Drilling system drive steel

  • US 6,161,635 A
  • Filed: 03/01/1999
  • Issued: 12/19/2000
  • Est. Priority Date: 06/07/1995
  • Status: Expired due to Term
First Claim
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1. In combination with a drive steel member adapted for releasable connection with a drilling machine chuck of a rotary drilling system, and which drive steel member is internally ported for the passage of drilling fluids;

  • the improvement of chuck shank means constructed and arranged to form a permanent chuck adapter on one end of the drive steel member, said chuck adapter comprising a main body section and an internally ported chuck seating section, internal means in said main body section sealably receiving said one drive steel member end, and fastening means for rigidly securing said drive steel member within said main body section.

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