US 12,071,922 B2
Wind turbine blade assembly and methods
Josep Bosch-Collado, Barcelona (ES); Przemyslaw Skierczynski, Warsaw (PL); and Javier Bescos Grillo, Barcelona (ES)
Assigned to General Electric Renovables Espana, S.L., Barcelona (ES)
Filed by General Electric Renovables Espana, S.L., Barcelona (ES)
Filed on Jul. 12, 2023, as Appl. No. 18/350,804.
Application 18/350,804 is a division of application No. 17/741,772, filed on May 11, 2022, granted, now 11,732,685.
Claims priority of application No. 21382629 (EP), filed on Jul. 12, 2021.
Prior Publication US 2023/0366371 A1, Nov. 16, 2023
Int. Cl. F03D 1/06 (2006.01)
CPC F03D 1/0658 (2013.01) [F05B 2260/301 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A wind turbine blade assembly, comprising:
a blade with a blade root portion;
a blade root flange comprising a through hole;
a plurality of receptacles embedded in the blade root portion, the plurality of receptacles configured to receive hub fasteners to couple the blade root portion to a rotor hub, the plurality of receptacles comprising, at least, a first receptacle, the hub fasteners comprising, at least, a threaded hub fastener comprising a first thread matching a first inner thread of the first receptacle, a central section of the same diameter as the first thread, and two consecutive sections of a greater diameter than the central section,
wherein the blade root flange is coupled to the blade root portion through the plurality of receptacles, and
wherein the threaded fastener comprises a head that exerts pressure on the blade root flange when the threaded hub fastener is coupled to first receptacle.