Patent US2743780A successfully refreshed from Google Patents.
US2743780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well packers
Assignee: Individual
•
Filing: 1950-02-20
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Granted: 1956-05-01
•
Expires: 1970-02-20
Abstract
No abstract record available.
Inventors
- 👤 Cicero C Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:06
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1295; E21B33/12955
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A WELL PACKER INCLUDING, A TUBULAR SUPPORT ADAPTED TO BE LOWERED WITHIN A WELL CASING, AN ANCHORING ASSEMBLY SLIDABLY MOUNTED ON SAID SUPPORT AND INCLUDING A SLIP CARRYING SLEEVE, CASING GRIPPING SLIPS LATERALLY SLIDABLE IN SAID SLEEVE, AND A SLIP EXPANDED SLIDABLE ON SAID SUPPORT AND RELATIVE TO SAID SLEEVE TO EXPAND SAID SLIPS, CONNECTING MEANS RELEASABLY CONNECTING SAID SUPPORT TO SAID SLEEVE FOR HOLDING SAID SLEEVE AGAINST LONGITUDINAL MOVEMENT ON SAID SUPPORT, MEANS ON SAID SLEEVE FOR HOLDING IT STATIONARY IN SAID CASING, MEANS FOR HOLDING SAID EXPANDER AGAINST MOVEMENT TOWARD SAID SLIPS DURING THE LOWERING OF THE PACKER INTO THE WELL CASING WHEREBY SAID ANCHORING SLIPS ARE PREVENTED FROM MOVING INTO GRIPPING POSITION WITH THE WELL CASING WHILE SAID SUPPORT AND ANCHORING ASSEMBLY ARE CONNECTED, RELEASE OF SAID CONNECTING MEANS PERMITTING A LONGITUDINAL MOVEMENT OF SAID SUPPORT RELATIVE TO SAID SLEEVE AND ALSO PERMITTING RELATIVE MOVEMENT
Claim 2
Dependent Claim
148 words
A WELL PACKER INCLUDING, A TUBULAR SUPPORT ADAPTED TO BE LOWERED WITHIN A WELL CASING, AN ANCHORING ASSEMBLY SLIDABLY MOUNTED ON SAID SUPPORT AND INCLUDING A SLIP CARRYING SLEEVE, CASING GRIPPING SLIPS LATERALLY SLIDABLE IN SAID SLEEVE, AND A SLIP EXPANDED SLIDABLE ON SAID SUPPORT AND RELATIVE TO SAID SLEEVE TO EXPAND SAID SLIPS, CONNECTING MEANS RELEASABLY CONNECTING SAID SUPPORT TO SAID SLEEVE FOR HOLDING SAID SLEEVE AGAINST LONGITUDINAL MOVEMENT ON SAID SUPPORT, MEANS ON SAID SLEEVE FOR HOLDING IT STATIONARY IN SAID CASING, MEANS FOR HOLDING SAID EXPANDER AGAINST MOVEMENT TOWARD SAID SLIPS DURING THE LOWERING OF THE PACKER INTO THE WELL CASING WHEREBY SAID ANCHORING SLIPS ARE PREVENTED FROM MOVING INTO GRIPPING POSITION WITH THE WELL CASING WHILE SAID SUPPORT AND ANCHORING ASSEMBLY ARE CONNECTED, RELEASE OF SAID CONNECTING MEANS PERMITTING A LONGITUDINAL MOVEMENT OF SAID SUPPORT RELATIVE TO SAID SLEEVE AND ALSO PERMITTING RELATIVE MOVEMENT
References Cited (Backward Citations)
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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) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |