US3276415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device consisting of a drive and a rotating wheel producing thrust for the propulsion of boats
Assignee: Firth Cleveland Ltd
•
Filing: 1962-12-11
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Granted: 1966-10-04
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Expires: 1982-12-11
Abstract
No abstract record available.
Inventors
- 👤 Laing Nikolaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:10
CPC Classifications
B; B63; B63H; B63H11/00; B63H11/02; B63H11/04; B63H11/08; B63B; B63B1/00; B63B1/16; B63B1/24; B63B1/246; B63B1/28; B63H1/00; B63H1/02; B63H1/04; B63H2011/087
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
IN A FLOATING OBJECT HAVING A BODY PARTLY SUBMERGED BELOW THE WATER LINE AND PROPULSION MEANS BELOW SAID WATER LINE FOR DRIVING SAID OBJECT, THE IMPROVEMENT WHEREBY SAID PROPULSION MEANS COMPRISES A CROSS-FLOW ROTOR JOURNALED ON SAID BODY SUBSTANTIALLY TRANSVERSELY TO THE DIRECTION OF MOTION, THE SUBMERGED PART OF SAID BODY FORMING AN ENCLOSURE AROUND SAID ROTOR HAVING AN INLET OPENING EXTENDING THROUGH SAID BODY BELOW AND FORWARDLY OF SAID ROTOR AND AN OUTLET OPENING HIGHER THAN SAID INLET OPENING AND SITUATED REARWARDLY OF SAID ROTOR JUST BELOW THE WATER LINE.
Claim 2
Dependent Claim
91 words
IN A FLOATING OBJECT HAVING A BODY PARTLY SUBMERGED BELOW THE WATER LINE AND PROPULSION MEANS BELOW SAID WATER LINE FOR DRIVING SAID OBJECT, THE IMPROVEMENT WHEREBY SAID PROPULSION MEANS COMPRISES A CROSS-FLOW ROTOR JOURNALED ON SAID BODY SUBSTANTIALLY TRANSVERSELY TO THE DIRECTION OF MOTION, THE SUBMERGED PART OF SAID BODY FORMING AN ENCLOSURE AROUND SAID ROTOR HAVING AN INLET OPENING EXTENDING THROUGH SAID BODY BELOW AND FORWARDLY OF SAID ROTOR AND AN OUTLET OPENING HIGHER THAN SAID INLET OPENING AND SITUATED REARWARDLY OF SAID ROTOR JUST BELOW THE WATER LINE.
References Cited (Backward Citations)
US120264A
Cited
US408310A
Cited
GB190724672A
Cited
US2243800A
Cited
GB619722A
Cited
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FR1278376A
Cited
US3155071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |