US3391615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for the manufacture of a multi-ply bag
Assignee: Albemarle Paper Manufacturing Co
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Filing: 1966-04-28
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Granted: 1968-07-09
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Expires: 1986-04-28
Abstract
No abstract record available.
Inventors
- 👤 John G Lepisto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:58
CPC Classifications
B; B65; B65D; B65D31/00; B65D31/04; B31; B31B; B31B2155/00; B31B2155/002; B31B2170/00; B31B2170/20; B31B70/00; B31B70/26; B31B70/262; B31B70/266
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
IN AN APPARATUS FOR FORMING GUSSETS MULTI-PLY BAGS THE COMBINATION COMPRISING: (A) MEANS FOR TRANSPORTING AT LEAST ONE WEB OF SHEET MATERIAL FROM A SUPPLY ROLL THROUGH SAID APPARATUS; (B) MEANS FOR TRANSPORTING A FLATTENED, THIN-WALL TUBE OF SEAMLESS PLASTIC MATERIAL FROM A SUPPLY ROLL THROUGH SAID APPARATUS, SAID MEANS INCLUDING AIR ENTRAPMENT MEANS TO MAINTAIN A PORTION OF SAID TUBE OF PLASTIC MATERIAL INFLATED; AND (C) MEANS FOR FORMING SAID WEB OF SHEET MATERIAL AND SAID TUBE OF SEAMLESS PLASTIC MATERIAL INTO A LENGTH OF TUBULAR MULTI-WALL BAG STOCK, SAID MEANS HAVING A PORTION ADAPTED TO RECEIVE INTERIORLY SAID INFLATED TUBE OF PLASTIC MATERIAL, TO FOLD GUSSETS INTO SAID TUBE, AND A PORTION ADAPTED TO RECEIVE SAID WEB OF SHEET MATERAIL EXTERIORLY TO FORM SAID SHEET INTO A TUBE PROVIDED WITH GUSSETS MATCHING THOSE FORMED IN SAID TUBE OF PLASTIC MATERIAL.
Claim 2
Dependent Claim
142 words
IN AN APPARATUS FOR FORMING GUSSETS MULTI-PLY BAGS THE COMBINATION COMPRISING: (A) MEANS FOR TRANSPORTING AT LEAST ONE WEB OF SHEET MATERIAL FROM A SUPPLY ROLL THROUGH SAID APPARATUS; (B) MEANS FOR TRANSPORTING A FLATTENED, THIN-WALL TUBE OF SEAMLESS PLASTIC MATERIAL FROM A SUPPLY ROLL THROUGH SAID APPARATUS, SAID MEANS INCLUDING AIR ENTRAPMENT MEANS TO MAINTAIN A PORTION OF SAID TUBE OF PLASTIC MATERIAL INFLATED; AND (C) MEANS FOR FORMING SAID WEB OF SHEET MATERIAL AND SAID TUBE OF SEAMLESS PLASTIC MATERIAL INTO A LENGTH OF TUBULAR MULTI-WALL BAG STOCK, SAID MEANS HAVING A PORTION ADAPTED TO RECEIVE INTERIORLY SAID INFLATED TUBE OF PLASTIC MATERIAL, TO FOLD GUSSETS INTO SAID TUBE, AND A PORTION ADAPTED TO RECEIVE SAID WEB OF SHEET MATERAIL EXTERIORLY TO FORM SAID SHEET INTO A TUBE PROVIDED WITH GUSSETS MATCHING THOSE FORMED IN SAID TUBE OF PLASTIC MATERIAL.
References Cited (Backward Citations)
US3133480A
Cited
US3336846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |