US3094795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric-hydraulic dredge
Assignee: Ellicott Machine Corp
•
Filing: 1961-08-07
•
Granted: 1963-06-25
•
Expires: 1981-08-07
Abstract
No abstract record available.
Inventors
- 👤 Fred J Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:05
CPC Classifications
B; B66; B66D; B66D1/00; B66D1/02; B66D1/08; E; E02; E02F; E02F3/00; E02F3/04; E02F3/88; E02F3/90; E02F3/905; E02F3/907; E02F3/92; E02F3/9212; E02F3/9225; E02F3/9231; E02F9/00; E02F9/20; E02F9/2016; E02F9/2025; E02F9/205; B66D2700/00; B66D2700/01; B66D2700/0125; B66D2700/0133; Y; Y10; Y10S; Y10S37/00; Y10S37/902
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
154 words
A DREDGE HAVING A DREDGE LADDER, A ROTARY CUTTER CARRIED BY SAID DREDGE LADDER, A HYDRAULIC MOTOR MOUNTED ON THE LADDER TO DRIVE SAID CUTTER, SAID DREDGE HAVING HAULING MACHINERY INCLUDING A PAIR OF SWING DRUMS, A PAIR OF SPUD DRUMS AND A LADDER DRUM, A HYDRAULIC MOTOR FOR DRIVING SAID DRUMS, HYDRAULIC BRAKE MEANS FOR SAID DRUMS, A FIRST, SECOND AND THIRD HYDRAULIC PUMP, A RESERVOIR PROVIDING FLUID FOR THE INLET OF EACH PUMP, THE OUTPUT OF SAID FIRST PUMP BEING CONNECTED TO SAID CUTTER MOTOR, THE OUTPUT OF SAID SECOND PUMP BEING CONNECTED TO SAID HAULING MACHINERY MOTOR AND THE OUTPUT OF SAID THIRD PUMP BEING CONNECTED TO SAID HYDRAULIC BRAKE MEANS, A CENTRAL CONTROL PANEL, CONTROLS CARRIED BY SAID PANEL FOR SELECTING THE DIRECTIONAL ROTATION OF SAID CUTTER MOTOR AND SAID HAULING MACHINERY MOTOR AND FOR VARYING THE SPEED OF SAID MOTORS AND FOR DIRECTING FLUID TO SAID HYDRAULIC BRAKE MEANS.
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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) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |