Patent US3216172A successfully refreshed from Google Patents.
US3216172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for sealing vacuum pack bag
Assignee: Continental Can Co Inc
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Filing: 1962-08-10
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Granted: 1965-11-09
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Expires: 1982-08-10
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Piazze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:15
CPC Classifications
B; B65; B65B; B65B31/00; B65B31/04; B65B31/046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A METHOD OF SEALING A FLEXIBLE HEAT-SEALABLE WALL OF A CONTAINER TO AN INTERNAL HEAT-SEALABLE PATCH WHICH EXTENDS OVER AN AIR-EVACUATING OPENING IN SAID WALL AND PROVIDES AN AIR-EVACUATING PASSAGE BETWEEN SAID OPENING AND THE INTERIOR OF SAID CONTAINER, THE STEPS OF PLACING SAID WALL AGAINST AN AIR-EVACUATING MEMBER WITH SAID AIR-EVACUATING OPENING IN COMMUNICATION WITH SAID AIREVACUATING MEMBER, EXHAUSTING AIR THROUGH SAID OPENING AND SAID AIR-EVACUATING PASSAGE AND THEREBY EVACUATING AIR FROM THE INTERIOR OF THE CONTAINER, APPLYING A HEATED SEALING MEMBER AGAINST THE OUTER SIDE OF SAID WALL AROUND THE AIR-EVACUATING MEMBER BEFORE TERMINATING THE EVACUATION OF AIR FROM THE CONTAINER, AND MOVING THE HEATED SEALING MEMBER AGAINST THE WALL TO PRESS THE WALL AGAINST SAID PATCH TO SEAL SAID WALL AND PATCH TOGETHER AND CLOSE FLUID COMMUNICATION BETWEEN THE INTERIOR OF THE CONTAINER AND THE OPENING THROUGH THE AIR-EVACUATING PASSAGE.
Claim 2
Independent Claim
143 words
A METHOD OF SEALING A FLEXIBLE HEAT-SEALABLE WALL OF A CONTAINER TO AN INTERNAL HEAT-SEALABLE PATCH WHICH EXTENDS OVER AN AIR-EVACUATING OPENING IN SAID WALL AND PROVIDES AN AIR-EVACUATING PASSAGE BETWEEN SAID OPENING AND THE INTERIOR OF SAID CONTAINER, THE STEPS OF PLACING SAID WALL AGAINST AN AIR-EVACUATING MEMBER WITH SAID AIR-EVACUATING OPENING IN COMMUNICATION WITH SAID AIREVACUATING MEMBER, EXHAUSTING AIR THROUGH SAID OPENING AND SAID AIR-EVACUATING PASSAGE AND THEREBY EVACUATING AIR FROM THE INTERIOR OF THE CONTAINER, APPLYING A HEATED SEALING MEMBER AGAINST THE OUTER SIDE OF SAID WALL AROUND THE AIR-EVACUATING MEMBER BEFORE TERMINATING THE EVACUATION OF AIR FROM THE CONTAINER, AND MOVING THE HEATED SEALING MEMBER AGAINST THE WALL TO PRESS THE WALL AGAINST SAID PATCH TO SEAL SAID WALL AND PATCH TOGETHER AND CLOSE FLUID COMMUNICATION BETWEEN THE INTERIOR OF THE CONTAINER AND THE OPENING THROUGH THE AIR-EVACUATING PASSAGE.
References Cited (Backward Citations)
US2387812A
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US2778171A
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US2708541A
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US2928216A
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US2896385A
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US3026656A
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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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |