Patent US3190375A successfully refreshed from Google Patents.
US3190375A
Expired / Lapsed
US
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Dirt discharging means for auger-drill rig
Assignee: MELVIN W SALVAGE
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Filing: 1963-09-30
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Granted: 1965-06-22
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Expires: 1983-09-30
Abstract
No abstract record available.
Inventors
- 👤 Charles E Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:25
CPC Classifications
E; E02; E02F; E02F7/00; E02F7/06; E21; E21B; E21B7/00; E21B7/003; E21B7/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A DRILL RIG COMPRISING: (A) A LONGITUDINALLY MOVABLE AUGER FOR ROTATIONALLY BORING A HOLE IN THE GROUND, (B) A FIXED HOUSING CONCENTRIC WITHT THE AUGER AND HAVING A CENTRAL OPEING IN WHICH THE AUGER FREELY MOVES, SAID HOUSING HAVING A LATERAL DISCHARGE OPENING AND RECEPTIVE OF SOIL DISLODGED FROM THE AUGER WHEN RAISED OUT OF THE HOLE, AND (C) ROTATIONAL MEANS MOVABLE IN THE HOUSING TO MOVE THE SOIL THEREIN TO AND THROUGH THE DISCHARGE OPENING, SAID MEANS COMPRISING A ROTATIONAL PLATE CLOSING THE BOTTOM OF THE HOUSING, THE PLATE BEING ADAPTED TO ALLOW THE AUGER TO PASS THROUGH IT, AND A MULTIPLICITY OF UPRIGHT VANES AFFIXED TO THE ROTATIONAL PLATE.
Claim 2
Dependent Claim
111 words
A DRILL RIG COMPRISING: (A) A LONGITUDINALLY MOVABLE AUGER FOR ROTATIONALLY BORING A HOLE IN THE GROUND, (B) A FIXED HOUSING CONCENTRIC WITHT THE AUGER AND HAVING A CENTRAL OPEING IN WHICH THE AUGER FREELY MOVES, SAID HOUSING HAVING A LATERAL DISCHARGE OPENING AND RECEPTIVE OF SOIL DISLODGED FROM THE AUGER WHEN RAISED OUT OF THE HOLE, AND (C) ROTATIONAL MEANS MOVABLE IN THE HOUSING TO MOVE THE SOIL THEREIN TO AND THROUGH THE DISCHARGE OPENING, SAID MEANS COMPRISING A ROTATIONAL PLATE CLOSING THE BOTTOM OF THE HOUSING, THE PLATE BEING ADAPTED TO ALLOW THE AUGER TO PASS THROUGH IT, AND A MULTIPLICITY OF UPRIGHT VANES AFFIXED TO THE ROTATIONAL PLATE.
References Cited (Backward Citations)
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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) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |