US4113408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wind generator system
Assignee: Individual
•
Filing: 1977-02-25
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Granted: 1978-09-12
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Expires: 1997-02-25
Abstract
Abstract A wind operated generator is disclosed herein having a stationary frame or base rotatably supporting at least four sets of pivotal blades intended to be driven by impinging wind currents. Each set of blades operate in unison for opening and closing air passageways between adjacent ones of the blades as the sets of blades rotate about a common vertical axis. A wind direction sensor is provided which moves into the direction of the wind and electro-mechanical or electrical interface networks operably couple the wind direction sensor to the respective sets of blades whereby the blades are responsive to wind direction so as to be properly feathered to propel the sets of blades. By employment of the interface network, those blades that are in position to actuate or rotate the windmill will receive the full force of the wind while other blades which are not in a position to accomplish the proper operation will be turned to permit passage of the wind thereby.
Inventors
- 👤 Frank R. Wurtz
- 👤 Thomas J. Hawkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:16
CPC Classifications
F; F03; F03D; F03D3/00; F03D3/06; F03D3/062; F03D3/066; F03D3/067; F03D3/068; F05; F05B; F05B2240/00; F05B2240/20; F05B2240/21; F05B2240/211; F05B2240/218; F05B2260/00; F05B2260/50; F05B2260/507; F05B2260/70; F05B2260/74; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/74
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
239 words
Windmill generator apparatus for converting natural wind forces into useful energy comprising the combination of: a stationary frame; a shaft having a vertical longitudinal axis rotatably carried on said stationary frame; at least four sets of blades outwardly extending from said rotatable shaft at approximately 90° angles with respect to each other; each of sets of blades having a plurality of blades pivotally mounted on said shaft so as to rotate therewith and pivot between an open position defining a multiplicity of air passageways therebetween and a closed position occupying said air passageways; wind direction sensing means moveably carried on and encased by said stationary frame and operably connected to said blades of said blade sets for actuating said blades between their open and closed position responsive to changes of oncoming wind direction; electro-mechanical means interconnecting said wind direction sensing means with said blades which includes: an electrical motor having a drive wheel and a rod connected to said wheel off-set from its center and said blades moveably connected to said rod at their ends opposite to the ends pivotally mounted on said shaft; said wind direction sensing means includes: a rotatable disk carried on said stationary frame; a wind vane attached to said disk and responsive to change of wind direction to rotate said disk accordngly; and electrical detection means responsive to rotation of said disk for selectively operating said blades between their respective open and closed positions.
Claim 2
Dependent Claim
239 words
Windmill generator apparatus for converting natural wind forces into useful energy comprising the combination of: a stationary frame; a shaft having a vertical longitudinal axis rotatably carried on said stationary frame; at least four sets of blades outwardly extending from said rotatable shaft at approximately 90° angles with respect to each other; each of sets of blades having a plurality of blades pivotally mounted on said shaft so as to rotate therewith and pivot between an open position defining a multiplicity of air passageways therebetween and a closed position occupying said air passageways; wind direction sensing means moveably carried on and encased by said stationary frame and operably connected to said blades of said blade sets for actuating said blades between their open and closed position responsive to changes of oncoming wind direction; electro-mechanical means interconnecting said wind direction sensing means with said blades which includes: an electrical motor having a drive wheel and a rod connected to said wheel off-set from its center and said blades moveably connected to said rod at their ends opposite to the ends pivotally mounted on said shaft; said wind direction sensing means includes: a rotatable disk carried on said stationary frame; a wind vane attached to said disk and responsive to change of wind direction to rotate said disk accordngly; and electrical detection means responsive to rotation of said disk for selectively operating said blades between their respective open and closed positions.
Claim 3
Dependent Claim
63 words
The invention as defined in claim 1 wherein said disk includes: a perimeter of reduced perimeter and diameter extending for 180° and an enlarged perimeter and diameter extending for the remaining 180° of said disk; said electrical detection means operable in response to the presence or non-presence of said reduced perimeter and enlarged perimeter to pivot selected ones of said blade sets accordingly.
Claim 4
Dependent Claim
58 words
The invention as defined in claim 2 wherein said detection means includes photo-electric means disposed on opposite sides of said disk wherein said enlarged perimeter interferes with light passage to transmit a signal to move said blades into the open position and permits passage of light to transmit another signal to move said blades into the closed position.
Claim 5
Dependent Claim
26 words
The invention as defined in claim 3 wherein said disk is attached to said wind vane whereby said disk and said wind vane rotate in unison.
Claim 6
Dependent Claim
46 words
The invention as defined in claim 2 wherein said detection means includes a set of contact closures selectively operated by rotation of said disk functioning as a timing device to open and close said passageways between said blades on selected ones of said sets of blades.
Claim 7
Dependent Claim
43 words
The invention as defined in claim 2 wherein said detection means is an electronic interface network operable between said rotating disk and said sets of blades to open and close said passageways between said blades on selected ones of said sets of blades.
Claim 8
Dependent Claim
38 words
The invention as defined in claim 6 wherein said electronic interface network includes a photo-electric sensing device operable to selectivity energize one of at least four electric motors operably coupled to respective ones of said sets of blades.
Claim 9
Dependent Claim
55 words
The invention as defined in claim 7 wherein said detection means further includes a vertically moveable rod eccentrically connected to a drive wheel operated by said motor; lost-motion linkage moveably connecting one end of each of said blades to said rod so as to open and close said passageways in response to said detection means.
References Cited (Backward Citations)
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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) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |