Patent ID: 6939235

Claim:
Assembly of a drive shaft with the cutting head hub of a submersible granulator, which assembly comprises a connection hood that is attachable in a pivoting manner to the drive shaft, which hood displays at its outer end an outer threading for the cutting head hub to be screwed on by means of a corresponding inner threading, the drive shaft abutting the inner side of the connection hood with a spherical end, wherein the spherical end of the drive shaft is designed as a ball, wherein a contact pressure is applied to said spherical end of the drive shaft in a direction along the axis of said drive shaft, wherein a cogged crown having outer cogs is arranged at the cutting-head-side end of the drive shaft, wherein the connector hood has inner cogs that engage the outer cogs of said cogged crown, and the outer surface of each cog of said cogged crown is convexly curved.