DEVICE FOR TROWELING AND SMOOTHING OF SURFACES Russian patent published in 1997 - IPC

FIELD: construction finishing tools. SUBSTANCE: device has body, drive unit with shaft, and working member. Connected to drive unit shaft is carrier with levers which carry rollers. Connected to body and working member is endless string which is kept in contact with surface of rollers. Carrier can be made with levers uniformly located over circumference. Rollers can be made removable and of various diameters and fixed on levers at adjustable distance from roller axis to shaft axis. Pivotally connected to body by its one end is stop, and its other end is connected to working member for possible oscillation of working member in plane which is parallel to surface being treated. String can be connected with body and working member by means of rollers with possible adjustment of distance between lines of string at point of connection with body and working member. Drive unit shaft can have output end at opposite side of unit. Installed on shaft output end is additional carrier with levers. Attached to levers are rollers of similar or different diameters which are kept in contact with endless string. EFFECT: high efficiency. 5 cl, 8 dwg