US3074484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drag block and slip assembly for well packer or the like
Assignee: Individual
•
Filing: 1960-05-23
•
Granted: 1963-01-22
•
Expires: 1980-05-23
Abstract
No abstract record available.
Inventors
- 👤 Martin B Conrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:31
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1291
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A WELL TOOL ADAPTED TO BE SET IN WELL CASING, COMPRISING AN ELONGATED MANDREL, A CARRIER DISPOSED ON SAID MANDREL FOR RELATIVE AXIAL MOVEMENT, SAID CARRIER HAVING A PLURALITY OF RADIAL SLOTS THEREIN EXTENDING LONGITUDINALLY OF SAID CARRIER AND OPEN AT ONE END, A CASING ENGAGING DRAG BLOCK SHIFTABLY DISPOSED IN EACH OF SAID SLOTS FOR MOVEMENT LATERALLY OF SAID CARRIER, MEANS BIASING SAID DRAG BLOCKS LATERALLY OUTWARD, COOPERATING MEANS ON THE CARRIER AND DRAG BLOCKS LIMITING RELATIVE AXIAL MOVEMENT THEREBETWEEN A SLIP ASSOCIATED WITH EACH DRAG BLOCK AND INCLUDING A HEAD HAVING CASING ENGAGING TEETH, AN INTEGRAL STEM ON SAID HEAD EXTENDING INTO THE OPEN END OF THE SLOT IN SAID CARRIER IN WHICH THE ASSOCIATED DRAG BLOCK IS DISPOSED, MEANS PIVOTALLY CONNECTING SAID STEM TO SAID DRAG BLOCK, AND AN EXPANDER ON SAID BODY ENGAGEABLE WITH SAID SLIPS UPON MOVEMENT OF SAID MANDREL IN ONE DIRECTION RELATIVE TO THE CARRIER TO MOVE SAID SLIPS INTO ENGAGEMENT WITH SAID WELL CASING.
Claim 2
Dependent Claim
162 words
A WELL TOOL ADAPTED TO BE SET IN WELL CASING, COMPRISING AN ELONGATED MANDREL, A CARRIER DISPOSED ON SAID MANDREL FOR RELATIVE AXIAL MOVEMENT, SAID CARRIER HAVING A PLURALITY OF RADIAL SLOTS THEREIN EXTENDING LONGITUDINALLY OF SAID CARRIER AND OPEN AT ONE END, A CASING ENGAGING DRAG BLOCK SHIFTABLY DISPOSED IN EACH OF SAID SLOTS FOR MOVEMENT LATERALLY OF SAID CARRIER, MEANS BIASING SAID DRAG BLOCKS LATERALLY OUTWARD, COOPERATING MEANS ON THE CARRIER AND DRAG BLOCKS LIMITING RELATIVE AXIAL MOVEMENT THEREBETWEEN A SLIP ASSOCIATED WITH EACH DRAG BLOCK AND INCLUDING A HEAD HAVING CASING ENGAGING TEETH, AN INTEGRAL STEM ON SAID HEAD EXTENDING INTO THE OPEN END OF THE SLOT IN SAID CARRIER IN WHICH THE ASSOCIATED DRAG BLOCK IS DISPOSED, MEANS PIVOTALLY CONNECTING SAID STEM TO SAID DRAG BLOCK, AND AN EXPANDER ON SAID BODY ENGAGEABLE WITH SAID SLIPS UPON MOVEMENT OF SAID MANDREL IN ONE DIRECTION RELATIVE TO THE CARRIER TO MOVE SAID SLIPS INTO ENGAGEMENT WITH SAID WELL CASING.
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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |