US3092181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick release rotary drive for well pipe
Assignee: Individual
•
Filing: 1959-08-10
•
Granted: 1963-06-04
•
Expires: 1979-08-10
Abstract
No abstract record available.
Inventors
- 👤 Ford I Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:21
CPC Classifications
E; E21; E21B; E21B31/00; E21B31/005; E21B3/00; E21B3/02; E21B3/04; E21B47/00; E21B47/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
THE METHOD OF RAPIDLY ACCELERATING A PIPE STRING STUCK IN A WELL, THAT INCLUDES APPLYING TORQUE AT THE WELL HEAD FOR ROTATING THE STRING TO TWIST THE STRING AND PLACE THE STRING IN TORSION WITHIN THE WELL, APPLYING STRING WEIGHT AT THE WELL HEAD TO RESIST SAID TORQUE APPLICATION, AND ALLOWING THE PIPE AT THE WELL HEAD TO COUNTER-ROTATE FREELY SUBSTANTIALLY FASTER THAN THE STRING WAS ROTATED, WHEREBY THE PIPE STRING RAPIDLY UNTWISTS AT DIFFERENT DEPTHS IN THE WELL.
Claim 2
Independent Claim
79 words
THE METHOD OF RAPIDLY ACCELERATING A PIPE STRING STUCK IN A WELL, THAT INCLUDES APPLYING TORQUE AT THE WELL HEAD FOR ROTATING THE STRING TO TWIST THE STRING AND PLACE THE STRING IN TORSION WITHIN THE WELL, APPLYING STRING WEIGHT AT THE WELL HEAD TO RESIST SAID TORQUE APPLICATION, AND ALLOWING THE PIPE AT THE WELL HEAD TO COUNTER-ROTATE FREELY SUBSTANTIALLY FASTER THAN THE STRING WAS ROTATED, WHEREBY THE PIPE STRING RAPIDLY UNTWISTS AT DIFFERENT DEPTHS IN THE WELL.
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) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |