Patent ID: 7316280
Filing Date: 2008-01-08
Classification: E21B

Abstract:
1. A method for producing and widening ground bores or for the destructive replacement of buried pipelines with the aid of a boring device which is arranged in a starting excavation and has a boring rod comprising a plurality of sections, characterized by moving not all the boring device, but rather the rotary drive for the advancement or at least part thereof which includes the receiving part for the rod sections, out of its boring position in the starting excavation, introducing or removing a rod section by moving at least the rotary drive with a rod receiving part out of its boring position at the starting excavation into a position which allows a rod section to be introduced into the rod receiving part from outside the starting excavation, and moving the rotary drive for the advancement or at least a part thereof which includes the receiving part for the rod sections back into the boring position after a rod section has been introduced or removed.