EMBEDDED UNIT OF CONCRETE TIE Russian patent published in 1998 - IPC

FIELD: railroad track, in particular, devices for fastening of rails to concrete ties. SUBSTANCE: unit has embedded thrust member rigidly fastened to tie in zone of hole for engagement with fastening member and tetrahedral hollow insert rigidly attached above embedded thrust member in hole and following its contour. End face of insert facing the embedded thrust member touches it and follows shape of its upper surface. Insert may be made in the form of truncated pyramid whose two opposite sides are made in the form of trapezium while the other two sides, in the form of rectangular. Large sizes of trapezium are facing the embedded thrust member. EFFECT: higher adaptability to manufacture. 2 cl, 2 dwg