An electric fan heater includes a stationary housing and a louver blade assembly having a plurality of oscillating louver blades located forwardly in the housing for providing multidirectional hot air flow from the heater. The heater also includes a drive system for the louver blade assembly with the...http://www.google.com/patents/US4743737?utm_source=gb-gplus-sharePatent US4743737 - Oscillating louver electric fan heater
