Patent ID: 8100656

Claim:
A fan apparatus for a cooking device, the fan apparatus comprising: an impeller wheel that is securable on a drive shaft of a rotary drive, the impeller wheel having a hub delimiting a bore for receiving therethrough a drive shaft of a rotary drive such that the hub of the impeller wheel has, in an installed position of the impeller wheel, a drive shaft of a rotary drive extending therethrough with a stop on the drive shaft of a rotary drive preventing movement of the impeller wheel along the drive shaft in one axial direction beyond a first predetermined axial location on the drive shaft; and means for exerting a radially inward force on the hub of the impeller, at least one of the hub and the means for exerting a radially inward force being securable to a drive shaft of a rotary drive to prevent movement of the impeller wheel along the drive shaft in an axial direction opposite to the one axial direction beyond a second predetermined axial location on the drive shaft.