Patent US3356338A successfully refreshed from Google Patents.
US3356338A
Expired / Lapsed
US
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Turbodrill
Assignee: INST BUROVOI TEKHNIK
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Filing: 1965-06-15
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Granted: 1967-12-05
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Expires: 1985-06-15
Abstract
No abstract record available.
Inventors
- 👤 Ioanesyan Jury Rolenovich
- 👤 Ioannesyan Rolen Arsenievich
- 👤 Ovchinnikov Alexan Nikolaevich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:58
CPC Classifications
E; E21; E21B; E21B4/00; E21B4/02; Y; Y10; Y10S; Y10S415/00; Y10S415/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A TURBODRILL INCLUDING: A MULTISTAGE TURBINE; A MULTISTAGE BYPASS VALVE WHICH SERVES TO ADJUST THE FLOW OF THE DRILLING FLUID THROUGH SAID TURBINE DEPENDING ON THE SPEED OF ITS SHAFT; THE BLADES OF SAID TURBINE BEING OF SUCH A SHAPE THAT THE ANGLE OF DISCHARGE OF THE DRILLING FLUID FROM THE STATOR OF SAID TURBINE EQUALS OR APPROACHES THE ANGLE OF INELT OF THE DRILLING TO THE ROTOR AT REST, WHEREAS THE ANGLE OF DISCHARGE OF THE FLUID FROM SAID ROTOR IN MOTION EQUALS OR APPROACHES THE ANGLE OF THE FLUID INLET TO THE STATOR OF SAID TURBINE.
Claim 2
Dependent Claim
98 words
A TURBODRILL INCLUDING: A MULTISTAGE TURBINE; A MULTISTAGE BYPASS VALVE WHICH SERVES TO ADJUST THE FLOW OF THE DRILLING FLUID THROUGH SAID TURBINE DEPENDING ON THE SPEED OF ITS SHAFT; THE BLADES OF SAID TURBINE BEING OF SUCH A SHAPE THAT THE ANGLE OF DISCHARGE OF THE DRILLING FLUID FROM THE STATOR OF SAID TURBINE EQUALS OR APPROACHES THE ANGLE OF INELT OF THE DRILLING TO THE ROTOR AT REST, WHEREAS THE ANGLE OF DISCHARGE OF THE FLUID FROM SAID ROTOR IN MOTION EQUALS OR APPROACHES THE ANGLE OF THE FLUID INLET TO THE STATOR OF SAID TURBINE.
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) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |