Patent US3268152A successfully refreshed from Google Patents.
US3268152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-sealing valve bag
Assignee: Thermoplastic Industries Inc
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Filing: 1964-11-27
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Granted: 1966-08-23
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Expires: 1984-11-27
Abstract
No abstract record available.
Inventors
- 👤 Henry D Swartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:41
CPC Classifications
B; B65; B65D; B65D31/00; B65D31/14; B65D31/147
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A SELF-SEALING CONTAINER, COMPRISING (A) WALLS FORMING A CONTAINER, (B) AT LEAST ONE OF SAID WALLS BEING FORMED FROM A PLASTIC MATERIAL HAVING ONE HEAT SEALING CHARACTERISTIC, (C) SAID ONE WALL BEING FORMED WITH AN OPENING THEREIN, (D) A VALVE BONDED TO THE INNER FACE OF SAID WALL AND ACROSS SAID OPENING, (E) SAID VALVE COMPRISING A PAIR OF FLEXIBLE PLASTIC PANELS JOINED ABOUT PORTIONS OF THEIR MARGINS, (F) ONE OF SAID PANELS HAVING A HEAT SEALING CHARACTERISTIC SIMILAR TO THAT OF SAID WALL, (G) SAID ONE PANEL BEING FORMED WITH AN OPENING IN REGISTER WITH SAID WALL OPENING AND BEING BONDED THERETO AT LEAST ABOUT SAID OPENING, (H) THE OTHER OF SAID PANELS BEING FORMED FROM A MATERIAL HAVING A HEAT SEALING CHARACTERISTIC HIGHER THAN THAT OF SAID WALL OR SAID OTHER PANEL.
Claim 2
Dependent Claim
134 words
A SELF-SEALING CONTAINER, COMPRISING (A) WALLS FORMING A CONTAINER, (B) AT LEAST ONE OF SAID WALLS BEING FORMED FROM A PLASTIC MATERIAL HAVING ONE HEAT SEALING CHARACTERISTIC, (C) SAID ONE WALL BEING FORMED WITH AN OPENING THEREIN, (D) A VALVE BONDED TO THE INNER FACE OF SAID WALL AND ACROSS SAID OPENING, (E) SAID VALVE COMPRISING A PAIR OF FLEXIBLE PLASTIC PANELS JOINED ABOUT PORTIONS OF THEIR MARGINS, (F) ONE OF SAID PANELS HAVING A HEAT SEALING CHARACTERISTIC SIMILAR TO THAT OF SAID WALL, (G) SAID ONE PANEL BEING FORMED WITH AN OPENING IN REGISTER WITH SAID WALL OPENING AND BEING BONDED THERETO AT LEAST ABOUT SAID OPENING, (H) THE OTHER OF SAID PANELS BEING FORMED FROM A MATERIAL HAVING A HEAT SEALING CHARACTERISTIC HIGHER THAN THAT OF SAID WALL OR SAID OTHER PANEL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |