Patent US3679048A successfully refreshed from Google Patents.
US3679048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wrapper with tear tabs of heat-shrinking synthetic resin film
Assignee: Individual
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Filing: 1970-04-01
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Granted: 1972-07-25
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Expires: 1990-04-01
Abstract
Abstract A product or article is enclosed in heat-shrinking synthetic resin film having opposite ends which are folded closed to provide tear tabs along the full width of the article. The article in the film is subjected to heat to shrink the film into contact with the article and the folded ends may be subjected to heat to seal them. The tear tabs may include three or more layers of material to give added strength.
Inventors
- 👤 Masaaki Fujio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:39
CPC Classifications
B; B65; B65D; B65D75/00; B65D75/04; B65D75/06; B65D75/12; B65D75/002
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
127 words
A wrapper comprising: a single ply sheet member of heat shrinking material formed into a tube with opposite open ends, said tube having continuous peripheral opening edges adjacent said opposite ends; said peripheral edges of each of said opposite ends being closed in flat facing relationship and joined together in an air tight seal to form a tear tab, said tear tab being elongated in shape and having a double ply thickness along its entire length; said tear tab extending approximately perpendicularly outwardly with respect to said sheet member so as to be free for grasping; said tabs being double ply and the entire remainder of said sheet member being single ply whereby tension applied to said tear tab will cause tearing closely adjacent said tear tab.
Claim 2
Dependent Claim
127 words
A wrapper comprising: a single ply sheet member of heat shrinking material formed into a tube with opposite open ends, said tube having continuous peripheral opening edges adjacent said opposite ends; said peripheral edges of each of said opposite ends being closed in flat facing relationship and joined together in an air tight seal to form a tear tab, said tear tab being elongated in shape and having a double ply thickness along its entire length; said tear tab extending approximately perpendicularly outwardly with respect to said sheet member so as to be free for grasping; said tabs being double ply and the entire remainder of said sheet member being single ply whereby tension applied to said tear tab will cause tearing closely adjacent said tear tab.
Claim 3
Dependent Claim
26 words
The structure of claim 1 wherein said tear tab is formed by the peripheral opening edge being folded and laminated to provide three thicknesses of material.
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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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |