Uptower wind turbine component replacement

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9909559
SERIAL NO

14507429

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A method for performing uptower maintenance of a wind turbine in order to replace the main bearing on the turbine shaft is disclosed. Embodiments of this method to perform maintenance may include installing a rotor lock to resist rotation of the main shaft during maintenance, providing a lifting device in order to elevate the main shaft, removing the main bearing from its main bearing housing, and installing a replacement split main bearing. A crane may also be installed uptower to assist in the maintenance.

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Patent Owner(s)

Patent OwnerAddress
INVENTUS HOLDINGS LLC700 UNIVERSE BOULEVARD JUNO BEACH FL 33408

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Asheim, Charles Palm Beach Gardens, US 4 18
Brake, Daniel M Hobe Sound, US 17 91
Fenger, Per Eske Terndrup, DK 15 27
Gonzalez, Miguel A Jupiter, US 12 119
Lohan, Martin E Palm City, US 9 47

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Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 Sep 6, 2025
11.5 Year Payment $7400.00 $3700.00 $1850.00 Sep 6, 2029
Fee Large entity fee small entity fee micro entity fee
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