Patent ID: 8543298

Claim:
An operator interface assembly for a machine, comprising: a base, an operator input device operable to move in a first direction in relation to the base to a second position and a third position, and operable to move in a second direction in relation to the base, the second direction opposite the first direction, to a fourth position and a fifth position, a first biasing member including a first spring end and a third spring end, and operatively associated with the base and wherein the first spring end is operable to contact the operator input device at the first position and resist movement of the operator input device in the first direction, and the third spring end is operable to contact the operator input device at the fourth position and resist movement of the operator input device in the second direction, a second biasing member including a second spring end and a fourth spring end, and operatively associated with the base and wherein the second spring end is operable to contact the operator input device at the second position and resist movement of the operator input device in the first direction, and the fourth spring end is operable to contact the operator device at the first position and resist movement of the operator input device in the second direction, and a position sensor configured to generate a position signal for generating a machine control command, the position signal indicative of the operator input device position, and wherein the first position, the second position, and the fourth position are different positions.