Patent ID: 8191628

Claim:
A borehole assembly system comprising: an instrument sub comprising at least one sensor; an electronics sub comprising an electronics sonde having a downhole telemetry unit disposed therein; a mud motor disposed between said instrument sub and said electronics sub; and a conductor disposed in said mud motor with a lower terminus electrically connected to said instrument sub and an upper terminus electrically connected to a link disposed between said mud motor and said electronics sonde, wherein said instrument sub is rotatable with respect to said electronics sub; and said link provides operational coupling between said instrument sub and said electronics sonde; and wherein said link comprises: an upper magnetic dipole; and a lower magnetic dipole rotatable with respect to said upper magnetic dipole; wherein the upper magnetic dipole and the lower magnetic dipole each comprise a ferrite element surrounding a steel mandrel with wires wound around the circumference of the ferrite element and said upper and lower magnetic dipoles provide said operational coupling by magnetic coupling.