US3145785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible drill collar stabilizer
Assignee: Jersey Production Research Co
•
Filing: 1960-02-15
•
Granted: 1964-08-25
•
Expires: 1980-02-15
Abstract
No abstract record available.
Inventors
- 👤 Jackson M Kellner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:01
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/04; E21B7/10; E21B17/00; E21B17/10; E21B17/1014; E21B17/1042; E21B7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A DRILL COLLAR STABILIZER COMPRISING A TUBULAR SUPPORTING STRUCTURE HAVING A TAPERED LOWER EDGE; A TUBULAR MANDREL HAVING ONE END SLIDABLY POSITIONED WITHIN SAID SUPPORTING STRUCTURE AND EXTENDING THEREFROM BELOW SAID TAPERED EDGE IN TELESCOPIC RELATIONSHIP TO SAID SUPPORTING STRUCTURE; MEANS FOR LIMITING AXIAL MOVEMENT OF SAID MANDREL WITH RESPECT TO SAID SUPPORTING STRUCTURE; AN ELASTIC SLEEVE HAVING CIRCUMFERENTIALLY-SPACED RIBS ON THE OUTER SURFACE THEREOF, SAID ELASTIC SLEEVE BEING ROTATABLY MOUNTED ON SAID MANDREL AND EXTENDING UPWARDLY OVER SAID TAPERED EDGE; MEANS FOR LIMITING AXIAL MOVEMENT OF SAID ELASTIC SLEEVE WITH RESPECT TO SAID MANDREL; AND MEANS FOR TRANSMITTING TORQUE BETWEEN SAID MANDREL AND SAID SUPPORTING STRUCTURE.
Claim 2
Dependent Claim
107 words
A DRILL COLLAR STABILIZER COMPRISING A TUBULAR SUPPORTING STRUCTURE HAVING A TAPERED LOWER EDGE; A TUBULAR MANDREL HAVING ONE END SLIDABLY POSITIONED WITHIN SAID SUPPORTING STRUCTURE AND EXTENDING THEREFROM BELOW SAID TAPERED EDGE IN TELESCOPIC RELATIONSHIP TO SAID SUPPORTING STRUCTURE; MEANS FOR LIMITING AXIAL MOVEMENT OF SAID MANDREL WITH RESPECT TO SAID SUPPORTING STRUCTURE; AN ELASTIC SLEEVE HAVING CIRCUMFERENTIALLY-SPACED RIBS ON THE OUTER SURFACE THEREOF, SAID ELASTIC SLEEVE BEING ROTATABLY MOUNTED ON SAID MANDREL AND EXTENDING UPWARDLY OVER SAID TAPERED EDGE; MEANS FOR LIMITING AXIAL MOVEMENT OF SAID ELASTIC SLEEVE WITH RESPECT TO SAID MANDREL; AND MEANS FOR TRANSMITTING TORQUE BETWEEN SAID MANDREL AND SAID SUPPORTING STRUCTURE.
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) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |