self propelled trolley with ac power 1-300 t
SE540001C2 – Self-propelling trolley assembly – Google Patents
Self-propelling trolley assembly (100), comprising a battery (156); at least one wheel (111,112) which is driven by an electric motor (151,152;1), which electric motor is powered by said battery; a rotation position or velocity sensor (9) arranged to sense a rotation position or rotation velocity of at least one trolley wheel (111,112); a user interface (153); and a control unit (150) arranged
1-300 t battery operated...
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