US3301338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow auger coupling
Assignee: Mobile Drilling Co Inc
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Filing: 1963-12-30
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Granted: 1967-01-31
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Expires: 1983-12-30
Abstract
No abstract record available.
Inventors
- 👤 Robert E Dickinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:14
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/042; E21B17/043; E21B17/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A HOLLOW AUGER COMPRISING A PAIR OF STEMS EACH HAVING A FLIGHT ON THE EXTERNAL PERIPHERY THEREOF, ONE OF SAID STEMS HAVING AN EXTERNAL THREAD AT ONE END, THE OTHER OF SAID STEMS HAVING A COMPLEMENTARY INTERNAL THREAD AT ONE END, SAID STEMS BEING CONNECTED TOGETHER BY SAID EXTERNAL AND INTERNAL THREADS WITH SAID FLIGHTS IN ALIGNMENT WITH EACH OTHER, RADIALLY EXTENDS PROJECTIONS ON THE EXTERNAL SURFACES OF SAID STEMS, SAID PROJECTIONS HAVING ALIGNED OPENINGS THERETHROUGH, AND A PIN RECEIVED THROUGH SAID OPENINGS AND BLOCKING ROTATION OF ONE OF SAID STEMS RELATIVE TO THE OTHER, SAID PIN PROJECTING EXTERNALLY OF SAID AUGER FROM THE OPPOSITE ENDS OF SAID OPENINGS WHEREBY SAID PIN CAN BE DRIVEN INTO SAID OPENINGS OR OUT OF SAID OPENINGS.
Claim 2
Dependent Claim
123 words
A HOLLOW AUGER COMPRISING A PAIR OF STEMS EACH HAVING A FLIGHT ON THE EXTERNAL PERIPHERY THEREOF, ONE OF SAID STEMS HAVING AN EXTERNAL THREAD AT ONE END, THE OTHER OF SAID STEMS HAVING A COMPLEMENTARY INTERNAL THREAD AT ONE END, SAID STEMS BEING CONNECTED TOGETHER BY SAID EXTERNAL AND INTERNAL THREADS WITH SAID FLIGHTS IN ALIGNMENT WITH EACH OTHER, RADIALLY EXTENDS PROJECTIONS ON THE EXTERNAL SURFACES OF SAID STEMS, SAID PROJECTIONS HAVING ALIGNED OPENINGS THERETHROUGH, AND A PIN RECEIVED THROUGH SAID OPENINGS AND BLOCKING ROTATION OF ONE OF SAID STEMS RELATIVE TO THE OTHER, SAID PIN PROJECTING EXTERNALLY OF SAID AUGER FROM THE OPPOSITE ENDS OF SAID OPENINGS WHEREBY SAID PIN CAN BE DRIVEN INTO SAID OPENINGS OR OUT OF SAID OPENINGS.
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |