Patent US3589833A successfully refreshed from Google Patents.
US3589833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marine propeller attachment and assembly
Assignee: Michigan Wheel Corp
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Filing: 1969-11-13
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Granted: 1971-06-29
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Expires: 1989-11-13
Abstract
Abstract Anticavitation, flow-through propeller attachment and combination employing inner and outer concentric but axially displaced rings, the inner being forwardly of the outer and attachable at the mounting of the propeller hub to the drive shaft. The outer ring is connected to the inner ring by radially and rearwardly extending spokes that form generally V-shaped recesses with the outer ring to receive the rear edge of the hub. The outer ring extends forwardly around the hub rear edge, terminating in a waterflow-controlling forward face and shearing edge.
Inventors
- 👤 Diore Louis Lancioni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 00:48
CPC Classifications
B; B63; B63H; B63H1/00; B63H1/02; B63H1/12; B63H1/14; B63H1/18; B63H1/28; B63H2001/283
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
104 words
A fluid flow control, anticavitation ring unit attachment to the annular rear edge of a flow-through propeller hub comprising: an outer peripheral ring, an inner attachment ring, and a plurality of spokes connecting said rings; said outer ring having a forward waterflow control edge portion and a rearward edge portion; said inner ring being concentric of said outer ring and forwardly of said outer ring forward edge; said spokes extending from said inner ring, radially outwardly and rearwardly to the rearward edge portion of said outer ring, forming a plurality of annularly correlated recesses to receive the rear edge of a flowthrough propeller hub.
Claim 2
Dependent Claim
104 words
A fluid flow control, anticavitation ring unit attachment to the annular rear edge of a flow-through propeller hub comprising: an outer peripheral ring, an inner attachment ring, and a plurality of spokes connecting said rings; said outer ring having a forward waterflow control edge portion and a rearward edge portion; said inner ring being concentric of said outer ring and forwardly of said outer ring forward edge; said spokes extending from said inner ring, radially outwardly and rearwardly to the rearward edge portion of said outer ring, forming a plurality of annularly correlated recesses to receive the rear edge of a flowthrough propeller hub.
Claim 3
Dependent Claim
20 words
The fluid flow control ring unit in claim 1 wherein said forward waterflow control edge portion has a water-shearing edge.
Claim 4
Dependent Claim
22 words
The fluid flow control ring unit in claim 2 wherein said shearing edge has an angle of no greater than about 90*.
Claim 5
Dependent Claim
21 words
The fluid flow control ring unit in claim 1 wherein said outer ring forward edge portion has a front water-stagnating surface.
Claim 6
Dependent Claim
26 words
The fluid control ring unit in claim 1 wherein said outer ring is tapered radially outwardly from said rear edge portion toward said forward edge portion.
Claim 7
Dependent Claim
137 words
A combination flow-through propeller unit and fluid flow control, anticavitation ring attachment comprising: a propeller unit having a forward end and having a rearward end with a peripheral rear edge, propeller blades extending radially outwardly from said hub, and mounting means centrally within said hub for attachment of said propeller unit to a shaft, a control ring attachment at said propeller unit rearward end, including an outer ring, an inner attachment ring forwardly of said outer ring, and a plurality of spokes extending rearwardly from said inner ring to said outer ring forming generally V-shaped recesses between said spokes and said outer ring; said inner ring being adjacent said mounting means, said propeller unit peripheral rear edge extending into said generally V-shaped recesses, with said outer ring having a waterflow-controlling surface area radially outwardly of said hub.
Claim 8
Dependent Claim
137 words
A combination flow-through propeller unit and fluid flow control, anticavitation ring attachment comprising: a propeller unit having a forward end and having a rearward end with a peripheral rear edge, propeller blades extending radially outwardly from said hub, and mounting means centrally within said hub for attachment of said propeller unit to a shaft, a control ring attachment at said propeller unit rearward end, including an outer ring, an inner attachment ring forwardly of said outer ring, and a plurality of spokes extending rearwardly from said inner ring to said outer ring forming generally V-shaped recesses between said spokes and said outer ring; said inner ring being adjacent said mounting means, said propeller unit peripheral rear edge extending into said generally V-shaped recesses, with said outer ring having a waterflow-controlling surface area radially outwardly of said hub.
Claim 9
Dependent Claim
23 words
The combination in claim 6 wherein said outer ring extends forwardly beyond said peripheral rear edge, and has a forwardly facing waterflow-directing surface.
Claim 10
Dependent Claim
20 words
The fluid flow control ring unit in claim 6 wherein said forward waterflow control edge portion has a water-shearing edge.
Claim 11
Dependent Claim
22 words
The fluid flow control ring unit in claim 6 wherein said shearing edge has an angle of no greater than about 90*.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |