Patent US3203493A successfully refreshed from Google Patents.
US3203493A
Expired / Lapsed
US
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Deep-hole drill
Assignee: Stora Enso Oyj
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Filing: 1963-05-03
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Granted: 1965-08-31
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Expires: 1983-05-03
Abstract
No abstract record available.
Inventors
- 👤 Bergstrom Ernst Reidar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:29
CPC Classifications
B; B23; B23D; B23D77/00; B23D77/02; B23D77/04; B23B; B23B51/00; B23B51/0006; B23B51/0007; B23B51/0008; B23B51/04; B23B51/0486; B23B51/06; B23B51/063; B23D77/048; B23B2251/00; B23B2251/20; B23B2251/201; B23B2251/56; B23D2277/00; B23D2277/20; B23D2277/201; Y; Y10; Y10T; Y10T407/00; Y10T407/22; Y10T407/2222; Y10T407/2244; Y10T407/2246; Y10T408/00; Y10T408/83; Y10T408/85; Y10T408/858; Y10T408/8595; Y10T83/00; Y10T83/929; Y10T83/9457; Y10T83/9464; Y10T83/9469
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A DEEP-HOLE DRILL COMPRISING A DRILL ROD HAVING A LONGITUDINAL LATERALLY EXTENDING BASE, A ROTATABLY ADJUSTABLE BLADE HAVING A PERIPHERAL CUTTING EDGE AND RESTING ON SAID BASE, A HOLDING MEMBER RESTING ON THE BASE IN REAR OF THE BLADE AND HAVING A FRONT SEAT FOR THE BLADE CONFORMING TO THE SAID EDGE OF THE BLADE, SAID HOLDING MEMBER HAVING A FORWARD PORTION PROJECTING OVER PART OF THE BLADE, AND MEANS FOR CLAMPING THE HOLDING MEMBER TO SAID DRILL ROD.
Claim 2
Dependent Claim
79 words
A DEEP-HOLE DRILL COMPRISING A DRILL ROD HAVING A LONGITUDINAL LATERALLY EXTENDING BASE, A ROTATABLY ADJUSTABLE BLADE HAVING A PERIPHERAL CUTTING EDGE AND RESTING ON SAID BASE, A HOLDING MEMBER RESTING ON THE BASE IN REAR OF THE BLADE AND HAVING A FRONT SEAT FOR THE BLADE CONFORMING TO THE SAID EDGE OF THE BLADE, SAID HOLDING MEMBER HAVING A FORWARD PORTION PROJECTING OVER PART OF THE BLADE, AND MEANS FOR CLAMPING THE HOLDING MEMBER TO SAID DRILL ROD.
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) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |