Patent US2722602A successfully refreshed from Google Patents.
Patent US3358415A successfully refreshed from Google Patents.
US3358415A
Expired / Lapsed
US
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Preventing deformation of vacuum formed containers
Assignee: Phillips Petroleum Co
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Filing: 1964-11-09
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Granted: 1967-12-19
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Expires: 1984-11-09
Abstract
No abstract record available.
Inventors
- 👤 William F Kurfirst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:09
CPC Classifications
B; B65; B65B; B65B31/00; B65B31/04; B65B31/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A METHOD OF VACUUM PACKING A SEMIRIGID FORMED CONTAINER WITHOUT INCURRING DEFORMATION OF THE FORMED CONTAINER, THE WALLS OF SAID CONTAINER BEING SUFFICIENTLY FLEXIBLE THAT DEFORMATION THEREOF NORMALLY WOULD OCCUR IF THE CONTAINER WERE EMPLOYED IN VACUUM PACKING, WHICH METHOD COMPRISES OVERFILLING SAID FORMED CONTAINER WITH THE MATERIAL TO BE PACKAGED, THE VOLUME OF MATERIAL SO EMPLOYED BEING GREATER THAN THE VOLUME OF SAID FORMED CONTAINER BY AN AMOUNT SUCH THAT THE OUTWARD PRESSURE OF SAID MATERIAL IN THE FINAL PACKAGE SUBSTANTIALLY BALANCES THE INWARD PRESSURE OF THE ATMOSPHERE, COVERING THE THUS OVERFILLED FORMED CONTAINER WITH A PLIABLE FILM TO FORM A PACKAGE, SUBJECTING THE INTERIOR OF SAID PACKAGE TO THE DESIRED VACUUM CONDITIONS, AND SEALING SAID PACKAGE.
Claim 2
Independent Claim
118 words
A METHOD OF VACUUM PACKING A SEMIRIGID FORMED CONTAINER WITHOUT INCURRING DEFORMATION OF THE FORMED CONTAINER, THE WALLS OF SAID CONTAINER BEING SUFFICIENTLY FLEXIBLE THAT DEFORMATION THEREOF NORMALLY WOULD OCCUR IF THE CONTAINER WERE EMPLOYED IN VACUUM PACKING, WHICH METHOD COMPRISES OVERFILLING SAID FORMED CONTAINER WITH THE MATERIAL TO BE PACKAGED, THE VOLUME OF MATERIAL SO EMPLOYED BEING GREATER THAN THE VOLUME OF SAID FORMED CONTAINER BY AN AMOUNT SUCH THAT THE OUTWARD PRESSURE OF SAID MATERIAL IN THE FINAL PACKAGE SUBSTANTIALLY BALANCES THE INWARD PRESSURE OF THE ATMOSPHERE, COVERING THE THUS OVERFILLED FORMED CONTAINER WITH A PLIABLE FILM TO FORM A PACKAGE, SUBJECTING THE INTERIOR OF SAID PACKAGE TO THE DESIRED VACUUM CONDITIONS, AND SEALING SAID PACKAGE.
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) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |