US4213057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wind energy conversion device
Assignee: Individual
•
Filing: 1978-05-08
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Granted: 1980-07-15
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Expires: 1998-05-08
Abstract
Abstract A wind energy conversion device comprised of an elongated generally cylindrical housing provided with oppositely pitched multi-bladed rotors at the fore and aft ends thereof which are directly coupled respectively to internal and external rotors of an electric generator. The device is pivotally mounted atop a mast in an off center relation to the fore and aft rotors, the pivot being positioned substantially closer to the front rotor. Electrical wiring conducts the energy produced by the generator to storage batteries which are connected to an inverter to produce an AC output. Appropriate ampere, DC and AC voltage gauges as well as a shut-off switch are included in the electrical system.
Inventors
- 👤 Endel Are
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:30
CPC Classifications
F; F03; F03D; F03D1/00; F03D1/02; F03D1/025; F03D9/00; F03D9/10; F03D9/11; F03D9/20; F03D9/25; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/72; Y02E70/00; Y02E70/30; Y10; Y10S; Y10S416/00; Y10S416/04
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
200 words
A wind energy conversion device to convert the wind energy to electrical energy comprising a main elongated generally horizontally disposed housing, a generator in said housing including inner and outer rotors, a front end multi-bladed propeller, journaled through a front end portion of said housing and being directly coupled to a first of said inner and outer rotors, said blades of said front end propeller being pitched in a first direction to rotate said first rotor in a first direction when said front propeller is exposed to and rotated by wind pressures; a rear end multi-bladed propeller, journaled through a rear end of said housing and being directly coupled to a second of said inner and outer rotors, said blades of said rear end propeller being pitched in a second direction to rotate said second rotor in a second direction, opposed to said first direction of said first rotor, when exposed to and rotated by the wind pressures; means to transmit electrical energy generated by said rotation of the first and second rotors of said generator to a remote location and means to support said housing at a predetermined elevation above ground level for proper exposure to prevailing wind forces.
Claim 2
Dependent Claim
200 words
A wind energy conversion device to convert the wind energy to electrical energy comprising a main elongated generally horizontally disposed housing, a generator in said housing including inner and outer rotors, a front end multi-bladed propeller, journaled through a front end portion of said housing and being directly coupled to a first of said inner and outer rotors, said blades of said front end propeller being pitched in a first direction to rotate said first rotor in a first direction when said front propeller is exposed to and rotated by wind pressures; a rear end multi-bladed propeller, journaled through a rear end of said housing and being directly coupled to a second of said inner and outer rotors, said blades of said rear end propeller being pitched in a second direction to rotate said second rotor in a second direction, opposed to said first direction of said first rotor, when exposed to and rotated by the wind pressures; means to transmit electrical energy generated by said rotation of the first and second rotors of said generator to a remote location and means to support said housing at a predetermined elevation above ground level for proper exposure to prevailing wind forces.
Claim 3
Dependent Claim
28 words
The device as defined in claim 1 wherein said blades of said front end propeller are pitched to produce a clockwise rotation thereof and of said first rotor.
Claim 4
Dependent Claim
15 words
The device as defined in claim 2 wherein said first rotor comprises said inner rotor.
Claim 5
Dependent Claim
28 words
The device as defined in claim 1 wherein said blades of said rear end propeller are pitched to produce a counterclockwise rotation thereof and of said second rotor.
Claim 6
Dependent Claim
15 words
The device as defined in claim 4 wherein said second rotor comprises said outer rotor.
Claim 7
Dependent Claim
49 words
The device as defined in claim 1 wherein said means to transmit includes a pair of slip rings fixed relative to said inner rotor and a pair of brushes fixed to said housing connecting respectively between said slip rings and positive and negative conductor leads to said remote location.
Claim 8
Dependent Claim
75 words
The device as defined in claim 6 wherein said means to support comprises a mast for fixed mounting relative to any appropriate support structure such as a house or building roof and including a female receptacle fixed to a bottom wall of said main housing for pivotal engagement of a top portion of said mast, and a plurality of guy cables connected and tensioned between an upper portion of said mast and the support structure.
Claim 9
Dependent Claim
42 words
The device as defined in claim 7 wherein said female receptacle is fixed to said bottom wall rearwardly of but adjacent to a front end of said main housing and substantially forwardly of a mid point of the length of said housing.
Claim 10
Dependent Claim
38 words
The device as defined in claim 7 wherein said mast is formed of an electric conductive metal tube and includes a slip ring on a top end thereof for engagement by a brush connected to said negative lead.
