Patent US3095040A successfully refreshed from Google Patents.
US3095040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Access valve for completing oil wells
Assignee: Bramlett Oil Field Service Inc
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Filing: 1961-06-30
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Granted: 1963-06-25
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Expires: 1981-06-30
Abstract
No abstract record available.
Inventors
- 👤 Merlin F Bramlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:51
CPC Classifications
E; E21; E21B; E21B34/00; E21B34/06; E21B34/063
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
AN ACCESS VALVE FOR TEMPORARILY CLOSING A FLOW TUBE IN AN OIL WELL HAVING A CASING, AND A PACKER IN SAID CASING ABOUT SAID TUBE, A TUBULAR BODY HAVING MEANS THEREON FOR THREADED ATTACHMENT TO THE LOWER END OF SAID FLOW TUBE BELOW SAID PACKER, THE SAID BODY HAVING A SMOOTH INTERNAL BORE EQUAL IN DIAMETER TO THAT OF SAID FLOW TUBE AND HAVING AN INTERNALLY BEVELED SEAT FORMED IN ITS LOWERMOST END, SEALING MEANS INTERNALLY OF SAID BODY ADJACENT TO SAID BEVELED SEAT, A PLUG HAVING A FLANGED PORTION ON SAID BEVELED SEAT AND EXTENDING INTO SAID BODY CLOSING THE SAME, THE SAID BODY HAVING A PORT IN ONE SIDE ABOVE SAID BEVELED SEAT, AND A BREAK-OFF PLUG CLOSING SAID PORT CAPABLE OF BEING BROKEN AWAY TO OPEN SAID PORT BY THE FORCE OF A TOOL LOWERED INTO SAID FLOW TUBE.
Claim 2
Dependent Claim
142 words
AN ACCESS VALVE FOR TEMPORARILY CLOSING A FLOW TUBE IN AN OIL WELL HAVING A CASING, AND A PACKER IN SAID CASING ABOUT SAID TUBE, A TUBULAR BODY HAVING MEANS THEREON FOR THREADED ATTACHMENT TO THE LOWER END OF SAID FLOW TUBE BELOW SAID PACKER, THE SAID BODY HAVING A SMOOTH INTERNAL BORE EQUAL IN DIAMETER TO THAT OF SAID FLOW TUBE AND HAVING AN INTERNALLY BEVELED SEAT FORMED IN ITS LOWERMOST END, SEALING MEANS INTERNALLY OF SAID BODY ADJACENT TO SAID BEVELED SEAT, A PLUG HAVING A FLANGED PORTION ON SAID BEVELED SEAT AND EXTENDING INTO SAID BODY CLOSING THE SAME, THE SAID BODY HAVING A PORT IN ONE SIDE ABOVE SAID BEVELED SEAT, AND A BREAK-OFF PLUG CLOSING SAID PORT CAPABLE OF BEING BROKEN AWAY TO OPEN SAID PORT BY THE FORCE OF A TOOL LOWERED INTO SAID FLOW TUBE.
References Cited (Backward Citations)
US1854477A
Cited
US2690807A
Cited
US2922479A
Cited
US2903074A
Cited
US3029875A
Cited
US3003565A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |