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Method and apparatus for an electric drive differential system

  • US 7,731,614 B2
  • Filed: 11/15/2002
  • Issued: 06/08/2010
  • Est. Priority Date: 04/29/2002
  • Status: Expired due to Fees
First Claim
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1. A differential assembly comprising;

  • an electrically operated input device;

    a first planetary assembly in direct driving engagement with said input device, said first planetary assembly directly driving a first output assembly;

    a second planetary assembly in direct driving engagement with said first planetary assembly, said second planetary assembly directly driving a second output assembly;

    wherein said input device, said first planetary assembly, and said second planetary assembly are drivingly connected in series, one after the other, to provide substantially the same torque to said first and second output assemblies,wherein said one of said first and second planetary assemblies includes a reduction ratio value one greater than the other of said first and said second planetary assemblies.

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