Patent US2211913A successfully refreshed from Google Patents.
US3074483A
Expired / Lapsed
US
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Tool for use in cementing well casing
Assignee: B&W Inc
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Filing: 1960-09-06
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Granted: 1963-01-22
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Expires: 1980-09-06
Abstract
No abstract record available.
Inventors
- 👤 James R Solum
- 👤 William C Hempel
- 👤 Jr Conrad R Solum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:22
CPC Classifications
E; E21; E21B; E21B37/00; E21B37/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
IN A DEVICE OF THE CLASS DESCRIBED FOR GENERATING TURBULENCE IN A MOBILE MIXTURE EXISTING IN THE ANNULAR SPACE BETWEEN A WELL PIPE AND A SURROUNDING WALL UPON MOVEMENT OF THE WELL PIPE RELATIVE TO THE SURROUNDING WALL, SAID DEVICE ADAPTED TO BE MOUNTED ON THE OUTER SURFACE OF THE WELL PIPE, THE COMBINATION OF: A CARRIER, A PLURALITY OF TURBULENCE GENERATING ELEMENTS MOUNTED ON SAID CARRIER, EACH OF SAID ELEMENTS INCLUDING PART OF A CONTINUOUS LENGTH OF MULTIPLE STRAND WIRE CABLE FORMING A LOOP EXTENDING OUTWARDLY FROM THE WELL PIPE TO CONTACT THE SURROUNDING WALL AND A SECOND SMALLER LOOP EXTENDING OUTWARDLY FROM THE WELL PIPE TO EXTEND INTO SAID ANNULAR SPACE, AND MEANS FOR ANCHORING THE LOOPS OF CABLE TO THE CARRIER.
Claim 2
Dependent Claim
124 words
IN A DEVICE OF THE CLASS DESCRIBED FOR GENERATING TURBULENCE IN A MOBILE MIXTURE EXISTING IN THE ANNULAR SPACE BETWEEN A WELL PIPE AND A SURROUNDING WALL UPON MOVEMENT OF THE WELL PIPE RELATIVE TO THE SURROUNDING WALL, SAID DEVICE ADAPTED TO BE MOUNTED ON THE OUTER SURFACE OF THE WELL PIPE, THE COMBINATION OF: A CARRIER, A PLURALITY OF TURBULENCE GENERATING ELEMENTS MOUNTED ON SAID CARRIER, EACH OF SAID ELEMENTS INCLUDING PART OF A CONTINUOUS LENGTH OF MULTIPLE STRAND WIRE CABLE FORMING A LOOP EXTENDING OUTWARDLY FROM THE WELL PIPE TO CONTACT THE SURROUNDING WALL AND A SECOND SMALLER LOOP EXTENDING OUTWARDLY FROM THE WELL PIPE TO EXTEND INTO SAID ANNULAR SPACE, AND MEANS FOR ANCHORING THE LOOPS OF CABLE TO THE CARRIER.
References Cited (Backward Citations)
US2826253A
Cited
US2881840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |