Patent ID: 11873791
Assignee: ENVISION ENERGY CO., LTD
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. A material core for a wind turbine blade, comprising:
a core body;
a first groove, extending from a first side of the core body, in a first direction, into a depth d1 in the core body; and
a second groove, extending from a second side of the core body facing away from the first side, in a direction opposite to the first direction, into a depth d2 in the core body, wherein the second groove is parallel to the first groove, and wherein:

d2=t−d1+x, 

1 mm≤c≤d1,

wherein t is a thickness of the core body and a distance between the first and second grooves is o, wherein:

1 mm≤o≤5 mm.