Ceiling fan and blade
AssigneeHunter Fan Company
InventorsCharles William Botkin, Bobby Neal Norwood
Life of this patent
Estimating the term…
Abstract
A ceiling fan blade moves air about a space, driven by the ceiling fan. The ceiling fan blade can include an upper surface and a lower surface spanning a root and a tip, and a leading edge and a trailing edge. The blade can include a first curved portion along the leading edge and a second curved portion along the trailing edge. The first and second curved portions can include convex upper surfaces and concave lower surfaces, with a flat portion spacing the first and second curved portions.
Claims27
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.
A blade for a ceiling fan extending span-wise between a root and a tip, and extending chord-wise between a leading edge and a trailing edge, the blade comprising:
- an upper surface,
- a lower surface spaced from the upper surface defining a blade thickness,
- a first curved portion defining the leading edge, including a first convex surface partially defining the upper surface, and a first concave surface partially defining the lower surface,
- a second curved portion defining the trailing edge, including a second convex surface partially defining the upper surface, and a second concave surface partially defining the lower surface, and
- a flat portion provided between and spacing the first curved portion and the second curved portion.
A method of forming a blade for a ceiling fan, the method comprising:
- forming a blade body including an upper surface, a lower surface, a root, a tip, a leading edge, and a trailing edge;
- wherein the blade body includes a first curved portion defining the leading edge defined by a first convex surface partially defining the upper surface and a first concave surface partially defining the lower surface, a second curved portion defining the trailing edge defined by a second convex surface partially defining the upper surface and a second concave surface partially defining the lower surface, and a flat portion spacing the first curved portion from the second curved portion.
Dependencies are inferred from the claim text.