US3301324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swivel for supporting drill string in submerged casing head
Assignee: A 1 Bit & Tool Co
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Filing: 1964-06-12
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Granted: 1967-01-31
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Expires: 1984-06-12
Abstract
No abstract record available.
Inventors
- 👤 Samuel H Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:54
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/12; E21B29/00; E21B29/12; E21B33/00; E21B33/02; E21B33/03; E21B33/04; E21B33/0415
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A SWIVEL ADAPTED FOR CONNECTION IN A DRILLING STRING FOR SUPPORTING A WELL TOOL IN A WELL CASING, COMPRISING: AN INNER TUBULAR MEMBER HAVING UPPER AND LOWER OPEN END PORTIONS ARRANGED FOR CONNECTION WITH THE DRILLING STRING, SAID INNER TUBULAR MEMBER HAVING A CIRCUMFERENTIAL FLANGE EXTENDING RADIALLY FROM THE MEDIAL PORTION THEREOF; A TUBULAR HOUSING ENCIRCLING THE MEDIAL PORTION OF SAID INNER TUBULAR MEMBER, SAID HOUSING HAVING AN ENLARGED CENTRAL PORTION FORMING A DOWNWARDLY FACING EXTERIOR SHOULDER; THRUST BEARING MEANS DISPOSED BETWEEN SAID CIRCUMFERENTIAL FLANGE AND SAID HOUSING FOR PREVENTING RELATIVE UP OR DOWN MOVEMENT BETWEEN SAID INNER TUBULAR MEMBER AND HOUSING; ANNULAR BEARING MEANS DISPOSED ABOVE AND BELOW SAID THRUST BEARING MEANS FOR PERMITTING RELATIVE ROTATIONAL MOVEMENT BETWEEN SAID INNER TUBULAR MEMBER AND HOUSING; AND AN ANNULAR SUPPORT MEMBER ENCIRCLING AND SUPPORTED ON SAID HOUSING BELOW SAID EXTERIOR SHOULDER IN SLIDING ENGAGEMENT WITH SAID EXTERIOR SHOULDER AND ENGAGEABLE WITH A WELL CASING TO PREVENT DOWNWARD MOVEMENT OF SAID SWIVEL RELATIVE TO THE CASING.
Claim 2
Dependent Claim
164 words
A SWIVEL ADAPTED FOR CONNECTION IN A DRILLING STRING FOR SUPPORTING A WELL TOOL IN A WELL CASING, COMPRISING: AN INNER TUBULAR MEMBER HAVING UPPER AND LOWER OPEN END PORTIONS ARRANGED FOR CONNECTION WITH THE DRILLING STRING, SAID INNER TUBULAR MEMBER HAVING A CIRCUMFERENTIAL FLANGE EXTENDING RADIALLY FROM THE MEDIAL PORTION THEREOF; A TUBULAR HOUSING ENCIRCLING THE MEDIAL PORTION OF SAID INNER TUBULAR MEMBER, SAID HOUSING HAVING AN ENLARGED CENTRAL PORTION FORMING A DOWNWARDLY FACING EXTERIOR SHOULDER; THRUST BEARING MEANS DISPOSED BETWEEN SAID CIRCUMFERENTIAL FLANGE AND SAID HOUSING FOR PREVENTING RELATIVE UP OR DOWN MOVEMENT BETWEEN SAID INNER TUBULAR MEMBER AND HOUSING; ANNULAR BEARING MEANS DISPOSED ABOVE AND BELOW SAID THRUST BEARING MEANS FOR PERMITTING RELATIVE ROTATIONAL MOVEMENT BETWEEN SAID INNER TUBULAR MEMBER AND HOUSING; AND AN ANNULAR SUPPORT MEMBER ENCIRCLING AND SUPPORTED ON SAID HOUSING BELOW SAID EXTERIOR SHOULDER IN SLIDING ENGAGEMENT WITH SAID EXTERIOR SHOULDER AND ENGAGEABLE WITH A WELL CASING TO PREVENT DOWNWARD MOVEMENT OF SAID SWIVEL RELATIVE TO THE CASING.
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |