Patent US2404845A successfully refreshed from Google Patents.
Patent US3316985A successfully refreshed from Google Patents.
US3316985A
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Under-reaming machine
Assignee: Hydro Jet Services Inc
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Filing: 1963-12-18
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Granted: 1967-05-02
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Expires: 1983-12-18
Abstract
No abstract record available.
Inventors
- 👤 Fly Anderson Billy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:02
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/18; E21B10/00; E21B10/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A DEVICE FOR UNDER-REAMING A WELL AND DIGGING AN UNDERGROUND TUNNEL COMPRISING A VERTICALLY MOVABLE SUPPORT AT THE SURFACE, ROTATABLY SUPPORTED THEREFROM UNDERGROUND A SUBSTANTIALLY RIGID HOUSING CONTAINING A PLURALITY OF OUTWARDLY DIRECTED CUTTING JETS, A VALVE IN SAID HOUSING, A FLUID SUPPLY LINE IN SAID HOUSING OPERATIVELY CONNECTED TO SAID JETS THROUGH SAID VALVE, AN UNDERGROUND PUMP FOR DIRECTING FLUID UPWARD THROUGH SAID HOUSING, SAID PUMP HAVING AN OUTLET, SAID OUTLET BEING LOCATED IN SAID HOUSING AND BELOW SAID JETS, AND SAID PUMP OPERATIVELY CONNECTED TO SAID INLET LINE, AND A CONTROL MEANS FOR SAID PUMP AND SAID CUTTING JETS BEING LOCATED AT THE SURFACE.
Claim 2
Independent Claim
106 words
A DEVICE FOR UNDER-REAMING A WELL AND DIGGING AN UNDERGROUND TUNNEL COMPRISING A VERTICALLY MOVABLE SUPPORT AT THE SURFACE, ROTATABLY SUPPORTED THEREFROM UNDERGROUND A SUBSTANTIALLY RIGID HOUSING CONTAINING A PLURALITY OF OUTWARDLY DIRECTED CUTTING JETS, A VALVE IN SAID HOUSING, A FLUID SUPPLY LINE IN SAID HOUSING OPERATIVELY CONNECTED TO SAID JETS THROUGH SAID VALVE, AN UNDERGROUND PUMP FOR DIRECTING FLUID UPWARD THROUGH SAID HOUSING, SAID PUMP HAVING AN OUTLET, SAID OUTLET BEING LOCATED IN SAID HOUSING AND BELOW SAID JETS, AND SAID PUMP OPERATIVELY CONNECTED TO SAID INLET LINE, AND A CONTROL MEANS FOR SAID PUMP AND SAID CUTTING JETS BEING LOCATED AT THE SURFACE.
References Cited (Backward Citations)
US2127265A
Cited
US2412765A
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US2376974A
Cited
GB631094A
Cited
US2678203A
Cited
US2720381A
Cited
US2745647A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |