Patent ID: 6544015
Filing Date: 2003-04-08
Classification: B21C,F04C

Abstract:
Rotor (4) for an eccentric screw pump (1) or an eccentric screw motor (51), which pump or motor has a stator (3) having a continuous interior space (12), into which strips project radially and in which the rotor (4) is arranged, having an essentially cylindrical core element (21), having an outer shell (22) which forms a helically formed outer surface (29) and surrounds the core element (21) essentially over its entire length, and the outer surface of which has thread valleys (34) and thread crests (33), the shell (22) being connected to the core element (21) by a cylindrical tube which forms the shell (22), being formed by shaping it into a helical tube until the shell bears with its inner circumferential surface in the region of the thread valleys against the core element and being frictionally connected to the core element (21) in the region of at least one thread valley, and having a coupling head (23) which is connected to the rotor (4) in a rotationally locked manner.