Patent US3303656A successfully refreshed from Google Patents.
US3303656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for constructing columns of material in soil
Assignee: Individual
•
Filing: 1962-12-21
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Granted: 1967-02-14
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Expires: 1982-12-21
Abstract
No abstract record available.
Inventors
- 👤 Richard E Landau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:20
CPC Classifications
E; E02; E02D; E02D3/00; E02D3/02; E02D3/10; E02D3/106
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A METHOD OF FORMING COLUMNS OF MATERIAL IN SOIL BY MEANS OF AN AUGER APPARATUS CONTAINING A SUPPLY OF COLUMN FORMING MATERIALS AND HAVING A HOLLOW SHAFT WITH A CUTTING FLIGHT OR FLIGHTS, AND HOLLOW SHAFT HAVING A CONVEYOR MEANS EXTENDING LONGITUDINALLY OF AND WITHIN SAID HOLLOW SHAFT, COMPRISING HELICAL CUTTING INTO SAID SOIL WITH SAID HOLLOW SHAFT AUGER, WITHDRAWING SAID AUGER FROM SAID SOIL SUCH THAT A CAVITY IS FORMED IN SAID SOIL, CONVEYING SAID CONTAINED MATERIAL INTO SAID CAVITY IN TIMED RELATIONSHIP WITH THE WITHDRAWAL OF SAID AUGER TO FORM SAID COLUMN OF MATERIAL.
Claim 2
Independent Claim
96 words
A METHOD OF FORMING COLUMNS OF MATERIAL IN SOIL BY MEANS OF AN AUGER APPARATUS CONTAINING A SUPPLY OF COLUMN FORMING MATERIALS AND HAVING A HOLLOW SHAFT WITH A CUTTING FLIGHT OR FLIGHTS, AND HOLLOW SHAFT HAVING A CONVEYOR MEANS EXTENDING LONGITUDINALLY OF AND WITHIN SAID HOLLOW SHAFT, COMPRISING HELICAL CUTTING INTO SAID SOIL WITH SAID HOLLOW SHAFT AUGER, WITHDRAWING SAID AUGER FROM SAID SOIL SUCH THAT A CAVITY IS FORMED IN SAID SOIL, CONVEYING SAID CONTAINED MATERIAL INTO SAID CAVITY IN TIMED RELATIONSHIP WITH THE WITHDRAWAL OF SAID AUGER TO FORM SAID COLUMN OF MATERIAL.
References Cited (Backward Citations)
CA582692A
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US1356125A
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US1817240A
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US2048710A
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US2822671A
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US3096622A
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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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |