US3198263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power means for rotary drill apparatus
Assignee: Caterpillar Global Mining LLC
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Filing: 1963-04-29
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Granted: 1965-08-03
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Expires: 1983-04-29
Abstract
No abstract record available.
Inventors
- 👤 Karl E Reischl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:16
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/02; E21B15/00; E21B15/04; E21B19/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
145 words
IN A ROTARY DRILLING APPARATUS HAVING A MAIN SUPPORTING FRAME AND A DRILL MAST PIVOTALLY SUPPORTED BY SAID FRAME, THE COMBINATION COMPRISING: MEANS FOR TILTING SAID MAST ABOUT ITS PIVOT; A TRACK EXTENDING LONGITUDINALLY ALONG SAID MAST; DRILL STRING ROTATING MEANS MOUNTED ON SAID MAST HAVING ROTATABLE TRACK TO RAISE MEANS MOVABLE LONGITUDINALLY ALONG SAID TRACK TO RAISE AND LOWER SAID DRILL STRING ROTATING MEANS FOR DRILLING OPERATIONS; A DRIVEN SHAFT ALIGNED WITH THE PIVOT OF SAID MAST; DRIVING MEANS TO DRIVE SAID SHAFT; WHEEL MEANS CARRIED BY SAID MAST WHICH ARE LOCATED BOTH ABOVE AHD BELOW SAID DRILL STRING ROTATING MEANS; AND FLEXIBLE DRIVE MEANS INCLUDING A CLOSED LOOP EXTENDING FROM SAID DRILL STRING ROTATING MEANS UPWARD TO AND AROUND THE WHEEL MEANS ABOVE THE DRILL STRING ROTATING MEANS, THEN TO AND AROUND SAID SHAFT, THEN TO AND AROUND THE WHEEL MEANS BELOW SAID
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |