US Patent No: 8,109,061
Number of patents in Portfolio can not be more than 2000
Tower part for a wind turbine, an aperture cover system, a method for manufacturing a tower part and uses hereof
Stats
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Feb 7, 2012
Issued date -
Nov 10, 2004
filing date -
11/718,961
serial no -
In Force
status
Importance
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Abstract
A tower part for a wind turbine includes at least one wall segment and at least one aperture segment including at least one aperture. The wall segment and the aperture segment are connected and the aperture segment is of a substantially uniform thickness and is thicker than the thickness of the wall segment. The tower part further includes an aperture cover system for covering at least one aperture in a tower part for a wind turbine, including cover plates and attachments for attaching the system to the tower part, where the attachments do not affect the fatigue limit of the tower part.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 6,470,645 Method for making and erecting a wind tower | 29 | 2000 | |
| 6,532,700 Flange with cut for wind tower | 19 | 2000 | |
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| 6,357,549 Guide rail climbing lifting platform and method | 13 | 2000 | |
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| 4,590,718 Portable, adjustable structure and method of erecting same | 11 | 1984 | |
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| 5,513,477 Segmented, graded structural utility poles | 35 | 1995 | |
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| 2004/0172,881 Door system opening on both the left and right sides | 2 | 2003 | |
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| 2003/0147,753 Wind turbine tower suspension means | 10 | 2002 | |
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| 5,847,318 Hand hole reinforcement assembly | 5 | 1996 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Aug 7, 2015 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Aug 7, 2019 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Aug 7, 2023 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| 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 |