SMOOTHING TOOL Russian patent published in 1998 - IPC

FIELD: construction industry, applicable for qualitative facing of non-hardened concrete surfaces with production of roughness of the required class on the face surface of reinforced- concrete products for construction and industrial engineering, moulded of stiff concrete mixes. SUBSTANCE: qualitative facing of surface is attained due to the fact that the tool executes a combined rotary-oscillatory motion, which is accomplished due to the passage of an elastic wave through a flexible hose placed between the disk plates and vulcanized on one end; the flexible hose through a pipeline is connected to a plunger installed on a cylindrical housing and set in motion by the cam of the drive shaft, and the lower and middle plates are interconnected by means of a ball bearing; the lower plate is attached to the drive shaft by means of a spider and two bushes. EFFECT: enhanced quality of surface facing and reducing power intensity of the process. 2 dwg