Patent ID: 6183221
Filing Date: 2001-02-06
Classification: F04D

Abstract:
A heat dissipation fan with a shaft positioned to prevent chafing between the fan blade and the bearing comprising:a fan blade including a shaft extending therefrom, said shaft having a neck formed near the free end thereof;a self-lubricating bearing containing a hole therein to allow said shaft of said fan blade to penetrate therethrough;a locking plate seated in said neck of said shaft after penetrating said hole of said self-lubricating bearing and containing a through-hole and multiple slits to communicate with said through-hole;a casing having a collar extending therefrom, said collar containing a recess securely to receive said self-lubricating bearing therein and an internal shoulder in said recess to support said locking plate and said self-lubricating bearing, said recess having a bottom portion and a washer received in said bottom portion of said recess and abutting said free end of said shaft, said washer positioned to prevent chafing between said fan blade and said self-lubricating bearing; anda stator with an electrical circuit plate around said collar of said casing.