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US 2023/0144453 A1Published application
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 driven by a ceiling fan having a fan motor, the blade comprising:
- a body extending between a leading edge and a trailing edge to define a chord-wise direction, and extending between a root and a tip to define a span-wise direction, with the body including an upper surface and a lower surface;
- wherein the body comprises at least three distinct cross sections including a first cross section having a concave lower surface with an 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:
- a body including an upper surface and a lower surface, wherein the body comprises a first cross section with a concave lower surface with an airfoil cross section, a second cross section with a flat lower surface, and a third cross section located between and transitioning from the first to the second cross sections.
Dependencies are inferred from the claim text.