DISTANCE STAY Russian patent published in 1998 - IPC

FIELD: securing parts in drilled holes. SUBSTANCE: distance stay tail-piece having fixture for securing part at its rear end and at least two sections at its front end. These sections have reduced area of cross section. Distance taper sections adjoin them. Device includes also distance bushes fitted on sections with reduced area of cross section. Each distance bush is provided with at least two grooves located radially and bent outside. Grooves have one or several holes made in their rigid zone. These holes are round in form; they form sharp toothed edge for engagement of grooves with walls of drilled hole. Diameters of sections of tail-piece with reduced area of cross section are different. EFFECT: easy driving of stay. 5 cl, 7 dwg