US 11,867,189 B2
Ceiling fan system with brushless motor
Richard A Oleson, Lexington, KY (US); J. Carey Smith, Lexington, KY (US); Richard W. Fizer, Lexington, KY (US); Richard M. Aynsley, Doonan (AU); and Elios Klemo, Wilmington, NC (US)
Assigned to DELTA T, LLC, Lexington, KY (US)
Filed by DELTA T, LLC, Lexington, KY (US)
Filed on Mar. 1, 2022, as Appl. No. 17/683,935.
Application 15/284,127 is a division of application No. 13/942,164, filed on Jul. 15, 2013, granted, now 9,458,859.
Application 13/942,164 is a division of application No. 12/399,428, filed on Mar. 6, 2009, granted, now 8,672,649.
Application 17/683,935 is a continuation of application No. 17/187,746, filed on Feb. 27, 2021, granted, now 11,268,528.
Application 17/187,746 is a continuation of application No. 15/284,127, filed on Oct. 3, 2016, granted, now 11,598,343.
Application 12/399,428 is a continuation in part of application No. 12/249,086, filed on Oct. 10, 2008, granted, now 8,147,182.
Claims priority of provisional application 61/034,254, filed on Mar. 6, 2008.
Claims priority of provisional application 60/978,860, filed on Oct. 10, 2007.
Prior Publication US 2022/0186738 A1, Jun. 16, 2022
Int. Cl. F04D 25/08 (2006.01); F04D 29/64 (2006.01); F04D 27/00 (2006.01); F04D 29/34 (2006.01); F04D 29/38 (2006.01); F04D 29/60 (2006.01); F24F 11/77 (2018.01); F04D 25/06 (2006.01); F04D 29/32 (2006.01); F04D 29/58 (2006.01); F24F 11/52 (2018.01)
CPC F04D 25/088 (2013.01) [F04D 25/068 (2013.01); F04D 27/004 (2013.01); F04D 27/008 (2013.01); F04D 29/329 (2013.01); F04D 29/34 (2013.01); F04D 29/384 (2013.01); F04D 29/5806 (2013.01); F04D 29/601 (2013.01); F04D 29/646 (2013.01); F24F 11/77 (2018.01); F24F 11/52 (2018.01)] 5 Claims
OG exemplary drawing
 
1. A fan system, wherein the fan system comprises:
(a) a ceiling fan including a hub, a plurality of fan blades mounted to the hub, and a motor operable to rotate the hub;
(b) a motor controller configured to control operation of the motor; and
(c) a plurality of sensors configured to sense a plurality of parameters associated with operation of the fan system, wherein the plurality of sensors are in communication with the motor controller, wherein the motor controller is configured to stop rotation of the hub in response to a value communicated from one or more of the plurality of sensors exceeding a predetermined threshold value, wherein the predetermined threshold value is representative of an occurrence of a condition external of the fan system;
wherein at least one of the plurality of sensors comprises at least one accelerometer in communication with the motor controller, wherein the at least one accelerometer is configured to sense an imbalance condition associated with operation of the ceiling fan, wherein the motor controller is configured to adjust a speed of the motor in response to the occurrence of the imbalance condition.