Patent ID: 6398526
Filing Date: 2002-06-04
Classification: F04D,F05D

Abstract:
A fan comprising a blade set, a rotary shaft, and a fan seat, the seat having a hollow post, the hollow post having a coil supported by the hollow post and a bearing positioned within the hollow post;wherein the coil generates a magnetic force to push a magnet within the blade set so that the fan is operated, wherein the blade set includes a cap and a retaining portion extending from the cap, wherein the rotary shaft includes a passage, is made of ceramic material, and is inserted into the bearing, wherein the retaining portion of the blade set extends from the cap through the passage in the rotary shaft, and wherein the rotary shaft is secured to the rotary shaft and retained within the bearing by a free end of the retaining portion extending through the passage in the rotary shaft to prevent the blade set, the rotary shaft, and the bearing from separating.