作者: Hans A. Rass
DOI:
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摘要: A lawn mower, designed with a set of built-in mechanical sensor and piloting mechanisms, which enable it to pilot itself along the edge line between grass already cut not yet cut, in fairly straight course, then reverse its direction at end run, move sideways towards uncut proceed another run. The mower will an area where there is no grass, obstacle path it. drive wheels are driven by planetary gear mechanism coupled both motor rotatable brushes mounted ahead so that transmits power only when encounter resistance, such as from wheels. on guide frame pivotally wheel engage first two counter-rotating gears linked Forward impact against causes rock second travel mower. formed individual rim segments, each spoke hub wheel, spring bias latching spokes vertical plane except during periods pivotal rocking motion frame. When rocks shift unlatched permit weight assembly cause pivot for timed period causing sidewise duration period.