US2899347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making bag closure
Assignee: —
•
Filing: —
•
Granted: 1959-08-11
•
Expires: 1976-08-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:25
CPC Classifications
B; B65; B65D; B65D33/00; B65D33/16; B65D33/1691; B29; B29C; B29C65/00; B29C65/02; B29C65/40; B29C65/42; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/304; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/43121; B29C66/80; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C66/83413; B29C2793/00; B29L; B29L2009/00; B29L2031/00; B29L2031/712; B29L2031/7128; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1023; Y10T156/1051; Y10T156/1052; Y10T156/1056; Y10T156/108
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A METHOD OF PROVIDING A UNITARY BAG CLOSURE WHICH COMPRISES PUNCHING A ROW OF SPACED APART PERFORATIONS IN AT LEAST ONE CUT END OF A TUBULAR BAG BLANK ADJACENT TO THE END EDGE THEREOF, CONTINUOUSLY EXTRUDING A STRIP OF HOT SOFTENED THERMOPLASTIC RESINOUS MATERIAL TO OPPOSITE SIDES OF SAID PERFORATED BAG END OVER THE PERFORATIONS, PRESSING SAID THERMOPLASTIC RESINOUS MATERIAL THROUGH SAID PERFORATIONS WHILE SAID STRIP IS IN A HEAT SOFTENED CONDITION TO BOND THE RESINOUS MATERIAL TO ITSELF AND THEREAFTER TRIMMING THE ENDS OF SAID STRIP BEYOND THE SIDE EDGES OF THE BAG.
Claim 2
Independent Claim
94 words
A METHOD OF PROVIDING A UNITARY BAG CLOSURE WHICH COMPRISES PUNCHING A ROW OF SPACED APART PERFORATIONS IN AT LEAST ONE CUT END OF A TUBULAR BAG BLANK ADJACENT TO THE END EDGE THEREOF, CONTINUOUSLY EXTRUDING A STRIP OF HOT SOFTENED THERMOPLASTIC RESINOUS MATERIAL TO OPPOSITE SIDES OF SAID PERFORATED BAG END OVER THE PERFORATIONS, PRESSING SAID THERMOPLASTIC RESINOUS MATERIAL THROUGH SAID PERFORATIONS WHILE SAID STRIP IS IN A HEAT SOFTENED CONDITION TO BOND THE RESINOUS MATERIAL TO ITSELF AND THEREAFTER TRIMMING THE ENDS OF SAID STRIP BEYOND THE SIDE EDGES OF THE BAG.
References Cited (Backward Citations)
US1736181A
Cited
US2195740A
Cited
US2391938A
Cited
US2403756A
Cited
US2622053A
Cited
US2676704A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |