming an end closure for the carton, f. the apices of the triangular end closing sections meeting at substantially the longitudinal axis of the cylindrical body.
Claim 5
Dependent Claim
22 words
The carton of claim 1 wherein both end margins are scored and folded to form a cylindrical carton closed at both ends.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |