Patent ID: 6227320
Filing Date: 2001-05-08
Classification: B62D

Abstract:
A follower industrial truck comprising:a drive motor (10);a handle lever (22, 22a, 22b) having first and second ends, the first end being connected to a steering base of the industrial truck, the steering base being pivotally mounted about a vertical axis of the steering base;a handle lever head (26, 26a, 26b) which is movably mounted to the second end of the handle lever in a pull and push manner;a spring arrangement between the handle lever and the head, which biases the head in opposite directions towards a neutral position;a path sensor (28, 44) which in dependency on the deflection of the head (26, 26a, 26b) from its neutral position produces a path signal (S.sub.ist), the magnitude of the path signal (S.sub.ist) being approximately proportional to the extent of the deflection;a first controller (46) which compares the path signal (S.sub.ist) with a nominal value (S.sub.soll) which produces a first nominal value (I.sub.soll) for the current of the drive motor, anda current controller (48) adapted to receive a comparison current value which is achieved by the comparison of an actual current value (I.sub.ist) of the drive motor and of the first nominal value (I.sub.soll) from the first controller (46) in order to produce a setting current value for the drive motor.