DISC Russian patent published in 2000 - IPC

FIELD: manufacture of discs, for example at making tools for metal working. SUBSTANCE: disc includes at least in one of its lengthwise sections, line of section boundary. At least portion of section boundary line is in the form of fragment or combination of fragments of oblique cone section of straight circular cone. EFFECT: enhanced effectiveness of fixation against self-unscrewing at placing, for example compound mass between disc body and pressure plates, effective use of friction adhesion with contact part (pressure plate), lowered compression effort for achieving elastic deformation of disc portions for preventing self- self-unscrewing of threaded joint of disc, improved balancing properties of disc of threaded joint of shaft providing accurate balancing due to possibility of changing disc thickness and its axial shift; enhanced certainty of determining disc manufacturer due to applying respective mark on disc body, for example on portion of boundary of disc lengthwise section. 20 cl, 8 dwg