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Electric tractor

  • US 4,662,472 A
  • Filed: 09/24/1984
  • Issued: 05/05/1987
  • Est. Priority Date: 09/24/1984
  • Status: Expired due to Fees
First Claim
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1. A battery-powered electric tractor comprising:

  • a frame;

    ground-engaging wheel means for supporting the frame for over-the-ground travel;

    storage battery means for storing electric energy;

    power-take-off means mounted on the frame for driving implements;

    first dedicated electric motor means mounted on the frame for driving only the ground-engaging wheel means and supplied with electric energy from the storage battery means;

    mechanical linkage means for transferring motion from the first electric motor means to the ground-engaging wheel means, the mechanical linkage means including transmission means for selecting one of a plurality of ratios between rotational speeds of the first motor means and the ground-engaging wheel means;

    second dedicated electric motor means mounted on the frame for driving only the power-take-off means and supplied with electric energy from the storage battery means;

    first electric control means for controlling the flow of electric energy from the storage means to the first motor means in response to operator controlled first transducer means; and

    overspeed means for preventing the flow of electric energy from the storage means to the motor means when the motor speed reaches an overspeed limit.

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