Patent ID: 8151697

Claim:
A self-cleaning rotisserie oven, comprising: a cooking cabinet comprising an internal bottom wall, an internal top wall and internal side walls thereby defining a cooking chamber; a self-cleaning system for cleaning the cooking chamber; and a convection system including a heating element and ventilation system configured to heat the cooking chamber, the ventilation system including: a motor; a fan including a fan shaft having a first end connected to the motor and a protruding end connected to the fan such that the motor drives the fan; and a bushing including a central channel that receives the fan shaft, the central channel including an inner surface having a variable inner diameter along an axial length of the bushing such that a first portion of the inner surface is near the fan shaft and a second portion of the inner surface is spaced apart from and further from the fan shaft than the first portion, the second portion positioned toward the protruding end of the fan shaft and the first portion positioned toward the first end.