US 11,686,315 B2
Ceiling fan and impeller blade
Jeffrey Butler Cunnane, Phoenix, AZ (US)
Assigned to Hunter Fan Company, Memphis, TN (US)
Filed by HUNTER FAN COMPANY, Memphis, TN (US)
Filed on Aug. 11, 2020, as Appl. No. 16/989,999.
Prior Publication US 2022/0049707 A1, Feb. 17, 2022
Int. Cl. F04D 25/08 (2006.01); F04D 29/34 (2006.01); F04D 29/38 (2006.01); F21V 33/00 (2006.01)
CPC F04D 25/088 (2013.01) [F04D 29/34 (2013.01); F04D 29/388 (2013.01); F21V 33/0096 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A ceiling fan comprising:
a body having an outer periphery and a bottom, the body defining an annular air flow passage with an annular inlet in the bottom, and an annular outlet provided on the outer periphery of the body;
a motor having a rotor, defining a rotational axis, with at least a portion of the rotor located within the body;
an impeller mounted to the rotor to move air through the air flow passage;
an annular grill located radially exteriorly of the impeller and circumscribing the annular outlet such that air passing through the annular air flow passage and exiting the annular outlet passes through the grill; and
a set of blades provided on the impeller, the set of blades located within the annular air flow passage and circumferentially spaced about the annular air flow passage, with at least one blade of the set of blades extending from a root to a tip in a span-wise direction, and extending from a first edge to a second edge defining a chord-wise direction, wherein at least some tips of the blades include an extension extending outward at the tip.