AIRFOIL FOR ENERGY EXTRACTING SHROUDED FLUID TURBINES
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United States of America Patent
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Issued Date -
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app pub date -
Sep 16, 2011
filing date -
Sep 16, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Example embodiments described herein relate an integral and/or multi-piece airfoil and a shrouded fluid turbine having the same. The airfoil can have a generally circumferential body extending circumferentially about a central axis, and can be referred to herein as a “ringed airfoil.” The airfoil can have a front portion defining a leading edge of the airfoil and a rear portion defining a trailing edge of the air foil. A cross-sectional thickness of the front portion can be non-uniform and vary along a mean camber line of the airfoil from the leading edge to a transition area. A cross-sectional thickness of the rear portion can be uniform and constant along the mean camber line of the airfoil from the transition area to the trailing edge of the airfoil.

First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
FLODESIGN WIND TURBINE CORP | 221 CRESCENT STREET SUITE 103A WALTHAM MA 02453 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Dold, Robert H | Monson, US | 36 | 183 |
Dumlupinar, Ercan | Palmer, US | 17 | 109 |
Kennedy,, III Thomas J | Wilbraham, US | 146 | 1820 |
Presz,, JR Walter M | Wilbraham, US | 127 | 1812 |
Werle, Michael J | West Hartford, US | 77 | 1041 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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