Patent ID: 9422802
Filing Date: 2016-08-23
CPC Classification: E21B

Claim Text:
1. An apparatus for use in combination with a drill string that is electrically conductive and extends from an inground distal end, that includes an inground tool, to a drill rig, said apparatus comprising: a group of electrical isolators; and a housing that defines a through passage along a length thereof and said housing is configured to support the electrical isolators surrounding the through passage to form an electrically isolating break in the drill string such that, responsive to the drill rig pushing on the drill string and responsive to the drill rig pulling on the drill string, each isolator of the group of isolators is subject to no more than a compressive force and the housing defines a housing cavity to receive an electronics package having a signal port and configured for electrical connection of the signal port across the electrically isolating break.