US4673822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wind electric generator
Assignee: Individual
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Filing: 1985-10-17
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Granted: 1987-06-16
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Expires: 2005-10-17
Abstract
Abstract Wind mill blades are mounted on spokes provided on a power shaft via springs, and thereby in an ordinary wind velocity the wind mill blades are adjusted into a prescribed angle, while in a storm they are made parallel to the direction of a wind, thus enabling the wind mill blades, etc., to be prevented from being damaged and the wind mill blades to be large-sized.
Inventors
- 👤 Naomi Kikuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:23
CPC Classifications
F; F03; F03D; F03D7/00; F03D7/02; F03D7/022; F03D7/0236; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/72
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
177 words
A power electric generator comprising: (a) a power shaft having a horizontal axis of rotation and a support column, said power shaft rotatably coupled to said support column for free rotation about a vertical axis; (b) a plurality of spokes radially extending from said power shaft; (c) a plurality of springs having first and second ends, with first ends connected to said spokes; (d) a plurality of wind mill blades, each blade spaced apart from said spokes by at least one spring, said springs having said second ends supporting said blades and biasing said blades in a first extreme position facing typical air currents for rotation of said power shaft about said horizontal axis and about said vertical axis to align said power shaft parallel the direction of the air current, said springs providing a force such that storm type air currents move said wind mill blades to a second extreme position parallel to said storm type air currents, said power shaft rotation about the horizontal axis causing rotation of a main shaft of an electric generator.
Claim 2
Dependent Claim
177 words
A power electric generator comprising: (a) a power shaft having a horizontal axis of rotation and a support column, said power shaft rotatably coupled to said support column for free rotation about a vertical axis; (b) a plurality of spokes radially extending from said power shaft; (c) a plurality of springs having first and second ends, with first ends connected to said spokes; (d) a plurality of wind mill blades, each blade spaced apart from said spokes by at least one spring, said springs having said second ends supporting said blades and biasing said blades in a first extreme position facing typical air currents for rotation of said power shaft about said horizontal axis and about said vertical axis to align said power shaft parallel the direction of the air current, said springs providing a force such that storm type air currents move said wind mill blades to a second extreme position parallel to said storm type air currents, said power shaft rotation about the horizontal axis causing rotation of a main shaft of an electric generator.
Claim 3
Dependent Claim
45 words
A power electric generator according to claim 1, wherein a shock absorber is provided through each spring, each shock absorber having a first end and a second end, said first ends each communicating with a blade and said second ends each communicating with a spoke.
Claim 4
Dependent Claim
146 words
A wind electric generator comprising, (a) an electric generator; (b) a power shaft rotatably coupled to said electric generator to transfer rotational motion to the generator, said power shaft rotatable about a horizontal axis; (c) a support column, said power shaft rotatably coupled to said suport column for rotation about a vertical axis; (d) a plurality of spokes extending radially from said power shaft; and (e) a plurality of wind mill blades and a plurality of springs, each blade attached to a spoke by means of at least one spring, said springs biasing said blades in a first position facing typical air currents, said air currents rotating said power shaft about said vertical axis to align said power shaft parallel to the direction of the air currents, said springs permitting stronger air currents to move said blades toward a second position parallel to said air currents.
Claim 5
Dependent Claim
146 words
A wind electric generator comprising, (a) an electric generator; (b) a power shaft rotatably coupled to said electric generator to transfer rotational motion to the generator, said power shaft rotatable about a horizontal axis; (c) a support column, said power shaft rotatably coupled to said suport column for rotation about a vertical axis; (d) a plurality of spokes extending radially from said power shaft; and (e) a plurality of wind mill blades and a plurality of springs, each blade attached to a spoke by means of at least one spring, said springs biasing said blades in a first position facing typical air currents, said air currents rotating said power shaft about said vertical axis to align said power shaft parallel to the direction of the air currents, said springs permitting stronger air currents to move said blades toward a second position parallel to said air currents.
Claim 6
Dependent Claim
58 words
The generator of claim 3 wherein said generator further comprises a plurality of shock absorbers, having first and second ends, said first ends each communicating with a blade and said second ends each communicating with a spoke, said shock absorbers having a damping quality slowing the movement of said blades from said first position to said second position.
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) | 1990-06-15 | 1990-12-15 | 1991-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-15 | 1994-12-15 | 1995-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-15 | 1998-12-15 | 1999-06-16 | $7700.00 | Window Closed / Lapsed |