Patent US3301599A successfully refreshed from Google Patents.
US3301599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of continuous open-pit mining and apparatus therefor
Assignee: Union Carbide Corp
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Filing: 1964-02-27
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Granted: 1967-01-31
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Expires: 1984-02-27
Abstract
No abstract record available.
Inventors
- 👤 John W Heimaster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:20
CPC Classifications
E; E21; E21C; E21C47/00; E21C47/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
METHOD FOR MINING A SELECTED GEOLOGICAL STRATA MATERIAL FROM WHICH THE OVERLYING STRATA HAVE BEEN REMOVED WHICH COMPRISES SUBSTANTIALLY CONTINUOUSLY GENERATING A GENERALLY DOWNWARDLY INCLINED COURSE FROM THE SURFACE OF SAID STRATA MATERIAL TO A DESIRED DEPTH AND THEREAFTER, SUBSTANTIALLY CONTINUOUSLY GENERATING A SUBSTANTIALLY HORIZONTAL COURSE AS AN EXTENSION OF SAID INCLINED COURSE THROUGH SAID STRATA MATERIAL, GENERATING A SECOND COURSE CONTIGUOUS TO AND SUBSTANTIALLY PARALLEL WITH THE FIRST COURSE AND REPEATING THE SEQUENCE UNTIL THE WIDTH OF THE EXPOSED STRATA MATERIAL HAS BEEN TRAVERSED, EACH COURSE HAVING A FLOOR, AT LEAST ONE SIDE, AN END AND NO CEILING, EACH COURSE BEING GENERATED BY SUBSTANTIALLY CONTINUOUSLY DISINTEGRATING AND DISLODGING THE STRATA MATERIAL FROM SAID END, AND SUBSTANTIALLY CONTINUOUSLY AND SIMULTANEOUSLY REMOVING THE DISLODGED STRATA MATERIAL FROM THE END OF SAID COURSE AND TRANSPORTING IT TO A SUBSTANTIALLY SEPARATE PLACE.
Claim 2
Dependent Claim
139 words
METHOD FOR MINING A SELECTED GEOLOGICAL STRATA MATERIAL FROM WHICH THE OVERLYING STRATA HAVE BEEN REMOVED WHICH COMPRISES SUBSTANTIALLY CONTINUOUSLY GENERATING A GENERALLY DOWNWARDLY INCLINED COURSE FROM THE SURFACE OF SAID STRATA MATERIAL TO A DESIRED DEPTH AND THEREAFTER, SUBSTANTIALLY CONTINUOUSLY GENERATING A SUBSTANTIALLY HORIZONTAL COURSE AS AN EXTENSION OF SAID INCLINED COURSE THROUGH SAID STRATA MATERIAL, GENERATING A SECOND COURSE CONTIGUOUS TO AND SUBSTANTIALLY PARALLEL WITH THE FIRST COURSE AND REPEATING THE SEQUENCE UNTIL THE WIDTH OF THE EXPOSED STRATA MATERIAL HAS BEEN TRAVERSED, EACH COURSE HAVING A FLOOR, AT LEAST ONE SIDE, AN END AND NO CEILING, EACH COURSE BEING GENERATED BY SUBSTANTIALLY CONTINUOUSLY DISINTEGRATING AND DISLODGING THE STRATA MATERIAL FROM SAID END, AND SUBSTANTIALLY CONTINUOUSLY AND SIMULTANEOUSLY REMOVING THE DISLODGED STRATA MATERIAL FROM THE END OF SAID COURSE AND TRANSPORTING IT TO A SUBSTANTIALLY SEPARATE PLACE.
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) | 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 |