Claim 11
Dependent Claim
51 words
The device as defined in claim 1 wherein said main housing is of a predetermined length to define a predetermined spacing between said front and rear propellers to achieve a maximum aerodynamic efficiency of said rear propeller relative to said front propeller as determined by the lengths of said propeller blades.
Claim 12
Dependent Claim
32 words
The device as defined in claim 1 wherein each individual blade of said front and rear propellers is formed of lightweight synthetic fibers bonded together by an appropriate very tough plastic resin.
Claim 13
Dependent Claim
24 words
The device as defined in claim 6 including storage battery means at said remote location electrically connected to said positive and negative conductor leads.
Claim 14
Dependent Claim
22 words
The device as defined in claim 12 wherein said storage battery means comprises a battery pack of a plurality of storage batteries.
Claim 15
Dependent Claim
28 words
The device as defined in claim 12 including an inverter electrically connected to said storage battery means to convert the DC from the batteries to 120 V, AC.
Claim 16
Dependent Claim
25 words
The device as defined in claim 12 including a control panel including an ampere gauge connected in said positive conductor lead to said battery means.
Claim 17
Dependent Claim
24 words
The device as defined in claim 12 including a DC voltage gauge connected across said positive and negative conductor leads to said battery means.
Claim 18
Dependent Claim
23 words
The device as defined in claim 14 including an AC voltage gauge connected across 120 V, AC output conductor leads from said inverter.
Claim 19
Dependent Claim
25 words
The device as defined in claim 15 including an on-off switch in said positive conductor lead to said positive conductor lead to said ampere gauge.
Claim 20
Dependent Claim
182 words
A wind energy generator to convert wind energy to electrical energy comprising: a pair of generator rotor shafts, each shaft having an outer end zone and said shafts being aligned along a common centerline, an internal generator rotor fixed on one of said pair of shafts and an exterior generator rotor fixed on the other of said pair of shafts, said exterior rotor being arranged about said internal rotor, and said rotors comprising a generator means; and an elongate housing having opposite ends and each housing end having an opening about the common centerline; said housing including means journalling each of said shafts and fixed rotor for independent rotation of the rotors within said housing, and the outer end zone of each of said shafts extending within the housing in opposite directions and away from said rotors; means to mount a multi-blade propeller for rotation exteriorly of each of the opposite housing ends with the outer end zone of each of said shafts, and said housing including means to mount the housing aloft to a vertical support for exposure to wind forces.
Claim 21
Dependent Claim
182 words
A wind energy generator to convert wind energy to electrical energy comprising: a pair of generator rotor shafts, each shaft having an outer end zone and said shafts being aligned along a common centerline, an internal generator rotor fixed on one of said pair of shafts and an exterior generator rotor fixed on the other of said pair of shafts, said exterior rotor being arranged about said internal rotor, and said rotors comprising a generator means; and an elongate housing having opposite ends and each housing end having an opening about the common centerline; said housing including means journalling each of said shafts and fixed rotor for independent rotation of the rotors within said housing, and the outer end zone of each of said shafts extending within the housing in opposite directions and away from said rotors; means to mount a multi-blade propeller for rotation exteriorly of each of the opposite housing ends with the outer end zone of each of said shafts, and said housing including means to mount the housing aloft to a vertical support for exposure to wind forces.
Claim 22
Dependent Claim
55 words
The device as set forth in claim 19 wherein a multi-blade propeller is mounted for rotation on the outer end zone of each of said shafts and includes means mutually interconnecting with said means to mount, a multi-blade propeller; and each of said of multi-blade propellers are counter pitched for relative counter-rotation of the propellers.
Claim 23
Dependent Claim
32 words
The device as set forth in claim 20 wherein said opposite ends of said housing are spaced from one another a predetermined distance greater than the outside diameter of the multi-blade propellers.
Claim 24
Dependent Claim
27 words
The device as set forth in claim 20 wherein said propellers comprise lightweight synthetic fibers bonded together by a carrier of plastic resin in the rigid range.
Claim 25
Dependent Claim
29 words
The device as set forth in claim 20 wherein said means to mount the housing to a vertical support is adjacent one of said ends of said elongate housing.
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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) | 1983-07-15 | 1984-01-14 | 1984-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-15 | 1988-01-14 | 1988-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-15 | 1992-01-14 | 1992-07-15 | $7700.00 | Window Closed / Lapsed |