US3378077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sleeved well packer assembly
Assignee: Otis Engineering Corp
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Filing: 1966-03-11
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Granted: 1968-04-16
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Expires: 1986-03-11
Abstract
No abstract record available.
Inventors
- 👤 Thomas L Elliston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:50
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A WELL PACKER INCLUDING: A TUBULAR MAIN SLEEVE; OUTWARDLY EXPANDABLE ANCHORING MEANS CARRIED BY SAID MAIN SLEEVE AND HAVING PROJECTING STOP AND LOCK SHOULDERS THEREON ENGAGEABLE WITH COMPLEMENTARY INTERNAL RECESSES OF A FLOW CONDUCTOR RECEIVING SAID PROJECTING SHOULDERS FOR HOLDING THE ANCHORING MEANS AGAINST MOVEMENT IN THE FLOW CONDUCTOR; MEANS LIMITING LONGITUDINAL MOVEMENT OF SAID MAIN SLEEVE RELATIVE TO SAID ANCHORING MEANS; PACKING MEANS CARRIED BY SAID MAIN SLEEVE AND EXPANDABLE TO SEAL BETWEEN THE MAIN SLEEVE AND A FLOW CONDUCTOR UPON LONGITUDINAL MOVEMENT OF SAID MAIN SLEEVE RELATIVE TO SAID ANCHORING MEANS; AN INNER MANDREL CONNECTABLE TO AN INNER FLOW CONDUCTOR TO CONSTITUTE A SECTION THEREOF AND MOVABLE THROUGH SAID MAIN SLEEVE; A SEAL ASSEMBLY FOR SEALING BETWEEN SAID MAIN SLEEVE AND SAID INNER MANDREL; FIRST MEANS FOR RELEASABLY AND RECONNECTABLY CONNECTING SAID SEAL ASSEMBLY TO SAID MAIN SLEEVE; AND SECOND MEANS FOR RELEASABLY CONNECTING SAID INNER MANDREL TO SAID SEAL ASSEMBLY.
Claim 2
Dependent Claim
153 words
A WELL PACKER INCLUDING: A TUBULAR MAIN SLEEVE; OUTWARDLY EXPANDABLE ANCHORING MEANS CARRIED BY SAID MAIN SLEEVE AND HAVING PROJECTING STOP AND LOCK SHOULDERS THEREON ENGAGEABLE WITH COMPLEMENTARY INTERNAL RECESSES OF A FLOW CONDUCTOR RECEIVING SAID PROJECTING SHOULDERS FOR HOLDING THE ANCHORING MEANS AGAINST MOVEMENT IN THE FLOW CONDUCTOR; MEANS LIMITING LONGITUDINAL MOVEMENT OF SAID MAIN SLEEVE RELATIVE TO SAID ANCHORING MEANS; PACKING MEANS CARRIED BY SAID MAIN SLEEVE AND EXPANDABLE TO SEAL BETWEEN THE MAIN SLEEVE AND A FLOW CONDUCTOR UPON LONGITUDINAL MOVEMENT OF SAID MAIN SLEEVE RELATIVE TO SAID ANCHORING MEANS; AN INNER MANDREL CONNECTABLE TO AN INNER FLOW CONDUCTOR TO CONSTITUTE A SECTION THEREOF AND MOVABLE THROUGH SAID MAIN SLEEVE; A SEAL ASSEMBLY FOR SEALING BETWEEN SAID MAIN SLEEVE AND SAID INNER MANDREL; FIRST MEANS FOR RELEASABLY AND RECONNECTABLY CONNECTING SAID SEAL ASSEMBLY TO SAID MAIN SLEEVE; AND SECOND MEANS FOR RELEASABLY CONNECTING SAID INNER MANDREL TO SAID SEAL ASSEMBLY.
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) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |