A clothes dryer has a first four pole motor that rotates a rotatable drum in the dryer through a transmission system. The clothes dryer has a second two pole self speed regulated induction motor connected to a blower fan in the air passageway of the dryer. The second motor rotates the fan to draw air...http://www.google.es/patents/US6874250?utm_source=gb-gplus-sharePatente US6874250 - Clothes dryer
