Patent US3303885A successfully refreshed from Google Patents.
US3303885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-retrievable bridge plug
Assignee: Schlumberger Technology Corp
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Filing: 1964-03-31
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Granted: 1967-02-14
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Expires: 1984-03-31
Abstract
No abstract record available.
Inventors
- 👤 Iii James W Kisling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:40
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1293
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN A WELL TOOL HAVING BODY MEANS, EXPANDER MEANS ON SAID BODY MEANS MOVABLE RELATIVE THERETO RESPONSIVE TO LONGITUDINALLY DIRECTED SETTING FORCES, SLIP MEANS ON SAID EXPANDER MEANS MOVABLE RELATIVE THERETO RESPONSIVE TO SAID SETTING FORCES, AND ELASTOMERIC PACKING MEANS MOVABLY MOUNTED ON BODY MEANS AND ENGAGEABLE WITH SAID EXPANDER MEANS, THE COMBINATION OF STOP MEANS ON SAID BODY MEANS ENGAGEABLE WITH SAID EXPANDER MEANS AND SAID PACKING MEANS, MEANS COUPLING SAID STOP MEANS TO SAID BODY MEANS TO PREVENT MOVEMENT IN ONE DIRECTION AND PERMIT MOVEMENT IN AN OPPOSITE DIRECTION, AND MEANS FOR RESTRAINING MOVEMENT OF SAID STOP MEANS IN SAID OPPOSITE DIRECTION UNTIL A FORCE OF PREDETERMINED MAGNITUDE IS APPLIED HERETO.
Claim 2
Dependent Claim
113 words
IN A WELL TOOL HAVING BODY MEANS, EXPANDER MEANS ON SAID BODY MEANS MOVABLE RELATIVE THERETO RESPONSIVE TO LONGITUDINALLY DIRECTED SETTING FORCES, SLIP MEANS ON SAID EXPANDER MEANS MOVABLE RELATIVE THERETO RESPONSIVE TO SAID SETTING FORCES, AND ELASTOMERIC PACKING MEANS MOVABLY MOUNTED ON BODY MEANS AND ENGAGEABLE WITH SAID EXPANDER MEANS, THE COMBINATION OF STOP MEANS ON SAID BODY MEANS ENGAGEABLE WITH SAID EXPANDER MEANS AND SAID PACKING MEANS, MEANS COUPLING SAID STOP MEANS TO SAID BODY MEANS TO PREVENT MOVEMENT IN ONE DIRECTION AND PERMIT MOVEMENT IN AN OPPOSITE DIRECTION, AND MEANS FOR RESTRAINING MOVEMENT OF SAID STOP MEANS IN SAID OPPOSITE DIRECTION UNTIL A FORCE OF PREDETERMINED MAGNITUDE IS APPLIED HERETO.
References Cited (Backward Citations)
US1188489A
Cited
US2623593A
Cited
US2807325A
Cited
US3082824A
Cited
US3091293A
Cited
US3163225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |