US3371727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the rotation and feeding of a drilling stem for rotary and percussive-rotary drilling rigs
Assignee: NAUCHNO-ISSLEDOVATELSKY I PROEKTNO-KONSTRUKTORSKY INSTITUTE PO DOBYCHE POLEZNYKH ISKOPAEMYKH OTKRYTYM SPOSOBOM
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Filing: 1964-10-14
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Granted: 1968-03-05
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Expires: 1984-10-14
Abstract
No abstract record available.
Inventors
- 👤 Belousov Vasily Fedorovich
- 👤 Zhilin Stanislav Nickolaevich
- 👤 Butkin Vladimir Dmitrievich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:55
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/08; E21B19/086; E21B19/084; E21B7/00; E21B7/02; E21B7/021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A DEVICE FOR THE ROTATION AND FEEDING OF A DRILLING STEM FOR ROTARY AND PERCUSSIVE-ROTARY DRILLING RIGS, COMPRISING: A STATIONARY MAST INCLUDING GUIDES; A MOVABLE MAST HAVING AN UPPER AND A PULLEY THEREON FOR SUPPORTING A TENSION MEMBER FOR PULLING UP A DRILLING STEM, SAID MOVABLE MAST BEING MOUNTED IN SAID GUIDES FOR LONGITUDINAL RECIPROCATION MOVEMENT; A ROTARY TABLE DISPOSED IN THE LOWER PART OF SAID STATIONARY MAST; ACTUATING CYLINDERS COUPLED TO SAID MOVABLE MAST TO MOVE THE SAME; A SWIVEL ADAPTED FOR BEING MOUNTED
Claim 2
Independent Claim
85 words
A DEVICE FOR THE ROTATION AND FEEDING OF A DRILLING STEM FOR ROTARY AND PERCUSSIVE-ROTARY DRILLING RIGS, COMPRISING: A STATIONARY MAST INCLUDING GUIDES; A MOVABLE MAST HAVING AN UPPER AND A PULLEY THEREON FOR SUPPORTING A TENSION MEMBER FOR PULLING UP A DRILLING STEM, SAID MOVABLE MAST BEING MOUNTED IN SAID GUIDES FOR LONGITUDINAL RECIPROCATION MOVEMENT; A ROTARY TABLE DISPOSED IN THE LOWER PART OF SAID STATIONARY MAST; ACTUATING CYLINDERS COUPLED TO SAID MOVABLE MAST TO MOVE THE SAME; A SWIVEL ADAPTED FOR BEING MOUNTED
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) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |