Patent ID: 6213617
Filing Date: 2001-04-10
Classification: F04D,G09F,Y10S

Abstract:
Apparatus associated with a fan for illuminating indicia associated with at least one fan blade, the apparatus comprising:at least one strobe light unit associated with the fan, said strobe light unit being positioned and located so as to direct light onto the at least one fan blade at a particular location during the rotational motion of the fan blade;an emitter associated with the fan, said emitter being operable to emit a signal therefrom;a sensor positioned to sense the rotational motion of said at least one fan blade based upon the signal emitted by said emitter; anda controller coupled to said sensor and to said at least one strobe light unit, said controller being operable to control the operation of said at least one strobe light unit based upon signals received from said sensor, said at least one strobe light unit being synchronized with the rotation of the at least one fan blade such that indicia associated with the at least one fan blade appears to be statically still at a particular location during the rotational motion of the at least one fan blade.