Patent US4329116A successfully refreshed from Google Patents.
US4329116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wind turbine of cross-flow type
Assignee: Individual
•
Filing: 1979-10-05
•
Granted: 1982-05-11
•
Expires: 1999-10-05
Abstract
Abstract Wind turbine of cross-flow type with constant or cyclically adjustable blade angle. The vanes (2) consist of one or more sets of blades with arched or, in sections, straight extension in longitudinal direction, comprising several substantially parallelly extending blades (3, 4 8), the spacing of which from one another is fixed by means of a number of spacing elements (5, 9) having aerodynamic profiling and providing a spacing of the order of magnitude of between 1/2 and 3 times the blade chord.
Inventors
- 👤 Olle Ljungstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:00
CPC Classifications
F; F03; F03D; F03D3/00; F03D3/06; F03D3/061; F05; F05B; F05B2240/00; F05B2240/20; F05B2240/21; F05B2240/211; F05B2240/212; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/74
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
144 words
In a wind turbine of the cross flow type having at least one vane mounted at upper and lower ends thereof to a rotor shaft for peripheral rotation with or about said rotor shaft, the improvement comprising: said at least one vane being continuously curved relative to said rotor shaft between the ends of said at least one vane mounted to said rotor shaft, and said at least one vane comprising a plurality of substantially parallel blades extending in a longitudinal direction along the entire length of the vane, and a plurality of spacing elements mounted to and disposed between said plurality of blades for spacing said plurality of blades apart from each other, said spacing elements being of a sufficient size to provide a spacing between said plurality of blades of the order of magnitude of 1/2 to 3 times the blade chord.
Claim 2
Dependent Claim
144 words
In a wind turbine of the cross flow type having at least one vane mounted at upper and lower ends thereof to a rotor shaft for peripheral rotation with or about said rotor shaft, the improvement comprising: said at least one vane being continuously curved relative to said rotor shaft between the ends of said at least one vane mounted to said rotor shaft, and said at least one vane comprising a plurality of substantially parallel blades extending in a longitudinal direction along the entire length of the vane, and a plurality of spacing elements mounted to and disposed between said plurality of blades for spacing said plurality of blades apart from each other, said spacing elements being of a sufficient size to provide a spacing between said plurality of blades of the order of magnitude of 1/2 to 3 times the blade chord.
Claim 3
Dependent Claim
23 words
A wind turbine as claimed in claim 1 wherein said at least one vane is formed from a plurality of interconnected joined segments.
Claim 4
Dependent Claim
43 words
A wind turbine as claimed in claim 2 wherein said vane is formed from two joined segments, each of said segments being straight and having a constant cross sectional area, and assembling elements for connecting said joined segments together in a curved shape.
Claim 5
Dependent Claim
54 words
A wind turbine as claimed in claim 2, wherein said vane is formed from at least three joined segments, each of said segments being straight and having a constant cross sectional area, and assembling elements disposed between adjacent abutting ends of said joined segments for connecting said joined segments together in a curved shape.
Claim 6
Dependent Claim
34 words
A wind turbine as claimed in claim 1 further including at least three radial braces mounted to both the upper and lower ends of said vane for securing said vane to said rotor shaft.
Claim 7
Dependent Claim
31 words
A wind turbine as claimed in claim 5 further including balance weights connected to the upper and lower ends of said vane by brackets coupled to the ends of said vane.
Claim 8
Dependent Claim
33 words
A wind turbine as claimed in claims 1 or 2 in which each of said plurality of blades comprising said vane are arranged to define a minor angular displacement between the chord planes.
Claim 9
Dependent Claim
26 words
A wind turbine as claimed in claim 1 wherein said at least one vane is formed from at least two of said substantially parallel extending blades.
Claim 10
Dependent Claim
26 words
A wind turbine as claimed in claim 1 wherein said at least one vane is formed from at least three of said substantially parallel extending blades.
References Cited (Backward Citations)
FR539171A
Cited
US1835018A
Cited
US1820529A
Cited
GB403889A
Cited
US2344266A
Cited
US3918839A
Cited
FR2298707A1
Cited
US4130380A
Cited
US4081221A
Cited
US4151424A
Cited
US4115032A
Cited
US4142822A
Cited
US4264279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-10 | 1985-11-09 | 1986-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-10 | 1989-11-09 | 1990-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-10 | 1993-11-09 | 1994-05-11 | $7700.00 | Window Closed / Lapsed |