Patent ID: 9388789
Filing Date: 2016-07-12
CPC Classification: F03D,F05B,Y02E,Y02P,Y10T

Claim Text:
1. A sectional blade for a wind turbine, the blade comprising at least a first blade section and a second blade section extending in opposite directions from a blade joint, wherein each blade section comprises a spar section forming a structural member of the blade and extending in the longitudinal direction of the blade, the first and second blade sections being connected by a fastener arranged to restrain movement of the first blade section relative to the second blade section in the longitudinal direction of the blade, the first blade section and the second blade section being structurally connected by a spar bridge protruding from one of the blade sections and terminating axially in an end portion which is received in the spar section of the other blade section, the spar bridge and the spar section having interlocking shapes by which rotation of the spar bridge in the spar section is prevented thereby preventing rotation of one of the blade sections relative to the other blade section, the spar section of the other blade section comprising a receiving section extending from the blade joint and inwards into the spar section of that blade, and the receiving section holding the spar bridge such that movement of the end portion of the spar bridge relative to the receiving section is enabled in the longitudinal direction.