US3300988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming piles
Assignee: Raymond International Inc
•
Filing: 1965-03-08
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Granted: 1967-01-31
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Expires: 1985-03-08
Abstract
No abstract record available.
Inventors
- 👤 Lindsey J Phares
- 👤 Harold M Mccall
- 👤 Richard K Snow
- 👤 Ernst W Spannhake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:55
CPC Classifications
E; E02; E02D; E02D13/00; E02D13/06; E02D5/00; E02D5/22; E02D5/34; E02D5/36; E02D7/00; E02D7/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
APPARATUS FOR FORMING PILES IN THE EARTH INCLUDING: AN AUGER TYPE DRILL ADAPTED TO DRILL A HOLE IN THE EARTH BY SINKING SAME TO A DESIRED DEPTH BY TURNING, SAID DRILL HAVING A HOLLOW TUBULAR STEM AND SPIRAL FLIGHTS; DRILL HOIST MEANS FOR WITHDRAWING THE DRILL FROM SUCH A HOLE IN THE EARTH THEREBY FORMING BENEATH THE DRILL A CAVITY ADAPTED TO RECEIVE A PILE-FORMING SUBSTANCE, THE CAVITY BEING OF A VOLUME WHICH PROGRESSIVELY INCREASES AS THE DRILL IS WITHDRAWN; MEANS FOR FILLING THE CAVITY COMPLETELY DURING SUCH DRILL WITHDRAWAL INCLUDING A PUMP FOR FORCING THEREIN VIA THE HOLLOW STEM OF THE DRILL SUCH PILE-FORMING SUBSTANCE; PRESSURE SENSING MEANS BEING DISPOSED ADJACENT THE LOWER END OF THE DRILL; MEANS FOR CONTROLLING SAID HOIST
Claim 2
Dependent Claim
123 words
APPARATUS FOR FORMING PILES IN THE EARTH INCLUDING: AN AUGER TYPE DRILL ADAPTED TO DRILL A HOLE IN THE EARTH BY SINKING SAME TO A DESIRED DEPTH BY TURNING, SAID DRILL HAVING A HOLLOW TUBULAR STEM AND SPIRAL FLIGHTS; DRILL HOIST MEANS FOR WITHDRAWING THE DRILL FROM SUCH A HOLE IN THE EARTH THEREBY FORMING BENEATH THE DRILL A CAVITY ADAPTED TO RECEIVE A PILE-FORMING SUBSTANCE, THE CAVITY BEING OF A VOLUME WHICH PROGRESSIVELY INCREASES AS THE DRILL IS WITHDRAWN; MEANS FOR FILLING THE CAVITY COMPLETELY DURING SUCH DRILL WITHDRAWAL INCLUDING A PUMP FOR FORCING THEREIN VIA THE HOLLOW STEM OF THE DRILL SUCH PILE-FORMING SUBSTANCE; PRESSURE SENSING MEANS BEING DISPOSED ADJACENT THE LOWER END OF THE DRILL; MEANS FOR CONTROLLING SAID HOIST
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |