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Tandem fan for motor-vehicle radiators

  • US 5,826,549 A
  • Filed: 11/14/1996
  • Issued: 10/27/1998
  • Est. Priority Date: 12/06/1995
  • Status: Expired due to Term
First Claim
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1. A tandem fan for a radiator of a motor driven vehicle, comprising:

  • two fan impellers having respective belt pulleys, said fan impellers having respective axes of rotation arranged parallel to one another, and the respective belt pulleys being coupled to one another by a common belt;

    an electric motor for driving said common belt;

    a fluid friction clutch for driving one of the two fan impellers, the fluid friction clutch being driven via a first overrunning clutch by the vehicle motor; and

    a second overrunning clutch arranged between the electric motor and its respective belt pulley;

    wherein electric motor is coaxial with one of the two fan impellers and wherein the other fan impeller is coaxial with the fluid friction clutch.

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