Patent US3173580A successfully refreshed from Google Patents.
US3173580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid containers
Assignee: Polaroid Corp
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Filing: 1962-09-21
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Granted: 1965-03-16
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Expires: 1982-09-21
Abstract
No abstract record available.
Inventors
- 👤 John E Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:52
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/28; G03B17/32; G03B17/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A RUPTURABLE SINGLE-USE, FLUID CONTAINER HAVING A PAIR OF OPPOSED WALLS SECURED TOGETHER TO PROVIDE A LIQUID RETAINING CAVITY, AT LEAST ONE OF SAID WALLS BEING FLEXIBLE AND DEFORMABLE, EACH OF SAID WALLS COMPRISING A PLURALITY OF LAYERS, AT LEAST ONE OF SAID LAYERS BEING SUBSTANTIALLY VAPOR IMPERVIOUS, AND THE INNER LAYER OF EACH OF SAID WALLS COMPRISING A POLYMERIC MATERIAL CONTAINING A MAJOR PORTION OF POYLMERIZED VINYL CHLORIDE AND 0 TO 15% PLASTICIZER, THE MARGINAL PORTIONS OF SAID PAIR OF OPPOSED WALLS BEING ADHERED TOGETHER BY SAID POLYMERIC MATERIAL BONDED TO ITSELF, WHEREIN SAID BONDING IS ACHIEVED BY THE APPLICATION OF TEMPERATURES RANGING FROM ABOUT 285-310*C. TO THE MARGINAL PORTIONS OF ONE EDGE AND THE APPLICATION OF TEMPERATURES RANGING FROM ABOUT 360-410*C. TO THE REMAINING EDGES, WHEREBY SAID CONTAINER PREFERENTIALLY OPENS ALONG SAID FIRST-MENTIONED EDGE UPON THE APPLICATION OF PRESSURE TO SAID CONTAINER.
Claim 2
Dependent Claim
144 words
A RUPTURABLE SINGLE-USE, FLUID CONTAINER HAVING A PAIR OF OPPOSED WALLS SECURED TOGETHER TO PROVIDE A LIQUID RETAINING CAVITY, AT LEAST ONE OF SAID WALLS BEING FLEXIBLE AND DEFORMABLE, EACH OF SAID WALLS COMPRISING A PLURALITY OF LAYERS, AT LEAST ONE OF SAID LAYERS BEING SUBSTANTIALLY VAPOR IMPERVIOUS, AND THE INNER LAYER OF EACH OF SAID WALLS COMPRISING A POLYMERIC MATERIAL CONTAINING A MAJOR PORTION OF POYLMERIZED VINYL CHLORIDE AND 0 TO 15% PLASTICIZER, THE MARGINAL PORTIONS OF SAID PAIR OF OPPOSED WALLS BEING ADHERED TOGETHER BY SAID POLYMERIC MATERIAL BONDED TO ITSELF, WHEREIN SAID BONDING IS ACHIEVED BY THE APPLICATION OF TEMPERATURES RANGING FROM ABOUT 285-310*C. TO THE MARGINAL PORTIONS OF ONE EDGE AND THE APPLICATION OF TEMPERATURES RANGING FROM ABOUT 360-410*C. TO THE REMAINING EDGES, WHEREBY SAID CONTAINER PREFERENTIALLY OPENS ALONG SAID FIRST-MENTIONED EDGE UPON THE APPLICATION OF PRESSURE TO SAID CONTAINER.
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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) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |