Patent US4021135A successfully refreshed from Google Patents.
US4021135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wind turbine
Assignee: Individual
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Filing: 1975-10-09
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Granted: 1977-05-03
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Expires: 1995-10-09
Abstract
Abstract A wind turbine including a reaction type turbine wheel instead of an impulse type turbine which is normally used for receiving the wind and more efficiently deriving power therefrom and an augmenter means for producing a vortex downstream of the turbine at the exit of the turbine to increase the pressure differential across the turbine thereby increasing the power that may be extracted from the wind.
Inventors
- 👤 Nicholas F. Pedersen
- 👤 Gaylord O. Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:27
CPC Classifications
F; F03; F03D; F03D1/00; F03D1/04; F05; F05B; F05B2240/00; F05B2240/10; F05B2240/13; F05B2240/133; F05B2250/00; F05B2250/50; F05B2250/501; F05B2250/5011; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/72; Y10; Y10S; Y10S415/00; Y10S415/905; Y10S415/908
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
156 words
In a wind turbine, a reaction turbine comprising blades for receiving the wind and deriving power therefrom and augmenter means for producing a vortex downstream of the turbine at the exit of the turbine, said augmenting means comprising a plurality of fixed blades in the path of the wind, a first cowling surrounding the turbine, said vortex augmenting means surrounding said cowling, a second cowling surrounding said augmenting means, said blades of said augmenting means extending between said cowlings, said blades of said augmenting means being angularly related with respect to the axis of the wind turbine in the same direction as the blades of the reaction turbine, said cowling surrounding said augmenting means including an inlet, a central portion and an outlet defining a venturi, said reaction turbine being adjacent said central portion of the second cowling, said second cowling extending substantially from the inlet to the turbine in spaced relationship to the first-mentioned cowling.
Claim 2
Dependent Claim
156 words
In a wind turbine, a reaction turbine comprising blades for receiving the wind and deriving power therefrom and augmenter means for producing a vortex downstream of the turbine at the exit of the turbine, said augmenting means comprising a plurality of fixed blades in the path of the wind, a first cowling surrounding the turbine, said vortex augmenting means surrounding said cowling, a second cowling surrounding said augmenting means, said blades of said augmenting means extending between said cowlings, said blades of said augmenting means being angularly related with respect to the axis of the wind turbine in the same direction as the blades of the reaction turbine, said cowling surrounding said augmenting means including an inlet, a central portion and an outlet defining a venturi, said reaction turbine being adjacent said central portion of the second cowling, said second cowling extending substantially from the inlet to the turbine in spaced relationship to the first-mentioned cowling.
Claim 3
Dependent Claim
16 words
The combination set forth in claim 1 wherein said fixed blades are of substantially uniform thickness.
Claim 4
Dependent Claim
24 words
The combination set forth in claim 2 wherein said fixed blades form an angle such that they redirect the air at approximately 60° .
Claim 5
Dependent Claim
21 words
The combination set forth in claim 1 including a spoiler at the outlet of the first-mentioned cowling extending generally radially outwardly.
Claim 6
Dependent Claim
20 words
The combination set forth in claim 4 wherein said spoiler diverts the air surrounding said cowling at approximately 68° .
Claim 7
Dependent Claim
43 words
The combination set forth in claim 1 wherein said reaction turbine and said vortex augmenting means includes blades constructed and arranged such that the axial velocity of the vortex is slightly greater than the axial velocity of the exit from the reaction turbine.
Claim 8
Dependent Claim
25 words
The combination set forth in claim 1 wherein the diameter of the first-mentioned cowling at the inlet is greater than the diameter at the outlet.
Claim 9
Dependent Claim
31 words
The combination set forth in claim 1 including a stationary housing part concentric with and in advance of said turbine and radial blades supporting said housing part and defining air straighteners.
Claim 10
Dependent Claim
106 words
In a wind turbine, a reaction type turbine having blades for receiving the wind and deriving power therefrom and augmenting means for receiving wind for producing a vortex downstream of the reaction turbine at the exit of the reaction turbine, concentric with the reaction turbine and rotating in the same direction as the air emanating from the reaction turbine, a cowling surrounding the turbine, said augmenting means surrounding said cowling, another cowling surrounding said augmenting means, said cowling surrounding said augmenting means includes an inlet, a central portion and an outlet, said reaction turbine being adjacent said central portion of said cowling surrounding said augmenting means.
Claim 11
Dependent Claim
106 words
In a wind turbine, a reaction type turbine having blades for receiving the wind and deriving power therefrom and augmenting means for receiving wind for producing a vortex downstream of the reaction turbine at the exit of the reaction turbine, concentric with the reaction turbine and rotating in the same direction as the air emanating from the reaction turbine, a cowling surrounding the turbine, said augmenting means surrounding said cowling, another cowling surrounding said augmenting means, said cowling surrounding said augmenting means includes an inlet, a central portion and an outlet, said reaction turbine being adjacent said central portion of said cowling surrounding said augmenting means.
Claim 12
Dependent Claim
29 words
The combination set forth in claim 9 wherein said cowling surrounding said augmenting means extends substantially from the inlet to the turbine in spaced relationship to the first-mentioned cowling.
Claim 13
Dependent Claim
24 words
The combination set forth in claim 10 including a spoiler at the outlet of said cowling surrounding said augmenting means extending generally radially outwardly.
Claim 14
Dependent Claim
20 words
The combination set forth in claim 11 wherein said spoiler diverts the air surrounding said cowling at approximately 68° .
Claim 15
Dependent Claim
28 words
The combination set forth in claim 10 wherein the diameter of said cowling surrounding said augmenting means at the inlet is greater than the diameter at the outlet.
Claim 16
Dependent Claim
15 words
The combination set forth in claim 13 including power take-off means from said reaction turbine.
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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) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |