Patent ID: 11892008
Assignee: HUNTER FAN COMPANY
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A ceiling fan comprising:
a motor; and
a blade rotatably driven by the motor, the blade defining a longitudinal axis extending between a root and a tip and defining a span-wise direction therebetween, and extending between a leading edge and a trailing edge defining a chord-wise direction therebetween, the blade including a blade body comprising:
an upper surface,
a lower surface spaced from the upper surface defining a blade thickness,
a first curved portion, including a first convex surface partially defining the upper surface, and a first concave surface partially defining the lower surface, with the first curved portion defining the leading edge,
a second curved portion, including a second convex surface partially defining the upper surface, and a second concave surface partially defining the lower surface, with the second curved portion defining the trailing edge, and
a flat portion extending between and spacing the first curved portion and the second curved portion;

wherein a first curvature defining the first convex surface is the same as a second curvature defining the second convex surface, and a third curvature defining the first concave surface is the same as a fourth curvature defining the second concave surface, such that the body is symmetric along the longitudinal axis.