Ceiling fan blade
AssigneeHunter Fan Company
InventorsBobby Neal Norwood, Charles William Botkin
Life of this patent
Estimating the term…
Abstract
A ceiling fan or blade thereof can include a fan motor for rotating the blade. The blade can include an airfoil body having an outer surface extending between a leading edge and a trailing edge, and a root and a tip. The blade can be separated into three distinct cross sections including a first cross section as a lifting cross section, a second cross section as a flat cross section, and a third cross section as a transition section between the first and second cross sections.
Claims20
A blade for a ceiling fan having a fan motor rotating at least one blade iron, the blade comprising:
- an airfoil body having an outer surface extending between a leading edge and a trailing edge to define a chord-wise direction, and separating the outer surface into an upper surface and a lower surface, and the outer surface extending between a root and a tip to define a span-wise direction;
- and
- a blade iron mount provided on the root;
- wherein the airfoil body comprises at least three distinct cross sections in the span-wise direction:
- a first cross section comprising a flat lower surface with a lifting cross section;
- a second cross section comprising the flat lower surface and a flat upper surface;
- and a third cross section located between and transitioning from the first to the second cross sections.
A ceiling fan assembly comprising:
- a motor including a rotatable rotor and a stationary stator, with the stator configured to drive the rotor;
- at least one blade coupled to the rotor and having an airfoil body including an outer surface extending between a leading edge and a trailing edge to define a chord-wise direction, and separating the outer surface into an upper surface and a lower surface, and the outer surface extending between a root and a tip to define a span-wise direction;
- wherein the airfoil body comprises at least three distinct cross sections in the span-wise direction:
- a first cross section comprising a airfoil cross section;
- a second cross section comprising a flat lower surface and a flat upper surface;
- and a third cross section located between and transitioning from the first to the second cross sections.
A blade for a ceiling fan comprising:
- an airfoil body having an outer surface extending between a leading edge and a trailing edge to define a chord-wise direction, and separating the outer surface into an upper surface and a lower surface, and the outer surface extending between a root and a tip to define a span-wise direction;
- wherein the airfoil body comprises at least three distinct cross sections along the span-wise direction:
- a first cross section comprising an airfoil cross section;
- a second cross section comprising a flat upper surface and a flat lower surface;
- and a third cross section located between and transitioning between the first cross section and the second cross section.
Dependencies are inferred from the claim text.