US3303656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for constructing columns of material in soil
Assignee: Individual
•
Filing: 1962-12-21
•
Granted: 1967-02-14
•
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 00:06
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.
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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 |