Patent ID: 7083550

Claim:
A motor and inertia flywheel arrangement for fitness machine comprising: a motor, said motor having a front side, an output shaft, said output shaft having a front end extended out of said front side and a rear end, and a first fan affixed to the rear end of said output shaft; and an inertia flywheel mounted on a front end of said output shaft outside the front side of said motor for synchronous rotation with said output shaft, said inertia flywheel having a belt wheel fixedly connected thereto; wherein said inertia flywheel comprises a circular recess that receives the front side of said motor, said circular recess having a flat bottom wall facing the front side of said motor, a tapered peripheral wall spaced around the periphery of the front side of said motor, and a plurality of radial ribs protruded from said flat bottom wall and respectively connected to said tapered peripheral wall for inducing currents of air out of said motor upon rotation of said inertia flywheel with said motor.