Continuous and autonomous mowing system

  • US 5,444,965 A
  • Filed: 03/23/1993
  • Issued: 08/29/1995
  • Est. Priority Date: 09/24/1990
  • Status: Expired due to Term
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First Claim
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1. Autonomous lawn mower, with electric motors, comprising at least one driving wheel, a cutting system, an electronic operating and control system for operating and controlling said electric motors associated with said at least one driving wheel and said cutting system, a rechargeable battery and/or photovoltaic cells to supply energy for said electric motors and for said operating and control system, the total power utilized by said motors being less than 120 Watts and a microprocessor and means for detecting obstacles on, and/or limits of, a lawn surface being provided, said detecting means supplying relevant environmental information to said microprocessor;

  • an algorithm stored in the memory of the microprocessor, the electronic operating and control system operating the lawn mower according to the responses to obstacles on, and/or limits of, the aforesaid surface supplied by the detector means and the algorithm, the algorithm maintaining the mower continuously either in operation, or in state of waiting for sunshine or recharging the rechargeable battery, the operation depending upon the state of charge of the rechargeable battery and/or the sunshine.

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