US3104599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber drum and its method of formation
Assignee: Greif Inc
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Filing: 1961-06-19
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Granted: 1963-09-24
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Expires: 1981-06-19
Abstract
No abstract record available.
Inventors
- 👤 Sr Herbert L Carpenter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:36
CPC Classifications
B; B65; B65D; B65D15/00; B65D15/02; B65D15/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
THE METHOD OF FORMING A DRUM COMPRISING: FORMING A CLOSURE DISK; PREFORMING A TUBULAR SHELL HAVING A PLURALITY OF SIDES AND MADE OF ADHESIVELY SECURED LAMINATED LAYERS OF FIBROUS MATERIAL WITH EACH SIDE OF SAID SHELL BEING TRANSVERSELY CONVEX AND THE CORNERS JOINING SAID SIDES TOGETHER BEING ROUNDED; PREFORMING A SUPERDRIED LINER FOR SAID SHELL HAVING A PLURALITY OF SIDES AND MADE OF FIBROUS MATERIAL WITH EACH SIDE OF SAID LINER BEING TRANSVERSELY CONVEX AND THE CORNERS JOINING SAID SIDES TOGETHER BEING ROUNDED; SECURING SAID DISK TO SAID SHELL TO CLOSE ONE END OF SAID SHELL; WHILE THE ADHESIVE OF SAID SHELL IS WET, INSERTING THE SUPERDRIED LINER IN SAID SHELL AND THEN EQUALIZING THE MOISTURE CONTENT OF SAID SHELL AND SAID LINER TO CAUSE RELATIVE SHRINKAGE AND EXPANSION OF SAID SHELL AND SAID LINER, RESPECTIVELY, TO THUSLY PROVIDE SURFACE TO SURFACE CONTACT OF THE SHELL WITH THE LINER BY PLACING SAID SHELL UNDER TENSION AND SAID LINER UNDER COMPRESSION WHEREIN A RIGID CONTAINER IS FORMED WHEREBY SAID SHELL AND SAID LINER RESISTS LOADS AS AN INTEGRAL ONEPIECE UNIT.
Claim 2
Independent Claim
179 words
THE METHOD OF FORMING A DRUM COMPRISING: FORMING A CLOSURE DISK; PREFORMING A TUBULAR SHELL HAVING A PLURALITY OF SIDES AND MADE OF ADHESIVELY SECURED LAMINATED LAYERS OF FIBROUS MATERIAL WITH EACH SIDE OF SAID SHELL BEING TRANSVERSELY CONVEX AND THE CORNERS JOINING SAID SIDES TOGETHER BEING ROUNDED; PREFORMING A SUPERDRIED LINER FOR SAID SHELL HAVING A PLURALITY OF SIDES AND MADE OF FIBROUS MATERIAL WITH EACH SIDE OF SAID LINER BEING TRANSVERSELY CONVEX AND THE CORNERS JOINING SAID SIDES TOGETHER BEING ROUNDED; SECURING SAID DISK TO SAID SHELL TO CLOSE ONE END OF SAID SHELL; WHILE THE ADHESIVE OF SAID SHELL IS WET, INSERTING THE SUPERDRIED LINER IN SAID SHELL AND THEN EQUALIZING THE MOISTURE CONTENT OF SAID SHELL AND SAID LINER TO CAUSE RELATIVE SHRINKAGE AND EXPANSION OF SAID SHELL AND SAID LINER, RESPECTIVELY, TO THUSLY PROVIDE SURFACE TO SURFACE CONTACT OF THE SHELL WITH THE LINER BY PLACING SAID SHELL UNDER TENSION AND SAID LINER UNDER COMPRESSION WHEREIN A RIGID CONTAINER IS FORMED WHEREBY SAID SHELL AND SAID LINER RESISTS LOADS AS AN INTEGRAL ONEPIECE UNIT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |