Resources Contact Us Home
Tap hole drill for steelmaking vessel

Image Number 8 for United States Patent #5735647.

A drilling apparatus for drilling a worn and/or damaged tap hole refractory liner sleeve from a tap hole nozzle of an oxygen blown steelmaking vessel, the apparatus including an elongated, hollow boom structure with an elongated drill shaft rotatably disposed within the boom structure, motor means for rotating the drill shaft and moving it in both directions within the boom structure, and a clamp means at the outer end of the boom structure adapted to attach the outer end of the boom structure to the tap hole nozzle in an accurate, axially aligned position. A drill bit for use with the above drilling apparatus comprises a plurality of conventional rock drill bits attached to a base plate equally spaced in a pair of concentric circular arrangement around an axis of the base plate.

  Recently Added Patents
Spreading technique applied to broadband mobile communications by satelite relying on DVB-RCS
Method for the hydrolysis of substituted formylamines into substituted amines
Emulsions containing arylboronic acids and medical articles made therefrom
Low-coupling oxide media (LCOM)
.beta.-2 microglobulin as a biomarker for peripheral artery disease
Bull stationery tab
System and method for access of user accounts on remote servers
  Randomly Featured Patents
Rice cleaning machine
Substrate electron injection techniques for programming non-volatile charge storage memory cells
Magazine rack
Tool handle
Composition comprising at least one liquid fatty phase structured by at least one semi-crystalline polymer
Magnetic head slider having protrusion-compensated air bearing surface design
Seat rail for vehicles
Method and apparatus for bonding a printing plate to a flexible endless printing belt
Combination drain pump and grinding apparatus
Kink-free spiral-wound catheter