US Patent 7490587 Portable handheld work apparatus

A portable handheld work apparatus has a drive motor as well as an adjusting element for controlling the drive motor. The work apparatus has at least one actuating element. A movement of the actuating element is transmitted to the adjusting element via a transmitting unit. A good operator control is achieved when at least one transmitting characteristic (49, 50; 89, 90; 309, 310) of the transmitting unit runs nonlinearly as a function of the actuating displacement (s) of the actuating element.