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
Focus detection device and imaging apparatus having the same
Moving structure and micro-mirror device using the same
Method for the hydrolysis of substituted formylamines into substituted amines
Non-serialized electronic product registration system and method of operating same
Message transfer apparatus, output method, and computer program product
Methods of prognosing a rheumatoid arthritis remission phenotype
Link establishment in a wireless communication environment
  Randomly Featured Patents
Compact waveguide load
Handheld vacuum with window
Shaft seal having integrated removal feature
Fittonia plant named `White Angel`
Flower pot cover
Ultrasonic flow nozzle cleaning apparatus
Process for preparing water dissipatable polyester and use thereof
Card connector
Setting a relative position of a radiation device and a patient
Glazing assembly comprising a substrate provided with a stack of thin layers for solar protection and/or thermal insulation