Patent US3307390A successfully refreshed from Google Patents.
US3307390A
Expired / Lapsed
US
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Method of and apparatus for testing containers
Assignee: Fort James Corp
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Filing: 1963-09-12
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Granted: 1967-03-07
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Expires: 1983-09-12
Abstract
No abstract record available.
Inventors
- 👤 Behrens Herbert Charles
- 👤 Sheninger William Addison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:59
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/32; G01M3/3236; G01M3/3218
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A METHOD OF DETECTING LEAKS IN AN OPEN ENDED CONTAINER WHILE SIMULTANEOUSLY FORMING A ROLLED BEAD ON THE OPEN END THEREOF COMPRISING THE STEPS OF: CLOSING THE OPEN END OF THE CONTAINER WHILE SIMULTANEOUSLY FORMING AN OUTWARDLY ROLLED BEAD THEREON, INTRODUCING A GAS AT A PREDETERMINED PRESSURE AND RATE OF FLOW INTO SAID CONTAINER DURING SAID BEAD FORMING OPERATION, AND MEASURING THE PRESSURE INCREASE IN SAID CONTAINER DURING SAID BEAD FORMING OPERATION.
Claim 2
Independent Claim
72 words
A METHOD OF DETECTING LEAKS IN AN OPEN ENDED CONTAINER WHILE SIMULTANEOUSLY FORMING A ROLLED BEAD ON THE OPEN END THEREOF COMPRISING THE STEPS OF: CLOSING THE OPEN END OF THE CONTAINER WHILE SIMULTANEOUSLY FORMING AN OUTWARDLY ROLLED BEAD THEREON, INTRODUCING A GAS AT A PREDETERMINED PRESSURE AND RATE OF FLOW INTO SAID CONTAINER DURING SAID BEAD FORMING OPERATION, AND MEASURING THE PRESSURE INCREASE IN SAID CONTAINER DURING SAID BEAD FORMING OPERATION.
References Cited (Backward Citations)
US1087074A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |