US3257915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bag forming machine
Assignee: AMOCO FABRICS COMPANY A CORP OF DE
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Filing: 1963-07-10
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Granted: 1966-06-28
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Expires: 1983-07-10
Abstract
No abstract record available.
Inventors
- 👤 Cartier Pierre
- 👤 Arnaud Louis St
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:21
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/02; B31B70/10; B31B2155/00; B31B2155/002; B31B2160/00; B31B2160/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A METHOD FOR MANUFACTURING BAGS SUCCESSIVELY FROM A WEB OF HEAT SEALABLE FILM AND A NARROWER WEB OF NETLIKE MATERIAL COMPRISING FEEDING A WEB OF SAID FILM WITH A WEB OF SAID NET-LIKE MATERIAL SUPERIMPOSED UPON IT UNDER A FLAT GUIDE PLATE WHEREBY BOTH OF SAID WEBS ARE MAINTAINED IN FLATTENED FORM FOLDING THE SIDE EDGES OF SAID FILM OVER ON TOP OF THE TWO SIDE EDGES OF SAID NETTING AND ABOUT THE SIDE EDGES OF SAID GUIDE PLATE, RELEASING SUBSTANTIALLY ALL APPLIED STREESES TO SAID WEBS AND PERMITTING SAID WEBS TO RELAX AND RETURN TO THEIR ORIGINAL DIMENSIONS, FOLDING THE ENDS OF SAID WEBS OVER ON TOP OF THEMSELVES, JOINING THE THREE EDGES OF SAID WEBS BY HEAT SEALING THE FOLDED-OVER FILM TO ITSELF THROUGH THE INTERSTICES OF THE NET, INSERTING SAID WEBS INTO THE CONVEYING MEANS, CONVEYING SAID SEALED SECTION THROUGH THE MACHINE AND CUTTING OFF SAID SEALED SECTION FROM THE WEBS OF FILM AND NETTING, AND DISCHARGING THE COMPLETED BAG FROM THE MACHINE.
Claim 2
Independent Claim
166 words
A METHOD FOR MANUFACTURING BAGS SUCCESSIVELY FROM A WEB OF HEAT SEALABLE FILM AND A NARROWER WEB OF NETLIKE MATERIAL COMPRISING FEEDING A WEB OF SAID FILM WITH A WEB OF SAID NET-LIKE MATERIAL SUPERIMPOSED UPON IT UNDER A FLAT GUIDE PLATE WHEREBY BOTH OF SAID WEBS ARE MAINTAINED IN FLATTENED FORM FOLDING THE SIDE EDGES OF SAID FILM OVER ON TOP OF THE TWO SIDE EDGES OF SAID NETTING AND ABOUT THE SIDE EDGES OF SAID GUIDE PLATE, RELEASING SUBSTANTIALLY ALL APPLIED STREESES TO SAID WEBS AND PERMITTING SAID WEBS TO RELAX AND RETURN TO THEIR ORIGINAL DIMENSIONS, FOLDING THE ENDS OF SAID WEBS OVER ON TOP OF THEMSELVES, JOINING THE THREE EDGES OF SAID WEBS BY HEAT SEALING THE FOLDED-OVER FILM TO ITSELF THROUGH THE INTERSTICES OF THE NET, INSERTING SAID WEBS INTO THE CONVEYING MEANS, CONVEYING SAID SEALED SECTION THROUGH THE MACHINE AND CUTTING OFF SAID SEALED SECTION FROM THE WEBS OF FILM AND NETTING, AND DISCHARGING THE COMPLETED BAG FROM THE MACHINE.
References Cited (Backward Citations)
US2056804A
Cited
US2330446A
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US2442936A
Cited
US2779256A
Cited
US2805700A
Cited
US2873566A
Cited
US3040966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |