Patent US3354955A successfully refreshed from Google Patents.
US3354955A
Expired / Lapsed
US
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Method and apparatus for closing and sealing openings in a well casing
Assignee: Individual
•
Filing: 1964-04-24
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Granted: 1967-11-28
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Expires: 1984-04-24
Abstract
No abstract record available.
Inventors
- 👤 William B Berry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:52
CPC Classifications
E; E21; E21B; E21B29/00; E21B29/10; E21B43/00; E21B43/02; E21B43/10; E21B43/103
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
THE METHOD OF SEALING PERFORATIONS AND SLITS IN THE CASING OF A WELL, WITH A UNITARY ELONGATED HOLLOW SEALANT MEMBER HAVING A NORMAL EXTERNAL DIAMETER COMMENSURATE WITH THE INTERNAL DIAMETER OF THE CASING, WHICH COMPRISES LONGITUDINALLY CRIMPING SAID SEALANT MEMBER FROM ONE END TO THE OTHER TO FORM AN INTURNED BUCKLED PORTION AND REDUCED ITS EXTERNAL DIAMETER, COMPLETELY ENCIRCLING SAID SEALANT MEMBER AT SPACED POINTS THROUGHOUT ITS LENGTH WITH A PLURALITY OF RETAINING MEANS FOR SECURING SAID SEALANT MEMBER IN SAID CRIMPED CONDITION, LOWERING SAID SEALANT MEMBER WITHIN SAID CASING TO A POINT ADJACENT SAID PERFORATIONS, REMOVING SAID RETAINING MEANS TO ALLOW SAID SEALANT MEMBER TO EXPAND INTO ENGAGEMENT WITH SAID CASING AND OVERLIE THE PERFORATIONS THEREIN.
Claim 2
Independent Claim
117 words
THE METHOD OF SEALING PERFORATIONS AND SLITS IN THE CASING OF A WELL, WITH A UNITARY ELONGATED HOLLOW SEALANT MEMBER HAVING A NORMAL EXTERNAL DIAMETER COMMENSURATE WITH THE INTERNAL DIAMETER OF THE CASING, WHICH COMPRISES LONGITUDINALLY CRIMPING SAID SEALANT MEMBER FROM ONE END TO THE OTHER TO FORM AN INTURNED BUCKLED PORTION AND REDUCED ITS EXTERNAL DIAMETER, COMPLETELY ENCIRCLING SAID SEALANT MEMBER AT SPACED POINTS THROUGHOUT ITS LENGTH WITH A PLURALITY OF RETAINING MEANS FOR SECURING SAID SEALANT MEMBER IN SAID CRIMPED CONDITION, LOWERING SAID SEALANT MEMBER WITHIN SAID CASING TO A POINT ADJACENT SAID PERFORATIONS, REMOVING SAID RETAINING MEANS TO ALLOW SAID SEALANT MEMBER TO EXPAND INTO ENGAGEMENT WITH SAID CASING AND OVERLIE THE PERFORATIONS THEREIN.
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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) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |