The invention relates to an automatic, self-contained machine for continuously mowing grass. The machine is powered by means of photovoltaic cells (10) and can be wheeled (15) or tracked. A device comprising a microcomputer programmed by an algorithm allows to search for spots where the grass must be...http://www.google.se/patents/US5444965?utm_source=gb-gplus-sharePatent US5444965 - Continuous and autonomous mowing system
