US3748061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller construction
Assignee: Outboard Marine Corp
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Filing: 1971-12-13
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Granted: 1973-07-24
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Expires: 1991-12-13
Abstract
Abstract Disclosed herein is a propeller including a bushing part adapted to be mounted on a propeller shaft for common rotary movement of the bushing part with the propeller shaft, a resilient member bonded to the outer periphery of the bushing and having an outer non-circular configuration including a series of alternate areas of greater and lesser radial distance from the axis of said bushing and a propeller blade part having a hub including a bore with an inner configuration including a series of alternate areas of greater and lesser radial distance from the axis of the propeller and detachably receiving said resilient member.
Inventors
- 👤 D Henrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:37
CPC Classifications
B; B63; B63H; B63H23/00; B63H23/32; B63H23/34; B63H1/00; B63H1/02; B63H1/12; B63H1/14; B63H1/20; B63H2023/342
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
283 words
A propeller including a propeller blade part including a hub having a bore, a bushing part adapted to be mounted on a propeller shaft for common rotary movement of said bushing part with the propeller shaft, a resilient member bonded to one of the outer periphery of said bushing part and the inner periphery of said bore, and means for providing a readily separable connection between said resilient member and the other of saId bushing part and said propeller blade part hub and for providing unlimited rotary slippage between said resilient member and said other of said bushing part and said propeller blade part hub in response to attempted excessive torque transmission between said blade part and said bushing part, said separable connection and rotary slippage providing means comprising the formation of one of said resilient member and said other of said bushing part and said propeller blade part hub with an inner periphery having a configuration including a series of alternate areas of greater and lesser radial distance from the axis of said propeller and the formation of the other of said resilient member and said other of said bushing part and said propeller blade part hub with an outer periphery readily removable from and receivable in said inner periphery and free of fixed connection therewith and having a configuration including a series of alternate areas of greater and lesser radial distance from the axis of said propeller, said inner periphery configuration areas of lesser radial distance having a radial extent less than the radial extent of said outer periphery configuration areas of greater radial distance and greater than the radial extent of said outer periphery configuration areas of lesser radial distance.
Claim 2
Dependent Claim
283 words
A propeller including a propeller blade part including a hub having a bore, a bushing part adapted to be mounted on a propeller shaft for common rotary movement of said bushing part with the propeller shaft, a resilient member bonded to one of the outer periphery of said bushing part and the inner periphery of said bore, and means for providing a readily separable connection between said resilient member and the other of saId bushing part and said propeller blade part hub and for providing unlimited rotary slippage between said resilient member and said other of said bushing part and said propeller blade part hub in response to attempted excessive torque transmission between said blade part and said bushing part, said separable connection and rotary slippage providing means comprising the formation of one of said resilient member and said other of said bushing part and said propeller blade part hub with an inner periphery having a configuration including a series of alternate areas of greater and lesser radial distance from the axis of said propeller and the formation of the other of said resilient member and said other of said bushing part and said propeller blade part hub with an outer periphery readily removable from and receivable in said inner periphery and free of fixed connection therewith and having a configuration including a series of alternate areas of greater and lesser radial distance from the axis of said propeller, said inner periphery configuration areas of lesser radial distance having a radial extent less than the radial extent of said outer periphery configuration areas of greater radial distance and greater than the radial extent of said outer periphery configuration areas of lesser radial distance.
Claim 3
Dependent Claim
37 words
A propeller in accordance with claim 1 wherein said outer periphery configuration areas of greater radial distance have a radial extent substantially equal to the radial extent of said inner periphery configuration areas of greater radial distance.
Claim 4
Dependent Claim
25 words
A propeller in accordance with claim 1 wherein said resilient member is bonded to said bushing part and said resilient element includes said outer configuration.
Claim 5
Dependent Claim
64 words
A propeller in accordance with claim 1 wherein said inner configuration is substantially the same for substantially the length thereof and the dimensions of said inner configuration decrease from the front to the rear thereof and wherein said outer configuration is substantially the same for substantially the length thereof and the dimensions of said outer configuration decrease from the front to the rear thereof.
Claim 6
Dependent Claim
49 words
A propeller in accordance with claim 1 wherein said bushing part has a bore adapted for receiving the propeller shaft and wherein said bushing part bore has a portion adapted for engagement with the propeller shaft to provide common rotary movement of said bushing part with the propeller shaft.
Claim 7
Dependent Claim
14 words
A propeller in accordance with claim 1 wherein said member is of rubber-like material.
Claim 8
Dependent Claim
65 words
A propeller in accordance with claim 1 wherein said propeller blade part includes a series of angularly spaced radially outwardly extending fins projecting from said first mentioned hub and an outer hub connected to said fins and radially spaced from said first mentioned hub to define a series of axially extending passages through said propeller and a series of blades extending from said outer hub.
Claim 9
Dependent Claim
52 words
A propeller in accordance with claim 7 wherein said bushing part has a rearward portion uncovered by said member and said first mentioned hub terminates inwardly of the rear end of said outer hub and includes a flange portion apertured to permit passage therethrough of said rearward portion of said bushing part.
Claim 10
Dependent Claim
122 words
A propeller part adapted to be mounted on a bushing part which is adapted to be mounted on a propeller shaft for common rotary movement of said bushing part with the propeller shaft and which includes a bushing and a resilient member bonded to the outer periphery of said bushing and having an outer configuration including a series of alternate areas of greater and lesser radial distance from the axis of said bushing, said propeller part including a hub having a bore with an inner configuration readily detachably receiving said bushing part and including a series of alternate areas of greater and lesser radial distance from the axis of said propeller affording unlimited rotary slippage in the event of excessive torque transmission.
Claim 11
Dependent Claim
122 words
A propeller part adapted to be mounted on a bushing part which is adapted to be mounted on a propeller shaft for common rotary movement of said bushing part with the propeller shaft and which includes a bushing and a resilient member bonded to the outer periphery of said bushing and having an outer configuration including a series of alternate areas of greater and lesser radial distance from the axis of said bushing, said propeller part including a hub having a bore with an inner configuration readily detachably receiving said bushing part and including a series of alternate areas of greater and lesser radial distance from the axis of said propeller affording unlimited rotary slippage in the event of excessive torque transmission.
Claim 12
Dependent Claim
28 words
A propelleR in accordance with claim 1 including means for transmitting forward and reverse thrust from said blade part to the propeller shaft independently of said resilient member.
Claim 13
Dependent Claim
31 words
A propeller part in accordance with claim 9 and further including means for transmitting forward and reverse thrust from said propeller part to said propeller shaft independently of said resilient member.
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |