Patent US3829160A successfully refreshed from Google Patents.
US3829160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic dredging apparatus
Assignee: Cegelec SA
•
Filing: 1973-06-20
•
Granted: 1974-08-13
•
Expires: 1993-06-20
Abstract
Abstract Dredging bucket for hydraulic dredging of modules at a great depth, constituted by a main frame on skids, means for bringing the scraped up material into a current of water by the advancing of the dredging bucket and means bringing the nodules cleared of clay towards the hydraulic tubes provided with pumping systems to bring them to the surface.
Inventors
- 👤 E Condolios
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:48
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/88; E02F3/90; E02F3/92; E02F3/9212; E02F3/9225; E02F3/9237; E21; E21C; E21C50/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
166 words
An improved dredging bucket for the hydraulic dredging of nodules of ores on the sea bed and the removing of clay dredged with said nodules comprising skids, a central hopper, a main frame mounted on said skids and supporting said central hopper enabling it to slide on the sea bed, scraping means supported by said main frame for scraping the sea bed, means for bringing the scraped up material including nodules and clay into a current of washing water produced by the forward movement of the main frame, two lateral wheels having perforated vanes mounted behind said scraping means for ensuring the washing of the nodules and the separating of clay therefrom, means for driving said wheels in a rotating movement, helical scraper means placed at the base of said vanes for bringing the nodules which become free from the clay towards said central hopper including an inlet for sea water, and hydraulic tube means for drawing said nodules to the surface with the sea water.
Claim 2
Dependent Claim
166 words
An improved dredging bucket for the hydraulic dredging of nodules of ores on the sea bed and the removing of clay dredged with said nodules comprising skids, a central hopper, a main frame mounted on said skids and supporting said central hopper enabling it to slide on the sea bed, scraping means supported by said main frame for scraping the sea bed, means for bringing the scraped up material including nodules and clay into a current of washing water produced by the forward movement of the main frame, two lateral wheels having perforated vanes mounted behind said scraping means for ensuring the washing of the nodules and the separating of clay therefrom, means for driving said wheels in a rotating movement, helical scraper means placed at the base of said vanes for bringing the nodules which become free from the clay towards said central hopper including an inlet for sea water, and hydraulic tube means for drawing said nodules to the surface with the sea water.
Claim 3
Dependent Claim
24 words
Arrangement according to claim 1, characterized in that said lateral wheels with the perforated vanes are driven in a rotating movement by hydraulic motors.
Claim 4
Dependent Claim
23 words
Arrangement according to claim 2 wherein said helical scrapers are disposed on said lateral wheels to displace said nodules toward said central hopper.
Claim 5
Dependent Claim
24 words
Arrangement according to claim 3 wherein said hydraulic tube means includes pumping means for pumping sea water through said central hopper to the surface.
Claim 6
Dependent Claim
27 words
Arrangement according to claim 4 wherein said perforated vanes have holes therein of a size capable of passing said nodules and too small to pass the clay.
Claim 7
Dependent Claim
22 words
Arrangement according to claim 5 wherein said scraping means comprises a blade transverse to said skids and angled to said sea bed.
Claim 8
Dependent Claim
21 words
Arrangement according to claim 6 wherein said perforated vanes are helically curved radially outward of said wheels from said helical scrapers.
Claim 9
Dependent Claim
18 words
Arrangement according to claim 7 wherein said scrapers are helically disposed in the longitudinal direction of said wheels.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |