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Working machine

  • US 20050019173A1
  • Filed: 07/07/2004
  • Published: 01/27/2005
  • Est. Priority Date: 07/22/2003
  • Status: Active Grant
First Claim
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1. A working machine employing both an internal combustion engine and an electric motor, said working machine comprising:

  • a machine body;

    a working unit attached to said machine body;

    said internal combustion engine for driving said working unit;

    a traveling unit comprising a crawler or traveling wheel for causing said machine to travel;

    said electric motor for driving said traveling unit;

    a power generator drivable by said internal combustion engine to supply electric power to a battery and said electric motor; and

    a control unit for controlling rotation of said electric motor, wherein said control unit performs control to shift said working apparatus to a battery mode so that said electric motor is rotated by only electric power supplied by the battery with said internal combustion engine kept deactivated.

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