Patent ID: 8794314

Claim:
Drill rod having at least two rod elements, which are connected to each other in a rotationally fixed and detachable manner, wherein the rod elements each have an inner pipe and an outer pipe, between which a ring-shaped receiving space is formed, the rod elements each have an energy and/or data line, which extends along a longitudinal axis of the drill rod, and the energy and/or data lines of the rod elements are each connected to an induction coil, wherein the induction coils can be coupled to each other inductively for energy and/or data transmission along the drill rod, wherein a first rod element has an inner induction coil located at an outer circumference of its inner pipe and a second rod element has an outer induction coil located at an inner circumference of its outer pipe and in that the induction coils are constructed segmentally of several ring segment parts and overlap at least in some areas in the radial direction.