US3153290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for subaqueous excavations
Assignee: ASIA DREDGING CO Ltd
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Filing: 1962-01-30
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Granted: 1964-10-20
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Expires: 1982-01-30
Abstract
No abstract record available.
Inventors
- 👤 Saito Hirotsugu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:00
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/88; E02F3/90; E02F3/92; E02F3/9206; E02F3/905; E02F3/9243; E02F3/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
IN AN APPARATUS FOR REMOVING MATERIAL FROM A STRATUM AT A DISTANCE BELOW THE BED OF A BODY OF WATER, A BUOYANT OPERATING STATION, A DREDGING DEVICE ASSOCIATED WITH SAID OPERATING STATION, MEANS FOR RAISING AND LOWERING SAID DREDGING DEVICE, SAID DREDGING DEVICE COMPRISING A SUBSTANTIALLY BELL-SHAPED HOUSING HAVING AN OPEN BOTTOM, A JET LIFTER HAVING A NOZZLE AND LOCATED IN SAID HOUSING ABOVE SAID OPEN BOTTOM, A DOWNWARDLY DIRECTED JETING NOZZLE BELOW SAID OPEN BOTTOM AND CONNECTED TO SAID HOUSING, ANNULARLY ARRANGED DOWNWARDLY DIRECTED CUTTING NOZZLES MOUNTED ON SAID HOUSING ABOVE AND SPACED FROM SAID JETTING NOZZLE, SUBSTANTIALLY HORIZONTALLY OUTWARDLY DIRECTED SLICING NOZZLES MOUNTED ON SAID HOUSING, ABOVE SAID CUTTING NOZZLES, MEANS ON SAID BUOYANT STATION FOR APPLYING OPERATING FLUIDS TO THE NOZZLE OF SAID JET LIFTER, SAID JETTING NOZZLES, SAID CUTTING NOZZLES AND SAID SLICING NOZZLES.
Claim 2
Dependent Claim
138 words
IN AN APPARATUS FOR REMOVING MATERIAL FROM A STRATUM AT A DISTANCE BELOW THE BED OF A BODY OF WATER, A BUOYANT OPERATING STATION, A DREDGING DEVICE ASSOCIATED WITH SAID OPERATING STATION, MEANS FOR RAISING AND LOWERING SAID DREDGING DEVICE, SAID DREDGING DEVICE COMPRISING A SUBSTANTIALLY BELL-SHAPED HOUSING HAVING AN OPEN BOTTOM, A JET LIFTER HAVING A NOZZLE AND LOCATED IN SAID HOUSING ABOVE SAID OPEN BOTTOM, A DOWNWARDLY DIRECTED JETING NOZZLE BELOW SAID OPEN BOTTOM AND CONNECTED TO SAID HOUSING, ANNULARLY ARRANGED DOWNWARDLY DIRECTED CUTTING NOZZLES MOUNTED ON SAID HOUSING ABOVE AND SPACED FROM SAID JETTING NOZZLE, SUBSTANTIALLY HORIZONTALLY OUTWARDLY DIRECTED SLICING NOZZLES MOUNTED ON SAID HOUSING, ABOVE SAID CUTTING NOZZLES, MEANS ON SAID BUOYANT STATION FOR APPLYING OPERATING FLUIDS TO THE NOZZLE OF SAID JET LIFTER, SAID JETTING NOZZLES, SAID CUTTING NOZZLES AND SAID SLICING NOZZLES.
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) | 1967-10-20 | 1968-04-20 | 1968-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-20 | 1972-04-20 | 1972-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-20 | 1976-04-20 | 1976-10-20 | $7700.00 | Window Closed / Lapsed |