US3301329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool for cementing and/or plugging a well or the like
Assignee: Individual
•
Filing: 1964-05-15
•
Granted: 1967-01-31
•
Expires: 1984-05-15
Abstract
No abstract record available.
Inventors
- 👤 John P Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:41
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/134
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
IN A TOOL FOR CEMENTING A WELL AT ANY PRE-SELECTED POINT IN THE WELL, THE TOOL BEING DETACHABLY CARRIED ON A DRILL STRING PIPE OR THE LIKE, THE COMBINATION COMPRISING: A SUB DETACHABLY CONNECTED TO THE DRILL STRING PIPE AND HAVING A PASSAGEWAY THERETHROUGH FOR THE FLOW OF FLUID; VALVE MEANS WITHIN THE PASSAGEWAY IN SAID SUB FOR PERMITTING FLUID TO FLOW DOWNWARDLY THROUGH THE PASSAGEWAY; A RIGID SLEEVE MEMBER DETACHABLY CARRIED ON THE LOWER END OF SAID SUB; AN ELASTOMERIC ELONGATED SOCK ATTACHED TO THE LOWER END OF SAID SLEEVE MEMBER; AN ELONGATED HOSE HAVING A PLURALITY OF PRESSURE OPERATED SLITS THEREIN SPACED LONGITUDINALLY ALONG THE SAME, SAID HOSE BEING CLOSED AT ITS LOWER END; AND MEANS CONNECTIN G THE UPPER END OF SAID HOSE TO THE SUB AND PLACING THE INTERIOR OF THE SAME IN COMMUNICATION WITH THE PASSAGEWAY IN SAID SUB BENEATH SAID VALVE MEANS.
Claim 2
Dependent Claim
148 words
IN A TOOL FOR CEMENTING A WELL AT ANY PRE-SELECTED POINT IN THE WELL, THE TOOL BEING DETACHABLY CARRIED ON A DRILL STRING PIPE OR THE LIKE, THE COMBINATION COMPRISING: A SUB DETACHABLY CONNECTED TO THE DRILL STRING PIPE AND HAVING A PASSAGEWAY THERETHROUGH FOR THE FLOW OF FLUID; VALVE MEANS WITHIN THE PASSAGEWAY IN SAID SUB FOR PERMITTING FLUID TO FLOW DOWNWARDLY THROUGH THE PASSAGEWAY; A RIGID SLEEVE MEMBER DETACHABLY CARRIED ON THE LOWER END OF SAID SUB; AN ELASTOMERIC ELONGATED SOCK ATTACHED TO THE LOWER END OF SAID SLEEVE MEMBER; AN ELONGATED HOSE HAVING A PLURALITY OF PRESSURE OPERATED SLITS THEREIN SPACED LONGITUDINALLY ALONG THE SAME, SAID HOSE BEING CLOSED AT ITS LOWER END; AND MEANS CONNECTIN G THE UPPER END OF SAID HOSE TO THE SUB AND PLACING THE INTERIOR OF THE SAME IN COMMUNICATION WITH THE PASSAGEWAY IN SAID SUB BENEATH SAID VALVE MEANS.
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 |