US4048947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary device driven by a moving fluid
Assignee: Individual
•
Filing: 1976-01-20
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Granted: 1977-09-20
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Expires: 1996-01-20
Abstract
Abstract A rotary device driven by a moving fluid, such as water or air, for generating a rotary movement comprises a cylindrical or frusto-conical rotor having a vertical axis, the rotor having a plurality of identical blades distributed around the periphery of the rotor, each blade having a symmetrical aerodynamic profile and being mounted so as to freely rotate about a substantially vertical axis parallel to its leading edge. The device may be used to power a screw driven boat, a wheeled vehicle or other machinery.
Inventors
- 👤 Charles Andre Sicard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:04
CPC Classifications
F; F03; F03B; F03B17/00; F03B17/06; F03B17/062; F03B17/065; F03D; F03D3/00; F03D3/06; F03D3/062; F03D3/066; F03D3/067; F05; F05B; F05B2240/00; F05B2240/20; F05B2240/21; F05B2240/211; F05B2260/00; F05B2260/70; F05B2260/72; Y; Y02; Y02E; Y02E10/00; Y02E10/20; Y02E10/30; Y02E10/70; Y02E10/74
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
130 words
A rotatable device powered by a moving fluid such as water or air, comprising a generally cylindrical rotor disposed for rotation about a vertical axis, a plurality of blades mounted on said rotor adjacent its periphery for free unrestrained rotation, in normal usage, through 360° about essentially vertical axes passing through said blades, each of said blades having a symmetrical aerodynamic profile and a leading edge remote from the blade axis, a counterweight rigid with each of said blades, said blades and counterweight being constructed such that the center of gravity of each blade and its associated counterweight is spaced from associated blade axis and lies in a plane passing through the blade axis and which is perpendicular to a chord connecting said blade axis and the blade leading edge.
Claim 2
Dependent Claim
130 words
A rotatable device powered by a moving fluid such as water or air, comprising a generally cylindrical rotor disposed for rotation about a vertical axis, a plurality of blades mounted on said rotor adjacent its periphery for free unrestrained rotation, in normal usage, through 360° about essentially vertical axes passing through said blades, each of said blades having a symmetrical aerodynamic profile and a leading edge remote from the blade axis, a counterweight rigid with each of said blades, said blades and counterweight being constructed such that the center of gravity of each blade and its associated counterweight is spaced from associated blade axis and lies in a plane passing through the blade axis and which is perpendicular to a chord connecting said blade axis and the blade leading edge.
Claim 3
Dependent Claim
98 words
A device according to claim 1, in which each said blade is associated with two counterweights, a first counterweight being located at the end of an arm situated in a plane which passes through the axis of rotation of said blade and is at right angles to the chord of said blade; the second counterweight being located at the end of an arm situated in the extension of the chord of said blade and thus at 90° to the first counterweight, the second counterweight having a weight which balances the blade in relation to its axis of rotation.
Claim 4
Dependent Claim
37 words
A device according to claim 1, wherein said rotor is mounted fast on a vertical shaft mounted rotatably between two bearings, the lower bearing being fixed to a floor and the upper bearing being held by bracing.
Claim 5
Dependent Claim
32 words
A device according to claim 1, wherein said rotor is arranged at the top of a rotating mast fitted to a boat and said rotor drives a propulsive screw through a transmission.
Claim 6
Dependent Claim
35 words
A device according to claim 1, wherein said rotor is arranged at the top of a rotating mast fitted to a land vehicle and said rotor drives one or more drive wheels through a transmission.
Claim 7
Dependent Claim
24 words
A device as claimed in claim 1, wherein the diameter of said rotor is smaller at its lower end than at its upper end.
Claim 8
Dependent Claim
18 words
A device according to claim 1, further comprising transmission means interconnecting said rotor and a pump or motor.
Claim 9
Dependent Claim
75 words
In the rotatable device as defined in claim 1 wherein said blade is symmetrical at rest and constructed in such a way that under the action of an aerodynamic force its profile is deformed so as to become a conventional wing profile and the deformation is identical and symmetrical in relation to the chord of said blade when the aerodynamic force acting on the blade passes from one side of the blade to the other.
Claim 10
Dependent Claim
59 words
In a rotatable device as defined in claim 8, said blade comprising a tube and two flexible sheets, said tube forming the leading edge of said rotor blade, said sheets being fixed to said tube at diametrically opposite flat surfaces while the free ends of said two sheets are glued together to constitute the trailing edge of said blade.
Claim 11
Dependent Claim
16 words
In a rotatable device as defined in claim 9, said tube being a standard metal tube.
Claim 12
Dependent Claim
14 words
In a rotatable device as defined in claim 9, said sheets being polyester sheets.
Claim 13
Dependent Claim
14 words
In a rotatable device as defined in claim 9, said sheets being metal sheets.
Claim 14
Dependent Claim
30 words
In a rotatable device as defined in claim 9, said sheets being joined to said tube and glued together to constitute the trailing edge by means of an epoxy adhesive.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-19 | 1981-03-21 | 1981-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-19 | 1985-03-21 | 1985-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-19 | 1989-03-21 | 1989-09-20 | $7700.00 | Window Closed / Lapsed |