Patent US3675424A successfully refreshed from Google Patents.
US3675424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nozzle for ship{40 s propeller with water ejection along the trailing edge of the nozzle
Assignee: Lips NV
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Filing: 1970-05-18
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Granted: 1972-07-11
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Expires: 1990-05-18
Abstract
Abstract A Kort nozzle surrounding a ship''s propeller has slots along the inner and outer sides of its trailing edge. Water can be selectively drawn into the inner slots and ejected from the outer slots, or vice versa, to augment the action of the nozzle as an accelerating nozzle or as a decelerating nozzle. Alternatively, water can be drawn in and ejected selectively about the periphery of the nozzle to augment steering.
Inventors
- 👤 Marinus Willem Corn Oosterveld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:27
CPC Classifications
B; B63; B63H; B63H5/00; B63H5/07; B63H5/14; B63H5/15
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
159 words
A nozzle for surrounding a ship''s propeller, said nozzle having a leading edge and a trailing edge defining between them a nozzle profile, there being at least one annular slot about the inner periphery of the trailing edge of the nozzle and at least one annular slot about the outer periphery of the trailing edge of the nozzle, means to move water through said at least one annular slot about the outer periphery of the trailing edge of the nozzle in a direction at an angle to said nozzle profile, and means simultaneously to move water in the opposite direction through said at least one annular slot about the inner periphery of the trailing edge of the nozzle at an angle to the nozzle profile which is opposite to said angle of said outer periphery slot whereby water moves in one direction through said outer periphery slot while simultaneously moving in the opposite direction through said inner periphery slot.
Claim 2
Dependent Claim
159 words
A nozzle for surrounding a ship''s propeller, said nozzle having a leading edge and a trailing edge defining between them a nozzle profile, there being at least one annular slot about the inner periphery of the trailing edge of the nozzle and at least one annular slot about the outer periphery of the trailing edge of the nozzle, means to move water through said at least one annular slot about the outer periphery of the trailing edge of the nozzle in a direction at an angle to said nozzle profile, and means simultaneously to move water in the opposite direction through said at least one annular slot about the inner periphery of the trailing edge of the nozzle at an angle to the nozzle profile which is opposite to said angle of said outer periphery slot whereby water moves in one direction through said outer periphery slot while simultaneously moving in the opposite direction through said inner periphery slot.
Claim 3
Dependent Claim
96 words
A nozzle for surrounding a ship''s propeller, means to eject water from the nozzle along the trailing edge of the nozzle at an angle to the nozzle profile, said ejecting means comprising at least one annular slot about the trailing edge of the nozzle, there being at least one annular slot about the inner periphery of the trailing edge of the nozzle and at least one annular slot about the outer periphery of the trailing edge of the nozzle, and means for separately moving water through the inner periphery and outer periphery slots in different directions.
Claim 4
Dependent Claim
96 words
A nozzle for surrounding a ship''s propeller, means to eject water from the nozzle along the trailing edge of the nozzle at an angle to the nozzle profile, said ejecting means comprising at least one annular slot about the trailing edge of the nozzle, there being at least one annular slot about the inner periphery of the trailing edge of the nozzle and at least one annular slot about the outer periphery of the trailing edge of the nozzle, and means for separately moving water through the inner periphery and outer periphery slots in different directions.
Claim 5
Dependent Claim
89 words
A nozzle for surrounding a ship''s propeller, means to eject water from the nozzle along the trailing edge of the nozzle at an angle to the nozzle profile, said ejecting means comprising at least one annular slot about the trailing edge of the nozzle, said at least one slot being in the form of a plurality of separate slots disposed in end-to-end relation in a line about a periphery of the trailing edge of the nozzle, and means for separately supplying water to and withdrawing water from said slots.
Claim 6
Dependent Claim
89 words
A nozzle for surrounding a ship''s propeller, means to eject water from the nozzle along the trailing edge of the nozzle at an angle to the nozzle profile, said ejecting means comprising at least one annular slot about the trailing edge of the nozzle, said at least one slot being in the form of a plurality of separate slots disposed in end-to-end relation in a line about a periphery of the trailing edge of the nozzle, and means for separately supplying water to and withdrawing water from said slots.
Claim 7
Dependent Claim
27 words
A nozzle as claimed in claim 3, said supply and withdrawal means comprising a plurality of distribution chambers in the nozzle each individual to a said slot.
References Cited (Backward Citations)
US3029045A
Cited
US3170284A
Cited
US3214903A
Cited
US3455268A
Cited
US3508517A
Cited
US3499412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |