| 摘要 |
FIELD: medicine, particularly, traumatology and orthopedics. SUBSTANCE: wrench has cylindrical projection positioned on side of arrangement of springy lugs in symmetry with collet axis. End surface of projection carries pins, form, sizes and location of which correspond to hollows in nut to be installed in hook. This end surface is restricting base surface for nut to be installed in wrench collet. Internal surface of collet lugs corresponding to external surface of nut installed turns into beveled surface in plane passing through the end surface. Wrench provides for catching, holding, driving-in and tightening of nut in hook. EFFECT: higher efficiency. 1 dwg |
