Patent ID: 11873834
Assignee: LG ELECTRONICS INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 14:
15. The ceiling fan of claim 13, wherein the first inner blade comprises:
a first inner negative pressure surface defining a surface intersecting the axial direction; and
a first inner positive pressure surface which defines a surface intersecting the axial direction and is located below the first inner negative pressure surface,
wherein the outer blade comprises:
an outer negative pressure surface defining a surface intersecting the axial direction; and
an outer positive pressure surface which defines a surface intersecting the axial direction and is located below the outer negative pressure surface,
wherein the first inner negative pressure surface and the outer negative pressure surface are connected as one surface, and the first inner positive pressure surface and the outer positive pressure surface are connected as one surface.