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Transmission element for downhole drilling components

  • US 20050001738A1
  • Filed: 07/02/2003
  • Published: 01/06/2005
  • Est. Priority Date: 07/02/2003
  • Status: Abandoned Application
First Claim
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1. A transmission element for transmitting information between downhole tools located on a drill string, the transmission element comprising:

  • an annular core constructed of a magnetically-conductive material;

    at least one conductor coiled around the annular core and electrically isolated therefrom;

    an annular housing constructed of an electrically conductive material and partially enclosing the annular core and the at least one conductor;

    the annular housing further shaped to reside with an annular recess formed into a surface of a downhole tool, and being electrically insulated from the surface thereof;

    a biasing member to effect a bias between the annular housing and the annular recess, urging the annular housing in a direction substantially perpendicular to the surface.

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