Patent US4134707A successfully refreshed from Google Patents.
US4134707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wind turbine apparatus
Assignee: Individual
•
Filing: 1977-04-26
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Granted: 1979-01-16
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Expires: 1997-04-26
Abstract
Abstract The Specification discloses a segmented wind turbine which can be added to incrementally to increase the driving force and power generation of the machine. By this means the smaller diameter rotors that are more easily handled and that put the minimum of stress on the wind turbine apparatus can be used in series to achieve the power output desired. Each segment has a venturi means incorporated into the elements of the apparatus to enhance the apparent wind speed. Also disclosed are novel means for operatively supporting the moving parts of the apparatus. In a preferred embodiment an exoskeletal frame is made in segments that can be stacked one upon the other. Each segment of frame has arms which converge inwardly toward the axial center of the apparatus. There a hoop connects the ends of the inwardly converging arms and defines an axial aperture. Inside this axial aperture a segment of drive shaft and a concentric collar are supported by thrust bearings which are in turn supported by the concentric hoop attached to the arms of the frame. Each set of arms and the associated bearings support the drive shaft, a rotor on the drive shaft, and a wind shield surrounding the rotor immediately above the arms. The wind shield is of a novel structure, having two spaced side walls which define openings for receiving wind through the rotors and discharging the wind. One of the walls forms a venturi with the rotor.
Inventors
- 👤 Marion H. Ewers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:28
CPC Classifications
F; F03; F03D; F03D3/00; F03D3/02; F03D13/00; F03D13/20; F03D13/22; F03D3/04; F03D3/0436; F03D3/0445; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/728; Y02E10/74
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
85 words
A wind turbine apparatus comprising: a vertically rising exoskeletal frame having at least two vertically spaced sets of radially converging ribs, means defining an axial opening connecting said ribs, a vertical drive shaft disposed in said axial opening, a collar concentrically disposed around said shaft within said axial opening, means for rotatably supporting said shaft and said collar within said axial opening; a wind shield carried by said collar, and a rotor carried by said shaft between said vertically spaced sets of radially converging ribs.
Claim 2
Dependent Claim
85 words
A wind turbine apparatus comprising: a vertically rising exoskeletal frame having at least two vertically spaced sets of radially converging ribs, means defining an axial opening connecting said ribs, a vertical drive shaft disposed in said axial opening, a collar concentrically disposed around said shaft within said axial opening, means for rotatably supporting said shaft and said collar within said axial opening; a wind shield carried by said collar, and a rotor carried by said shaft between said vertically spaced sets of radially converging ribs.
Claim 3
Dependent Claim
39 words
The apparatus of claim 1 wherein said shield comprises a first wall, a second wall, wind receiving and discharging openings between said walls, and venturi means defined by the one of said walls and the blades of said rotor.
Claim 4
Dependent Claim
17 words
The apparatus of claim 2 wherein the ends of said first wall flare outwardly of said rotor.
Claim 5
Dependent Claim
14 words
The apparatus of claim 2 wherein the rotor blades are saw toothed in cross-section.
Claim 6
Dependent Claim
15 words
The apparatus of claim 3 wherein said second wall flares outwardly on the lee side.
Claim 7
Dependent Claim
54 words
The apparatus of claim 1 wherein the means for rotatably confining said shaft and said collar comprise two concentrically disposed sets of anti-friction bearings, the outer set of which rotatably connects said means for connecting said radially converging ribs and said collar, the inner set of which rotatably connects said collar and said shaft.
Claim 8
Dependent Claim
25 words
The apparatus of claim 1 wherein the means for connecting said converging arms comprises a hoop attached to the ends of said axially converging arms.
Claim 9
Dependent Claim
15 words
The apparatus of claim 1 wherein said collar is integrally formed with said wind shield.
Claim 10
Dependent Claim
37 words
The apparatus of claim 1 with the addition of means for vertically extending said shaft and said vertically rising frame to carry a plurality of said rotors, wind shields and associated elements to provide additional turbine power.
Claim 11
Dependent Claim
23 words
The apparatus of claim 9 wherein said means for vertically extending said frame and said shaft comprise reciprocally mating male and female ends.
Claim 12
Dependent Claim
17 words
The apparatus of claim 1 with the addition of means for governing the speed of said turbine.
Claim 13
Dependent Claim
62 words
A wind turbine apparatus comprising: a frame; a drive shaft rotatably carried by said frame; a rotor carried by said shaft; a wind shield rotatably and concentrically supported around said rotor, said shield comprising a pair of side walls defining wind receiving and discharging openings between said side walls, one of said side walls defining a venturi in combination with said rotor.
Claim 14
Dependent Claim
62 words
A wind turbine apparatus comprising: a frame; a drive shaft rotatably carried by said frame; a rotor carried by said shaft; a wind shield rotatably and concentrically supported around said rotor, said shield comprising a pair of side walls defining wind receiving and discharging openings between said side walls, one of said side walls defining a venturi in combination with said rotor.
Claim 15
Dependent Claim
16 words
The apparatus of claim 12 in combination with means for vertically stacking a plurality of rotors.
Claim 16
Dependent Claim
74 words
A wind turbine apparatus comprising a vertically rising series of discrete segments, each segment comprising a frame, means carried by said frame for supporting a vertical drive shaft a drive shaft supported by said means, a collar concentrically disposed around said shaft and independently rotatable therefrom, a rotor carried by said shaft, a wind shield carried by said collar, and means for adjusting the position of said shield relative the blades of said rotor.
Claim 17
Dependent Claim
74 words
A wind turbine apparatus comprising a vertically rising series of discrete segments, each segment comprising a frame, means carried by said frame for supporting a vertical drive shaft a drive shaft supported by said means, a collar concentrically disposed around said shaft and independently rotatable therefrom, a rotor carried by said shaft, a wind shield carried by said collar, and means for adjusting the position of said shield relative the blades of said rotor.
Claim 18
Dependent Claim
57 words
The apparatus of claim 14 wherein said frame comprises a plurality of standards disposed radially outward of said rotor and shield, and said means for supporting said shaft and collar comprises a plurality of inwardly stretching arms terminating in a hoop, and bearings operatively disposed within said hoop to rotatably secure and support said shaft and collar.
References Cited (Backward Citations)
DE535624C
Cited
US1640269A
Cited
US1810113A
Cited
US1974008A
Cited
US2032651A
Cited
US2059356A
Cited
US2431111A
Cited
DE2405767A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-15 | 1982-07-17 | 1983-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-15 | 1986-07-17 | 1987-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-15 | 1990-07-17 | 1991-01-16 | $7700.00 | Window Closed / Lapsed |