Patent US3397622A successfully refreshed from Google Patents.
US3397622A
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Assignee: Amcor Flexibles North America Inc
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Filing: 1966-10-19
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Granted: 1968-08-20
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Expires: 1986-10-19
Abstract
No abstract record available.
Inventors
- 👤 Ralph C Goodwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:36
CPC Classifications
B; B65; B65D; B65D31/00; B65D31/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
223 words
THE METHOD OF MAKING A CLOSURE AT ONE END OF A BAG TUBE OF FLEXIBLE HEAT-SEALABLE SHEET PLASTIC MATERIAL COMPRISING FOLDING BACK A PORTION OF ONE WALL OF THE TUBE ON A FIRST FOLD LINE EXTENDING TRANSVERSELY ACROSS SAID WALL TO PROVIDE AN END CLOSURE FORMATION COMPRISING END FLAPS HAVING THEIR INNER ENDS SPACED FROM ONE ANOTHER AND SIDE FLAPS ADAPTED TO BE FOLDED OVER ON SECOND AND THIRD FOLD LINES LOCATED ON OPPOSIDE SIDES OF SAID FIRST FOLD LINE, POSITIONING AN INSERT OF FLEXIBLE HEAT-SEALABLE SHEET PLASTIC MATERIAL TO SPAN THE INNER ENDS OF THE END FLAPS AND LAPPING THE INNER END MARGINS OF THE END FLAPS, FORMING A HEAT SEAL ON A LINE EXTENDING GENERALLY PARALLEL TO THE INNER END EDGE OF ONE OF SAID END FLAPS AND SPACED OUTWARD THEREFROM TO SEAL SAID ONE END FLAP AND THE INSERT TOGETHER ALONG SAID LINE OF SEAL WHILE INHIBITING BLOCKING OF SAID CLOSURE FORMATION IN THE REGION WHERE SAID ONE END FLAP AND THE INSERT ARE HEAT-SEALED TOGETHER ALONG SAID LINE OF SEAL, FORMING HEAT SEALS ON LINES EXTENDING PARALLEL TO AND SPACED INWARD FROM THE LATERAL EDGES OF THE INSERT, FOLDING OVER SAID SIDE FLAPS ON SAID SECOND AND THIRD FOLD LINES, AND HEAT-SEALING SAID SIDE FLAPS TOGETHER WHILE INHIBITING BLOCKING OF THE CLOSURE FORMATION WHERE SAID SIDE FLAPS ARE HEAT-SEALED.
Claim 2
Independent Claim
223 words
THE METHOD OF MAKING A CLOSURE AT ONE END OF A BAG TUBE OF FLEXIBLE HEAT-SEALABLE SHEET PLASTIC MATERIAL COMPRISING FOLDING BACK A PORTION OF ONE WALL OF THE TUBE ON A FIRST FOLD LINE EXTENDING TRANSVERSELY ACROSS SAID WALL TO PROVIDE AN END CLOSURE FORMATION COMPRISING END FLAPS HAVING THEIR INNER ENDS SPACED FROM ONE ANOTHER AND SIDE FLAPS ADAPTED TO BE FOLDED OVER ON SECOND AND THIRD FOLD LINES LOCATED ON OPPOSIDE SIDES OF SAID FIRST FOLD LINE, POSITIONING AN INSERT OF FLEXIBLE HEAT-SEALABLE SHEET PLASTIC MATERIAL TO SPAN THE INNER ENDS OF THE END FLAPS AND LAPPING THE INNER END MARGINS OF THE END FLAPS, FORMING A HEAT SEAL ON A LINE EXTENDING GENERALLY PARALLEL TO THE INNER END EDGE OF ONE OF SAID END FLAPS AND SPACED OUTWARD THEREFROM TO SEAL SAID ONE END FLAP AND THE INSERT TOGETHER ALONG SAID LINE OF SEAL WHILE INHIBITING BLOCKING OF SAID CLOSURE FORMATION IN THE REGION WHERE SAID ONE END FLAP AND THE INSERT ARE HEAT-SEALED TOGETHER ALONG SAID LINE OF SEAL, FORMING HEAT SEALS ON LINES EXTENDING PARALLEL TO AND SPACED INWARD FROM THE LATERAL EDGES OF THE INSERT, FOLDING OVER SAID SIDE FLAPS ON SAID SECOND AND THIRD FOLD LINES, AND HEAT-SEALING SAID SIDE FLAPS TOGETHER WHILE INHIBITING BLOCKING OF THE CLOSURE FORMATION WHERE SAID SIDE FLAPS ARE HEAT-SEALED.
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) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |