US3131776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for rotary drilling
Assignee: Atlas Copco AB
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Filing: 1959-11-23
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Granted: 1964-05-05
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Expires: 1979-11-23
Abstract
No abstract record available.
Inventors
- 👤 Kvello-Aune Alf Gunnar
- 👤 Troften Per Fredrik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:18
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/08; E21B19/086
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A MACHINE FOR ROTATING A DRILL PIPE HAVING A BIT ON THE END THEREOF FOR ROTARY DRILLING, COMPRISING A FRAME ADAPTED TO BE FIXED TO THE GROUND, A HOUSING SUPPORTED BY SAID FRAME AT A POINT SPACED FROM THE GROUND, TWO HOLLOW EXTENSIBLE AND RETRACTABLE MEANS WHICH ARE AXIALLY ALINGED, ONE EXTENDING IN ONE DIRECTION FROM SAID HOUSING AND THE OTHER EXTENDING IN THE OTHER DIRECTION FROM SAID HOUSING, TWO CHUCK DEVICES, ONE ON THE END OF EACH OF THE EXTENSIBLE AND RETRACTABLE MEANS, EACH CHUCK DEVICE HAVING CLAMPING MEANS FOR CLAMPING AND RELEASING THE DRILL PIPE, ACTUATING MEANS CONNECTED TO SAID CHUCK DEVICES FOR ACTUATING SAID CLAMPING MEANS FOR RELEASING AND CLAMPING THE DRILL PIPE, AND ROTATING MEANS CONNECTED TO SAID CHUCK DEVICES FOR ROTATING SAID CLAMPING MEANS AROUND THE AXIS OF ALIGNMENT OF SAID EXTENSIBLE AND RETRACTABLE MEANS.
Claim 2
Dependent Claim
140 words
A MACHINE FOR ROTATING A DRILL PIPE HAVING A BIT ON THE END THEREOF FOR ROTARY DRILLING, COMPRISING A FRAME ADAPTED TO BE FIXED TO THE GROUND, A HOUSING SUPPORTED BY SAID FRAME AT A POINT SPACED FROM THE GROUND, TWO HOLLOW EXTENSIBLE AND RETRACTABLE MEANS WHICH ARE AXIALLY ALINGED, ONE EXTENDING IN ONE DIRECTION FROM SAID HOUSING AND THE OTHER EXTENDING IN THE OTHER DIRECTION FROM SAID HOUSING, TWO CHUCK DEVICES, ONE ON THE END OF EACH OF THE EXTENSIBLE AND RETRACTABLE MEANS, EACH CHUCK DEVICE HAVING CLAMPING MEANS FOR CLAMPING AND RELEASING THE DRILL PIPE, ACTUATING MEANS CONNECTED TO SAID CHUCK DEVICES FOR ACTUATING SAID CLAMPING MEANS FOR RELEASING AND CLAMPING THE DRILL PIPE, AND ROTATING MEANS CONNECTED TO SAID CHUCK DEVICES FOR ROTATING SAID CLAMPING MEANS AROUND THE AXIS OF ALIGNMENT OF SAID EXTENSIBLE AND RETRACTABLE MEANS.
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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |