US3080926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casing centralizer with replaceable wings
Assignee: Weatherford Oil Tool Co Inc
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Filing: 1961-04-06
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Granted: 1963-03-12
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Expires: 1981-04-06
Abstract
No abstract record available.
Inventors
- 👤 Jr Thomas E Remp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:45
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/10; E21B17/1042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A CENTRALIZER FOR A TUBULAR MEMBER COMPRISING A TUBULAR BODY FOR RECEPTION AROUND THE MEMBER AND HAVING A SLOT AND A SPACER RIB INSERTED IN SAID SLOT AND PROJECTING RADIALLY OUTWARDLY FROM SAID BODY, SAID RIB HAVING A BODY PORTION OF RESILIENT MATERIAL AND A PLATE-LIKE BASE PORTION OF RIGID MATERIAL, SAID BASE AND BODY PORTIONS TERMINATING PERIPHERALLY IN PARALLEL SHOULDERS FORMING A GROOVE THEREBETWEEN SHAPED TO EMBRACE THE PERIPHERY OF THE SLOT IN SAID TUBULAR BODY FOR MAINTAINING SAID SPACER RIB PROPERLY POSITIONED.
Claim 2
Dependent Claim
84 words
A CENTRALIZER FOR A TUBULAR MEMBER COMPRISING A TUBULAR BODY FOR RECEPTION AROUND THE MEMBER AND HAVING A SLOT AND A SPACER RIB INSERTED IN SAID SLOT AND PROJECTING RADIALLY OUTWARDLY FROM SAID BODY, SAID RIB HAVING A BODY PORTION OF RESILIENT MATERIAL AND A PLATE-LIKE BASE PORTION OF RIGID MATERIAL, SAID BASE AND BODY PORTIONS TERMINATING PERIPHERALLY IN PARALLEL SHOULDERS FORMING A GROOVE THEREBETWEEN SHAPED TO EMBRACE THE PERIPHERY OF THE SLOT IN SAID TUBULAR BODY FOR MAINTAINING SAID SPACER RIB PROPERLY POSITIONED.
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) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |