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Hybrid mechanical and electrical drive and engine cooling fan arrangement

  • US 4,441,462 A
  • Filed: 07/28/1982
  • Issued: 04/10/1984
  • Est. Priority Date: 07/28/1982
  • Status: Expired due to Fees
First Claim
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1. An automotive engine cooling fan and drive assembly for maintaining airflow through a radiator in which coolant from an associated internal combustion engine is circulated comprising a support, primary motor means comprising an electric motor mounted on said support having a rotatable output, a bladed fan directly supported by said output and directly rotatably driven thereby for inducing the flow of air through said radiator, auxiliary fan drive means having an output drivingly connected to said bladed fan for the rotatable drive thereof, control means interposed in said auxiliary drive means establishing a first condition of operation in which said primary motor means powers said fan and a second condition of operation in which said auxiliary fan drive powers said fan.

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