US4449887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Horizontal axis windmill
Assignee: Individual
•
Filing: 1981-09-14
•
Granted: 1984-05-22
•
Expires: 2001-09-14
Abstract
Abstract A base frame supports a horizontal shaft having one or more wind driven members secured thereon. Each of the wind driven members includes a shaft of light-weight framing and plurality of elongated longitudinally extending light-weight vanes having wind engaging surfaces. The vanes have a wind driving position on one side of the shaft and a return position on the other, and light-weight wind deflectors disposed at the front of the frame protecting the return position of the vanes from the wind. The wind deflectors are angularly adjustable whereby the deflected wind flowing off the longitudinal edges thereof is selectively directed against the vane surfaces in their driving position. The shaft has an output for operating a selected driven apparatus such as a generator. The base frame is rotatably supported on a pivot for selected adjustment relative to the wind.
Inventors
- 👤 Ivan W. Mundhenke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:02
CPC Classifications
F; F03; F03D; F03D3/00; F03D3/06; F03D3/062; F03D3/066; F03D3/067; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/74
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
152 words
A windmill comprising a base frame having opposite ends and front and rear portions, horizontal shaft means supported on said frame, a wind driven member secured on said shaft means, said wind driven member including a plurality of elongated longitudinally extending vanes projecting radially from said shaft means and having wind engaging surfaces, said vanes comprising lightweight framing and being braced one with the other by tie lines, said vanes having a wind driving position on one side of said shaft means and having a return position on the other side of said shaft means, a wind deflecting member disposed at the front of said base frame protecting the return position of said vanes from the wind and having an upwardly disposed face surface terminating in top and bottom longitudinal edges, with said top edge positioned such that deflected wind is arranged to engage said wind driven member for driving the latter,
Claim 2
Dependent Claim
152 words
A windmill comprising a base frame having opposite ends and front and rear portions, horizontal shaft means supported on said frame, a wind driven member secured on said shaft means, said wind driven member including a plurality of elongated longitudinally extending vanes projecting radially from said shaft means and having wind engaging surfaces, said vanes comprising lightweight framing and being braced one with the other by tie lines, said vanes having a wind driving position on one side of said shaft means and having a return position on the other side of said shaft means, a wind deflecting member disposed at the front of said base frame protecting the return position of said vanes from the wind and having an upwardly disposed face surface terminating in top and bottom longitudinal edges, with said top edge positioned such that deflected wind is arranged to engage said wind driven member for driving the latter,
Claim 3
Dependent Claim
155 words
a transverse support on said base frame guiding said wind deflecting member adjacent the top edge of the latter in a pivoting slidable connection, drive means on said base frame supporting said wind deflecting member at the bottom thereof and arranged to move the bottom of said wind deflecting member toward or away from said wind driven member, said drive means being inclined upwardly in a direction toward said wind driven member, said drive means, upon moving the bottom edge of said wind deflecting member toward said wind driven member, causing the top edge of said wind deflecting member to pivot rearwardly on said transverse support and to move upwardly and away from said wind driven member, thus controlling the deflection of the wind and the exposure of said wind driven member to the wind by actuation of said drive means, and a pivotal blade extension on the upper end of said wind deflector means.
Claim 4
Dependent Claim
155 words
a transverse support on said base frame guiding said wind deflecting member adjacent the top edge of the latter in a pivoting slidable connection, drive means on said base frame supporting said wind deflecting member at the bottom thereof and arranged to move the bottom of said wind deflecting member toward or away from said wind driven member, said drive means being inclined upwardly in a direction toward said wind driven member, said drive means, upon moving the bottom edge of said wind deflecting member toward said wind driven member, causing the top edge of said wind deflecting member to pivot rearwardly on said transverse support and to move upwardly and away from said wind driven member, thus controlling the deflection of the wind and the exposure of said wind driven member to the wind by actuation of said drive means, and a pivotal blade extension on the upper end of said wind deflector means.
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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) | 1987-05-22 | 1987-11-21 | 1988-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-22 | 1991-11-21 | 1992-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-22 | 1995-11-21 | 1996-05-22 | $7700.00 | Window Closed / Lapsed |