Back to results
US 4,164,690 AGranted
Compact miniature fan
OwnerRolf Muller, Gunter Wrobelinventors
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
OwnerRolf Muller, Gunter Wrobelinventors
Estimating the term…
A compact miniature fan has an air-guidance housing of rectangular parallelepiped configuration. The housing has two opposite end walls and side walls. One end wall is provided with an air inflow opening. One side wall is provided with an air outflow opening. The other end wall comprises a base plate. Mounted within the housing is an electric motor of flat overall shape. The stator and rotor of the motor define a planar air gap. The stator includes a magnetically conductive flux-return structure mounted on the base plate and a stator winding comprised of a plurality of flat coils mounted on the flux-return structure. The rotation axis of the rotor extends in the direction from one to the other of the end walls of the air-guidance housing. A radial fan wheel is provided within the housing, mounted on and coaxial with the rotor of the motor.
A compact miniature fan, comprising an air-guidance housing of rectangular parallelepiped configuration having two opposite end walls and side walls, one of the end walls being provided with an air inflow-opening, one of the side walls being provided with an air outflow opening, the other of the end walls being comprised of a base plate;
Dependencies are inferred from the claim text.