Patent US3150573A successfully refreshed from Google Patents.
US3150573A
Expired / Lapsed
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Bag making method
Assignee: Continental Can Co Inc
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Filing: 1962-01-11
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Granted: 1964-09-29
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Expires: 1982-01-11
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Piazze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:54
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/26; B31B70/28; B31B70/30; B31B2160/00; B31B2160/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A METHOD OF FABRICATING A BAG FROM A TUBULAR SECTION OF PLASTIC SHEET MATERIAL WHICH COMPRISES FORMING A TRANSVERSE END SEAL ACROSS THE BOTTOM END OF THE TUBULAR SECTION WHILE THE TUBULAR SECTION IS IN FLATTENED CONDITION, OPENING UP THE FLATTENED AND END SEALED TUBULAR SECTION SO THAT THE TUBULAR SECTION HAS A RECTANGULAR CROSS SECTION AND FLATTENING THE PORTION THEREOF ADJACENT THE TRANSVERSE END SEAL INTO A PLANE WHICH EXTENDS TRANSVERSELY OF AND NORMAL TO THE LONG AXIS OF THE TUBULAR SECTION SO THAT TRIANGULAR SECTIONS OF THE BOTTOM FORMING PORTIONS OF THE BAG AT OPPOSITE ENDS OF SAID TRANSVERSE END SEAL EXTEND LATERALLY OF THE ADJACENT SIDE WALL FORMING PORTIONS, PROVIDING EDGE SEALS EXTENDING ACROSS SAID TRIANGULAR SECTIONS AND AT RIGHT ANGLES TO SAID TRANSVERSE END SEAL WHICH EDGE SEALS DEFINE OPPOSITE SIDE EDGES OF THE BOTTOM OF THE BAG WHEN IN ERECTED CONDITION, AND REMOVING THE PORTIONS OF THE TRIANGULAR SECTIONS WHICH EXTEND OUTWARDLY OF SAID BOTTOM EDGE SEALS AT THE ENDS OF SAID TRANSVERSE END SEAL.
Claim 2
Independent Claim
170 words
A METHOD OF FABRICATING A BAG FROM A TUBULAR SECTION OF PLASTIC SHEET MATERIAL WHICH COMPRISES FORMING A TRANSVERSE END SEAL ACROSS THE BOTTOM END OF THE TUBULAR SECTION WHILE THE TUBULAR SECTION IS IN FLATTENED CONDITION, OPENING UP THE FLATTENED AND END SEALED TUBULAR SECTION SO THAT THE TUBULAR SECTION HAS A RECTANGULAR CROSS SECTION AND FLATTENING THE PORTION THEREOF ADJACENT THE TRANSVERSE END SEAL INTO A PLANE WHICH EXTENDS TRANSVERSELY OF AND NORMAL TO THE LONG AXIS OF THE TUBULAR SECTION SO THAT TRIANGULAR SECTIONS OF THE BOTTOM FORMING PORTIONS OF THE BAG AT OPPOSITE ENDS OF SAID TRANSVERSE END SEAL EXTEND LATERALLY OF THE ADJACENT SIDE WALL FORMING PORTIONS, PROVIDING EDGE SEALS EXTENDING ACROSS SAID TRIANGULAR SECTIONS AND AT RIGHT ANGLES TO SAID TRANSVERSE END SEAL WHICH EDGE SEALS DEFINE OPPOSITE SIDE EDGES OF THE BOTTOM OF THE BAG WHEN IN ERECTED CONDITION, AND REMOVING THE PORTIONS OF THE TRIANGULAR SECTIONS WHICH EXTEND OUTWARDLY OF SAID BOTTOM EDGE SEALS AT THE ENDS OF SAID TRANSVERSE END SEAL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-29 | 1968-03-30 | 1968-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-29 | 1972-03-30 | 1972-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-29 | 1976-03-30 | 1976-09-29 | $7700.00 | Window Closed / Lapsed |