US3273333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water jet propulsion device
Assignee: Individual
•
Filing: 1963-09-12
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Granted: 1966-09-20
•
Expires: 1983-09-12
Abstract
No abstract record available.
Inventors
- 👤 Poul B Roulund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:20
CPC Classifications
B; B63; B63H; B63H11/00; B63H11/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A WATER JET PROPULSION DEVICE FOR PROPELLING AN AQUATIC VEHICLE COMPRISING A PUMP MOUNTED IN SAID VEHICLE, MEANS FOR FEEDING WATER FROM THE AMBIENT WATER SUPPLY TO SAID PUMP, SAID PUMP IMPELLING SAID WATER IN THE FORM OF A WATER JET, MEANS FOR VENTILATING SAID WATER JET WITH AIR FROM THE AMBIENT SUPPLY THEREOF, AND MEANS FOR EMITTING SAID VENTILATED WATER JET OUT FROM THE HULL OF SAID VEHICLES BELOW THE WATER LINE THEREOF INTO THE AMBIENT WATER IS PROPULSIVE JET FOR SAID VEHICLE.
Claim 2
Dependent Claim
84 words
A WATER JET PROPULSION DEVICE FOR PROPELLING AN AQUATIC VEHICLE COMPRISING A PUMP MOUNTED IN SAID VEHICLE, MEANS FOR FEEDING WATER FROM THE AMBIENT WATER SUPPLY TO SAID PUMP, SAID PUMP IMPELLING SAID WATER IN THE FORM OF A WATER JET, MEANS FOR VENTILATING SAID WATER JET WITH AIR FROM THE AMBIENT SUPPLY THEREOF, AND MEANS FOR EMITTING SAID VENTILATED WATER JET OUT FROM THE HULL OF SAID VEHICLES BELOW THE WATER LINE THEREOF INTO THE AMBIENT WATER IS PROPULSIVE JET FOR SAID VEHICLE.
References Cited (Backward Citations)
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Cited
US1769136A
Cited
FR932548A
Cited
US2954750A
Cited
GB877982A
Cited
US3105353A
Cited
US3149605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |