US3106961A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parallel string packer
Assignee: Baker Hughes Oilfield Operations LLC
•
Filing: 1959-02-24
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Granted: 1963-10-15
•
Expires: 1979-02-24
Abstract
No abstract record available.
Inventors
- 👤 Herbert L Bigelow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:05
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/122
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN A WELL TOOL ADAPTED TO BE DISPOSED IN A WELL BORE: UPPER AND LOWER BODY MEMBERS SPACED LONGITUDINALLY FROM ONE ANOTHER, EACH MEMBER HAVING LONGITUDINAL PASSAGES ALIGNED WITH LONGITUDINAL PASSAGES IN THE OTHER MEMBER; TUBES SECURED TO ONE OF SAID MEMBERS IN COMMUNICIATION WITH THE PASSAGES IN SAID ONE MEMBER AND SLIDABLE IN THE PASSAGES IN SAID OTHER MEMBER; NORMALLY RETRACTED MEANS ON SAID TUBES DISPOSED BETWEEN AND ENGAGEABLE WITH SAID MEMBERS AND ADAPTED TO BE EXPANDED OUTWARDLY UPON RELATIVE MOVEMENT OF SAID BODY MEMBERS TOWARD EACH OTHER; AND ONE-WAY LOCK MEANS ACTING BETWEEN ONE OF SAID TUBES AND SAID OTHER MEMBER TO PREVENT SAID BODY MEMBERS FROM MOVING AWAY FROM EACH OTHER AFTER OUTWARD EXPANSION OF SAID NORMALLY RETRACTED MEANS.
Claim 2
Dependent Claim
122 words
IN A WELL TOOL ADAPTED TO BE DISPOSED IN A WELL BORE: UPPER AND LOWER BODY MEMBERS SPACED LONGITUDINALLY FROM ONE ANOTHER, EACH MEMBER HAVING LONGITUDINAL PASSAGES ALIGNED WITH LONGITUDINAL PASSAGES IN THE OTHER MEMBER; TUBES SECURED TO ONE OF SAID MEMBERS IN COMMUNICIATION WITH THE PASSAGES IN SAID ONE MEMBER AND SLIDABLE IN THE PASSAGES IN SAID OTHER MEMBER; NORMALLY RETRACTED MEANS ON SAID TUBES DISPOSED BETWEEN AND ENGAGEABLE WITH SAID MEMBERS AND ADAPTED TO BE EXPANDED OUTWARDLY UPON RELATIVE MOVEMENT OF SAID BODY MEMBERS TOWARD EACH OTHER; AND ONE-WAY LOCK MEANS ACTING BETWEEN ONE OF SAID TUBES AND SAID OTHER MEMBER TO PREVENT SAID BODY MEMBERS FROM MOVING AWAY FROM EACH OTHER AFTER OUTWARD EXPANSION OF SAID NORMALLY RETRACTED MEANS.
References Cited (Backward Citations)
US46925A
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US381013A
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US1318352A
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US1014272A
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US1431779A
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US2156429A
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US2687775A
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US2707998A
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US2902093A
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US2903066A
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US2791277A
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US2950761A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-14 | 1967-04-15 | 1967-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-14 | 1971-04-15 | 1971-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-14 | 1975-04-15 | 1975-10-15 | $7700.00 | Window Closed / Lapsed |