ELECTRICAL MACHINE CURRENT COLLECTING DEVICE Russian patent published in 2002 - IPC

FIELD: electrical engineering. SUBSTANCE: device has longitudinally split brush contacting the commutator whose effective surface is rough; commutator-to-brush clearance and split joint of brush are filled with lubricating material incorporating conducting powder its amount being 2- 15% of lubricating material volume. Vertical electricity conducting filaments are introduced in addition into lubricating material placed in split joint of brush. EFFECT: enhanced reliability of current collection due to improved quality of wiping contact and reduced arcing. 1 dwg