US3322192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Offshore well apparatus
Assignee: Cooper Industries LLC
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Filing: 1965-02-16
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Granted: 1967-05-30
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Expires: 1985-02-16
Abstract
No abstract record available.
Inventors
- 👤 Albert E Woelfel
- 👤 Marvin R Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:11
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
OFFSHORE WELL APPARATUS, COMPRISING A WELLHEAD AT THE UPPER END OF A WELL BELOW THE WATER LEVEL AND HAVING THREE PASSAGES THERETHROUGH, A LINE PROVIDING A CONTINUATION OF THE UPPER END OF EACH OF SAID PASSAGES FOR EXTENSION TO A REMOTE LOCATION, A SERVICE TUBING EXTENDING DOWNWARDLY FROM ONE OF SAID PASSAGES, A VALVE BODY IN THE WELL BENEATH THE WELLHEAD AND HAVING THREE CHAMBERS THEREIN, A FIRST OF SAID CHAMBERS CONNECTING WITH SAID SERVICE TUBING AND THE SECOND AND THIRD CHAMBERS COMMUNICATING WITH CONDUITS WITHIN THE WELL WHICH SEPARATELY COMMUNICATE WITH THE OTHER TWO PASSAGES THROUGH SAID WELLHEAD, MEANS INCLUDING A VALVE MEMBER MOVABLE BETWEEN POSITIONS WITHIN THE FIRST CHAMBER FOR CONNECTING THE SERVICE TUBING SELECTIVELY WITH ONE OR THE OTHER OF SAID CONDUITS AND SEALING SAID CONDUITS FROM ONE ANOTHER, AND PLUG MEANS PUMPABLE THROUGH SAID SERVICE TUBING AND LINE FOR MOVING THE VALVE MEMBER BETWEEN SAID POSITIONS.
Claim 2
Dependent Claim
150 words
OFFSHORE WELL APPARATUS, COMPRISING A WELLHEAD AT THE UPPER END OF A WELL BELOW THE WATER LEVEL AND HAVING THREE PASSAGES THERETHROUGH, A LINE PROVIDING A CONTINUATION OF THE UPPER END OF EACH OF SAID PASSAGES FOR EXTENSION TO A REMOTE LOCATION, A SERVICE TUBING EXTENDING DOWNWARDLY FROM ONE OF SAID PASSAGES, A VALVE BODY IN THE WELL BENEATH THE WELLHEAD AND HAVING THREE CHAMBERS THEREIN, A FIRST OF SAID CHAMBERS CONNECTING WITH SAID SERVICE TUBING AND THE SECOND AND THIRD CHAMBERS COMMUNICATING WITH CONDUITS WITHIN THE WELL WHICH SEPARATELY COMMUNICATE WITH THE OTHER TWO PASSAGES THROUGH SAID WELLHEAD, MEANS INCLUDING A VALVE MEMBER MOVABLE BETWEEN POSITIONS WITHIN THE FIRST CHAMBER FOR CONNECTING THE SERVICE TUBING SELECTIVELY WITH ONE OR THE OTHER OF SAID CONDUITS AND SEALING SAID CONDUITS FROM ONE ANOTHER, AND PLUG MEANS PUMPABLE THROUGH SAID SERVICE TUBING AND LINE FOR MOVING THE VALVE MEMBER BETWEEN SAID POSITIONS.
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) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |