Patent US3944840A successfully refreshed from Google Patents.
US3944840A
Expired / Lapsed
US
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Wind power conversion system
Assignee: Individual
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Filing: 1974-08-07
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Granted: 1976-03-16
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Expires: 1994-08-07
Abstract
Abstract A wind-to-electric power conversion system is disclosed having ratio-variable entrance and exit openings. The ratio is set by sensing the velocity of the incoming wind, thereby effecting the velocity of the blade set driving an A.C. generator through a flywheel and thereby stabilizing the generator speed.
Inventors
- 👤 John H. Troll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:56
CPC Classifications
F; F03; F03D; F03D3/00; F03D3/04; F03D3/0427; F03D7/00; F03D7/02; F03D7/06; F03D9/00; F03D9/10; F03D9/12; F05; F05B; F05B2220/00; F05B2220/70; F05B2220/706; F05B2270/00; F05B2270/30; F05B2270/32; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/74; Y02E60/00; Y02E60/16; Y02E70/00; Y02E70/30
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
109 words
A wind to electric system comprising: a. a wind collecting structure having an entrance and exit opening; b. means for varying the areas of said entrance and exit openings relative to one another; c. means for sensing the velocity of an incoming wind; d. means coupled to said sensing means for adjusting the ratio between the areas of the entrance and exit openings in accordance with the sensed velocity; e. a wind-driven blade set disposed at the exit opening to receive the wind therefrom; f. flywheel coupled to the wind-driven blade set; g. clutch for decoupling said flywheel and blade set; h. an A.C. generator coupled to said flywheel.
Claim 2
Dependent Claim
109 words
A wind to electric system comprising: a. a wind collecting structure having an entrance and exit opening; b. means for varying the areas of said entrance and exit openings relative to one another; c. means for sensing the velocity of an incoming wind; d. means coupled to said sensing means for adjusting the ratio between the areas of the entrance and exit openings in accordance with the sensed velocity; e. a wind-driven blade set disposed at the exit opening to receive the wind therefrom; f. flywheel coupled to the wind-driven blade set; g. clutch for decoupling said flywheel and blade set; h. an A.C. generator coupled to said flywheel.
Claim 3
Dependent Claim
39 words
The system claimed in claim 1 further comprising means for sensing the relative velocity of the blade set and flywheel, a means coupled to said clutch means for connecting said blade set and flywheel when the former is faster.
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) | 1979-03-16 | 1979-09-15 | 1980-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-16 | 1983-09-15 | 1984-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-16 | 1987-09-15 | 1988-03-16 | $7700.00 | Window Closed / Lapsed |