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
ASICs having programmable bypass of design faults
Magnetic detection of small entities
System for setting programmable parameters for an implantable hypertension treatment device
Arbitration circuit to arbitrate conflict between read/write command and scan command and display driver integrated circuit having the same
Composite high reflectivity layer
System and method for efficient resource management of a signal flow programmed digital signal processor code
Electronic system auto-mute control circuit and control method thereof
  Randomly Featured Patents
Method and a device for reproducing solid body vibrations for the prediction of fracture processes in solid bodies, particularly in the earth crust
Container with one-step closing
Printer and controlling method for printer
Devices for stretching polymer films
Polymeric composition in pellet form
Camera with parallax correcting function
Electronic data storage apparatus, system and method
Systems and methods of information transmission
Projection optical system, exposure apparatus, and device fabrication method
Data compression