A safety cut-off system prevents the running of a motor of a self-propelled lawn mower having left and right drive wheels, and forward and reverse gears. The safety cut-off system includes a first forward presence lever manipulatable, by an operator, between an ON state and an OFF state, wherein the...http://www.google.de/patents/US6105348?utm_source=gb-gplus-sharePatent US6105348 - Safety cut-off system for use in walk-behind power tool
Safety cut-off system for use in walk-behind power tool
