Patent US2755863A successfully refreshed from Google Patents.
US2755863A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricator device
Assignee: Atlantic Richfield Co
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Filing: 1952-07-25
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Granted: 1956-07-24
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Expires: 1972-07-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry N Stansbury
- 👤 Jack C Webber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:27
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/068
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
MEANS FOR INSERTING A TREATING MASS IN THE FORM OF A SUBSTANTIALLY ELONGATED CYCLINDRICAL STICK INTO A WELL THROUGH A WALL CONDUIT INCLUDING A VERTICAL STRING OF WALL TUBING AND VALVE MEANS IN SAID WELL CONDUIT ADJACENT THE UPPER END OF SAID TUBING AND ADAPTED TO CONTROL FLOW THROUGH SAID CONDUIT, SAID MEANS COMPRISING A SUPPORT ELEMENT RIGIDLY ATTACHED TO SAID CONDUIT AND CARRYING A PIVOT, AN ELONGATED TUBULAR MEMBER, CONNECTING MEANS HAVING ONE EXTREMITY ATTACHED TO SAID TUBULAR MEMBER AND THE OPPOSITE EXTREMITY MOUNTED ON SAID PIVOT AND ROTATABLE THEREON IN A MANNER SUCH THAT SAID TUBULAR MEMBER MAY BE ALTERNATELY MOVED INTO AND OUT OF AXIAL ALIGNMENT WITH SAID WELL CONDUIT, SAID TUBULAR MEMBER BEING SEALED AT ITS UPPER END AND OPEN AT ITS LOWER END TO PERMIT INSERTION OF SAID TREATING MASS WHEN SAID TUBULAR MEMBER IS OUT OF AXIAL ALIGNMENT WITH SAID CONDUIT AND
Claim 2
Dependent Claim
148 words
MEANS FOR INSERTING A TREATING MASS IN THE FORM OF A SUBSTANTIALLY ELONGATED CYCLINDRICAL STICK INTO A WELL THROUGH A WALL CONDUIT INCLUDING A VERTICAL STRING OF WALL TUBING AND VALVE MEANS IN SAID WELL CONDUIT ADJACENT THE UPPER END OF SAID TUBING AND ADAPTED TO CONTROL FLOW THROUGH SAID CONDUIT, SAID MEANS COMPRISING A SUPPORT ELEMENT RIGIDLY ATTACHED TO SAID CONDUIT AND CARRYING A PIVOT, AN ELONGATED TUBULAR MEMBER, CONNECTING MEANS HAVING ONE EXTREMITY ATTACHED TO SAID TUBULAR MEMBER AND THE OPPOSITE EXTREMITY MOUNTED ON SAID PIVOT AND ROTATABLE THEREON IN A MANNER SUCH THAT SAID TUBULAR MEMBER MAY BE ALTERNATELY MOVED INTO AND OUT OF AXIAL ALIGNMENT WITH SAID WELL CONDUIT, SAID TUBULAR MEMBER BEING SEALED AT ITS UPPER END AND OPEN AT ITS LOWER END TO PERMIT INSERTION OF SAID TREATING MASS WHEN SAID TUBULAR MEMBER IS OUT OF AXIAL ALIGNMENT WITH SAID CONDUIT AND
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) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |