METHOD FOR MANUFACTURING OF ELECTRIC BRUSHES Russian patent published in 1997 - IPC

FIELD: electric engineering. SUBSTANCE: method involves production of upper part of electric brush from worn-down brush using mechanical separation of destroyed contact piece, and manufacturing of new contact piece from bar with response surface for engagement with upper part. Upper and contact part of brush are joined by means of gluing with special current-conducting compound. This results in possibility to eliminate use of powder compositions so that all preparatory operations include just mechanical separation of worn-down contact part and manufacturing of new contact part of electric brush. In addition copper wire for manufacturing of current lead of electric brush is not used and all operations of its casing in electric brush body. EFFECT: simplified operations, decreased cost. 3 cl, 1 dwg