US3294615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic bag making machine
Assignee: Container Corp
•
Filing: 1963-07-05
•
Granted: 1966-12-27
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Expires: 1983-07-05
Abstract
No abstract record available.
Inventors
- 👤 Long Fleming Desmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:31
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/81; B29C66/814; B29C66/8145; B29C66/81457; B29C65/00; B29C65/02; B29C65/18; B29C65/24; B29C65/30; B29C65/305; B29C65/74; B29C65/743; B29C65/7441; B29C65/78; B29C65/7858; B29C65/7888; B29C65/7891; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/20; B29C66/24; B29C66/244; B29C66/40; B29C66/41; B29C66/43; B29C66/70; B29C66/72; B29C66/727; B29C66/82; B29C66/824; B29C66/8242; B29C66/83; B29C66/832; B29C66/8322; B31; B31B; B31B70/00; B31B70/14; B29C66/71; B29C66/816; B29C66/8167; B29C66/90; B29C66/91; B29C66/914; B29C66/9141; B29C66/91421; B29C66/91431; B29C66/9161; B29C66/91641; B29C66/919; B29C66/94; B29C66/949; B31B2155/00; B31B2170/00; B31B2170/20; B31B2241/00; B31B50/00; B31B50/25; B31B50/252; B31B70/60; B31B70/64; B31B70/642; Y; Y10; Y10T; Y10T156/00; Y10T156/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
IN A MECHANISM FOR FORMING CONTOURED BAGS FROM TWO SUPERPOSED LAYER OF THERMOSPLASTIC FILM, THE COMBINATION OF TWO SPACED, COOPERATING DIE ELEMENTS, A PAIR OF THIN, FLEXIBLE SEPARATOR MEMBERS EXTENDING BETWEEN THE DIE ELEMENTS, THE SEPARATOR MEMBERS BEING ARRANGED TO RECEIVE TWO SUPERPOSED, THERMOPLASTIC FILMS THEREBETWEEN MEANS FOR PRODUCING RELATIVE MOVEMENT BETWEEN THE DIE ELEMENTS TO CAUSE THEM TO EXERT PRESSURE UPON THE FILMS THROUGH THE SEPARATOR MEMBERS, ONE OF THE DIES BEING FORMED OF HARD-SURFACED, HEAT-CONDUCTING MATERIAL, MEANS FOR SUPPLYING HEAT THERETO, SAID HARD-SURFACED DIE BEING OF EXTENDED LENGTH TO FORM AT LEAST THE MAJOR PORTION OF THE PERIMETER OF THE BAG AND HAVING A FLATTENED SURFACE OF RESTRICTED WIDTH SUBSTANTIALLY PARALLEL TO THE PLANE OF THE SUPERPOSED FILMS, THE COMPANION DIE ELEMENT SERVING AS THE PRESSURE RECEIVING DIE, SAID ELEMENT COMPRISING A RELATIVELY THIN SURFACE SHEET OF NEOPRENE RUBBER.
Claim 2
Dependent Claim
141 words
IN A MECHANISM FOR FORMING CONTOURED BAGS FROM TWO SUPERPOSED LAYER OF THERMOSPLASTIC FILM, THE COMBINATION OF TWO SPACED, COOPERATING DIE ELEMENTS, A PAIR OF THIN, FLEXIBLE SEPARATOR MEMBERS EXTENDING BETWEEN THE DIE ELEMENTS, THE SEPARATOR MEMBERS BEING ARRANGED TO RECEIVE TWO SUPERPOSED, THERMOPLASTIC FILMS THEREBETWEEN MEANS FOR PRODUCING RELATIVE MOVEMENT BETWEEN THE DIE ELEMENTS TO CAUSE THEM TO EXERT PRESSURE UPON THE FILMS THROUGH THE SEPARATOR MEMBERS, ONE OF THE DIES BEING FORMED OF HARD-SURFACED, HEAT-CONDUCTING MATERIAL, MEANS FOR SUPPLYING HEAT THERETO, SAID HARD-SURFACED DIE BEING OF EXTENDED LENGTH TO FORM AT LEAST THE MAJOR PORTION OF THE PERIMETER OF THE BAG AND HAVING A FLATTENED SURFACE OF RESTRICTED WIDTH SUBSTANTIALLY PARALLEL TO THE PLANE OF THE SUPERPOSED FILMS, THE COMPANION DIE ELEMENT SERVING AS THE PRESSURE RECEIVING DIE, SAID ELEMENT COMPRISING A RELATIVELY THIN SURFACE SHEET OF NEOPRENE RUBBER.
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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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |