Cylinder, has core divided on its length in one or several times so that core parts have one or more core spikes or panel bolts, where spikes are displaced by accessing two core halves in one of two borings with one another

摘要

The cylinder has a core divided on its length in one or several times so that core parts have one or more core spikes or panel bolts. The core spikes have spike bolts pre-stressed by springs with recesses arranged in a housing for guiding the springs. The spikes are displaced by accessing two core halves in one of two borings with one another. The spikes are pushed against spring pressure on a shearing surface.